Photo of Robert Rioux

Robert Rioux

Friedrich G. Helfferich Professor of Chemical Engineering

Affiliation(s):

  • Chemical Engineering

22A Chemical and Biomedical Engineering Building

rmr189@psu.edu

814-867-2503

Personal or Departmental Website

Google Scholar Profile

Research Areas:

Energy and Environment; Interfaces and Surfaces

Interest Areas:

Chemical Catalysts: Heterogeneous catalysis, catalyst design and synthesis, time-resolved FTIR spectroscopy of condensed systems, x-ray absorption spectroscopy (EXAFS, XANES), reaction mechanisms in nanoscale systems, photocatalysis.

 
 

 

Education

Publications

Books

  • Robert M Rioux, 2010, Model Systems in Catalysis: Single Crystals to Supported Enzyme Mimics, Springer, pp. 526

Book Reviews

  • Robert M Rioux, 2009, Design of Heterogeneous Catalysts: New Approaches based on Synthesis, Characterization and Modeling, pp. p. 6196

Journal Articles

  • Robert M Rioux, Mustafa Eid, Jin Li, Nilanjan Roy, Kathryn MacIntosh and Michael J Janik, 2026, "Facet Preferencing by Chemical Substitution Controls Semi-Hydrogenation Selectivity in Ternary Pyrite-Type Intermetallic Compounds", ACS Catalysis, 16, (3), pp. 9
  • Robert M Rioux, 2026, "The Ever-Evolving Active Site: Transformation of Single Atoms to Extended Structures during Rh-catalyzed Reverse Water-Gas Shift Reaction", Faraday Discussions
  • Robert M Rioux, Prawal Agarwal and, Themis Matsoukas , 2026, "Plasma-enhanced chemical vapor deposited oleic acid films on Al nanoparticles (n-Al) demonstrate superior energetic performance than Graphene Oxide-n-Al mechanical mixtures", Applied Surface Science
  • Robert M Rioux, Xiaobo Chen, Yonghyuk Lee, Seunghwa Hong, Emily Schroeder, Sabrina M Gericke, Greg D Barber, Zhihengyu Chen, Sarah Hesse, Christopher J Tassone, Phillip Christopher, Simon R Bare, Meng Li, Dmitri N Zakharov, Anastassia N Alexandrova, Ashley R Head, Guanghwen Zhou and Judith C Yang, 2025, "Defect-Driven Redox Interplay on Anatase TiO2: Surface-Structure Dependent Activation for CO2 Hydrogenation Catalysis", Journal of the American Chemical Society, 147, (47), pp. 12
  • Robert M Rioux, Nilanjan Roy, Sandip Kuila, Mustafa Eid, Kathryn MacIntosh, Parna Pramanik, Thomas Proffen, Michael J Janik and Partha Pratim Jana, 2025, "Solving the ‘Coloring Problem’ in InPd3-xAgx (x = 0-0.7) by CALculation of PHAse Diagrams Modeling and Diffraction Experiments", Inorganic Chemistry, 64, (48), pp. 10
  • Robert M Rioux, Mazal Kostan-Carmiel, Hadar Shema, Hsien-Cheng Yu, Griffin Canning, Dina Shpasser, Akshay Soni, Sergei Remennik, Neal Mankad, Oz Gazit and Elad Gross, 2025, "Heterobinuclear Molecular Precursors Direct the Formation of Supported Sub-nanometer Cu–M Clusters with Tunable Catalytic Behavior", ACS Applied Materials and Interfaces, 17, (40), pp. 12
  • Robert M Rioux, Kayla Eudy, Shyam Deo, Zayne Weber and Michael J Janik, 2025, "Dynamic Variation of Ni and Pt Single Atom Oxidation States on CeO2 Nanocubes during CO Oxidation", ACS Catalysis, 15, (19), pp. 15
  • Robert M Rioux, Angela Nguyen, Griffin Canning and Michael J Janik, 2025, "A Markov chain Monte Carlo (MCMC) Bayesian inference approach to analyze apparent activation barriers and reaction orders from microreactor data", Journal of Catalysis, 451, pp. 13
  • Robert M Rioux, Emily K Schroeder, Seunghwa Hong, Xiaobo Chen, Adam S Hoffman, Zhihengyu Chen, Anastassiya Khan, Greg D Barber, Selin Bac, Judith C Yang, Christopher J Tassone, Simon R Bare and Phillip Christopher, 2025, "Structural Evolution and Stability of Rh/TiO2 Catalysts under Reverse Water Gas Shift Conditions: Influence of Initial Rh Structure", ACS Catalysis, 15, (14), pp. 14
  • Robert M Rioux, Samuel S Soliman, Mustafa Eid, Zachary Mitarotonda, Kathryn MacIntosh, Gaurav R Dey and Raymond E Schaak, 2025, "Post-synthetic Transformation of High Entropy Alloy Nanoparticles into High Entropy Intermetallics for Selective Acetylene Semi-hydrogenation Catalysis", Journal of the American Chemical Society, 147, (27), pp. 5
  • Robert M Rioux, Nilanjan Roy, Kathryn MacIntosh, Mustafa Eid and Griffin Canning, 2025, "The structural chemistry of intermetallic compounds enables active site design in heterogeneous catalysis", Chemical Science, 16, pp. 25
  • Robert M Rioux, Ran Wang, Zayne Weber, Michael J Janik and Antonios Armaou, 2025, "Identifying Elementary Reaction Kinetics of Heterogeneous Catalytic Mechanisms Using Pseudorandom Binary Sequence-Induced Transients", ACS Catalysis, 15, (3), pp. 12
  • Robert M Rioux, Griffin A Canning, Susanna Ogozaly, Matthew Pekarcik, Christopher A Lieb, Suprita Jharimune, Rueben Pfuwka and Bert Klumperman, 2025, "Complementary Reducing Agents are Responsible for Temporally Distinct Nucleation and Growth Phases during the Polyol Synthesis of Ag Nanocubes", Angewandte Chemie International Edition, 64, (6), pp. 9
  • Robert M Rioux, Rushi Gong, Anish Dasgupta, Shun-Li Shang, Haoran He, Melanie Kirkham, Eric K Zimmerer, Griffin A Canning, Michael J Janik and Zi-Kui Liu, 2025, "Determination of site occupancy in the M-Pd-Zn (M = Cu, Ag, and Au) ?-brass phase by CALPHAD modeling and Rietveld refinement", Inorganic Chemistry, 64, (4), pp. 11
  • Robert M Rioux, Ran Wang and Antonios Armaou, 2024, "Design optimal experiments for parameter identification of a dynamic model with perturbed inputs", Computer Aided Chemical Engineering, 53, pp. 3481-3486
  • Robert M Rioux, Wendy J S andaw, , 2024, "A US perspective on closing the carbon cycle to defossilize difficult-to-electrify segments of our economy", Nature Chemistry Reviews, 8, (5), pp. 376-400
  • Robert M Rioux, Ji Woong Chang, Yanyu Mu and Antonios Armaou, 2023, "Direct Determination of High-Affinity Binding Constants by Continuous Injection Isothermal Titration Calorimetry", Journal of Physical Chemistry B, 127, (50), pp. 10833-10842
  • Robert M Rioux, Akbar Mahdavi-Shakib, Todd N Whittaker, Tae Yong Yun, K. B. Sravan Kumar, Lauren C Rich, Shengguang Wang, Lars Grabow and Bert D Chandler, 2023, "The role of surface hydroxyls in the entropy-driven adsorption and spillover of H2 on Au/TiO2 catalysts", Nature Catalysis, 6, (8), pp. 710-719
  • Robert M Rioux, Haoran He, Griffin A Canning, Angela Nguyen, Anish Dasgupta, Randall J Meyer and Michael J Janik, 2023, "Active-site isolation in intermetallics enables precise identification of elementary reaction kinetics during olefin hydrogenation", Nature Catalysis, 6, (7), pp. 596-605
  • Robert M Rioux, Linxi Wang, Shyam Deo, Ahana Mukhopadhyay, Nicholas Pantelis and Michael Janik, 2022, "Emergent Behavior in Oxidation Catalysis over Single-Atom Pd on a Reducible CeO2 Support via Mixed Redox Cycles", ACS Catalysis, 12, (20), pp. 12927–12941
  • Robert M Rioux, Prawal Agrawal, Devon Jensen, Chien-Hua Chen and Themis Matsoukas, 2022, "Synthesis and Characterization of Magnesium/Boron Solid Solutions for Energetic Applications", ACS Applied Energy Materials, 5, (6), pp. 6716-6723
  • Robert M Rioux, Anish Dasgupta, Haoran He, Rushi Gong, Shun-Li Shang, Eric K Zimmerer, Zi-Kui Lui, Randall J Meyer and Michael J Janik, 2022, "Atomic Control of Active Site Ensembles in Ordered Alloys to Enhance Hydrogenation Selectivity", Nature Chemistry, 14, (5), pp. 523-529
  • Robert M Rioux, 2021, "Catalyst design for selective hydrogenation of benzene to cyclohexene through density functional theory and micro-kinetic modeling", ACS Catalysis, 11, pp. 11831-11842
  • Robert M Rioux, 2021, "Factors controlling the molecular modification of one-dimensional zeolites", Physical Chemistry Chemical Physics, 11, pp. 18610-18617
  • Robert M Rioux, 2021, "Continuous-injection isothermal titration calorimetry for in-situ evaluation of thermodynamic binding properties of ligand-receptor binding models", Journal of Physical Chemistry B, 125, (29), pp. 8075–8087
  • Robert M Rioux, 2021, "Solvent Dependent Impact of Spectator Anions on the Thermodynamics of Cation Exchange in CdSe Nanocrystals", Journal of Physical Chemistry C, 125, (23), pp. 12792–12801
  • Robert M Rioux, 2021, "Catalytic influence of light element incorporation in the lattice of palladium", Catalysis Today, (371), pp. 29-39
  • Robert M Rioux, 2021, "Understanding the Solution-Phase Growth of Cu and Ag Nanowires and Nanocubes from First Principles", Langmuir, 37, (15), pp. 4419–4431
  • Robert M Rioux, 2021, "Kinetics of H2 Adsorption at the Metal–Support Interface of Au/TiO2 Catalysts Probed by Broad Background IR Absorbance", Angewandte Chemie, 60, (14), pp. 7735-7743
  • Robert M Ri andux, , 2021, "Ring-opening and hydrodenitrogenation of indole under hydrothermal conditions over Ni, Pt, Ru and Ni-Ru bimetallic catalysts", Chemical Engineering Science, 406, (126853), pp. 14
  • Robert M Rioux, 2021, "Surface-functionalized Boron Nanoparticles with Reduced Oxide Content by Non-thermal Plasma Processing for Nanoenergetic Applications", ACS Applied Materials and Interfaces, 13, pp. 6844-6855
  • Robert M Rioux, 2021, "Chemical Identity of Poly(N-vinylpyrrolidone) End Groups Impact Shape Evolution during the Synthesis of Ag Nanostructures", Journal of the American Chemical Society, 143, pp. 184-195
  • Robert M Rioux, 2020, "Diffusion Doping of Cobalt in Rod-shape Anatase TiO2 Nanocrystals Leads to Antiferromagnetism", Nanoscale Advances, 2, pp. 4853-4862
  • Robert M Rioux, 2020, "Enhancement of Alkyne Semi-Hydrogenation Selectivity by Electronic Modification of Platinum", ACS Catalysis, 10, pp. 6763-6770
  • Robert M Rioux, Linxi Wang, Shyam Deo, Kerry Dooley and Michael J Janik, 2020, "Influence of metal nuclearity and physicochemical properties of ceria on the oxidation of carbon monoxide", Chinese Journal of Catalysis, 41, (6), pp. 951-962
  • Robert M Rioux, Yunwen Zhou, Yanyu Mu, Ming-Feng Hsieh, Bernd Kabius, Carlos N Pacheco, Carol Bator and Jeffrey D Rimer, 2020, "Enhanced Surface Activity of MWW Zeolite Nanosheets Prepared via a One Step Synthesis", Journal of the American Chemical Society, 142, pp. 8211-8222
  • Robert M Rioux, James E Bruno, Nicolas S Dwarica, Emily R Hand, Clemente S Guzman IV, Anish Dasgupta, Zhifeng Chen and Bert D Chandler, 2020, "Supported Ni–Au Colloid Precursors for Active, Selective, and Stable Alkyne Partial Hydrogenation Catalysts", ACS Catalysis, 10, (4), pp. 2565-2580
  • Robert M Rioux, Shelton JP Varapragasam, Shahzahan Mia, Carly Wieting, Choumini Balasanthiran, James D Hoefelmeyer, Md Yeathad Hossan and Aravind Baride, 2019, "Ag/TiO2 hybrid nanoparticles as active photocatalyst for hydrogen evolution", 2, (11), pp. 8274-8282
  • Robert M Rioux, Linxi Wang, Mohammed Al-Aufi, Carlos N Pacheco and Liyuan Xie, 2019, "Increased amine efficiency with simultaneous decreased heat of sorption of CO2 to blended polyethyleneglycol (PEG)/polyethylenimine(PEI) impregnated silica", 7, (17), pp. 14785-14795
  • Robert M Rioux, Anish Dasgupta, Eric K Zimmerer and Randall E Meyer, 2019, "Generalized approach for the synthesis of silica supported Pd-Zn, Cu-Zn and Ni-Zn gamma brass phase nanoparticles", 334, pp. 231-242
  • Robert M Rioux, Aaron Garg, Danielle S Gonçalves, Yusu Liu, Zhenshu Wang, Linxi Wang, Jong Suk Yoo, Alexie Kolpak, Daniela Zanchet and Yuriy Roman-Leshkov, 2019, "Impact of Transition Metal Carbide and Nitride Supports on the Electronic Structure of Thin Platinum Overlayers", 9, (8), pp. 7090-7098
  • Robert M Rioux and Anish Dasgupta, 2019, "Intermetallics in Catalysis: An Exciting Subset of Multimetallic Catalysts", Catalysis Today, 330, pp. 2-15
  • Robert M Rioux, Haoran He, Anish Dasgupta, Randall J Meyer and Michael J Janik, 2019, "Competitive Hydrogenation between Linear Alkenes and Aromatics on Close-Packed Late Transition Metal Surfaces", 123, (13), pp. 8370-8378
  • Robert M Rioux, James E Bruno, Nicolas S Dwarica, Alexander Huther, Zhifeng Chen, Clemente S Guzman IV, Emily R Hand, William C Moore, Lars C Grabow, Bert D Chandler and K. B. Sravan Kumar, 2019, "On the Limited Role of Electronic Support Effects in Selective Alkyne Hydrogenation: A Kinetic Study of Au/MOx Catalysts Prepared from Oleylamine-Capped Colloidal Nanoparticles", 6, (11), pp. 1650-1664
  • Robert M Rioux, Zhifeng Chen, Ji Woong Chang, Choumini Balasanthiran and Scott T Milner, 2019, "Anisotropic Growth of Silver Nanoparticles Is Kinetically Controlled by Polyvinylpyrrolidone Binding", 141, (10), pp. 4328-4337
  • Robert M Rioux, Max A Mellmer, Chotitath Sanpitakseree, Benginur Demir, Kaiwen Ma, William A Elliott, Peng Bai, Robert L Johnson, Theodore W Walker, Brent H Shanks, Matthew Neurock, James A Dume andic, , 2019, "Effects of chloride ions in acid-catalyzed biomass dehydration reactions in polar aprotic solvents", 10, pp. 1132
  • Robert M Rioux, Zhifeng Chen, Tonnam Balankura and Kristen A Fichthorn, 2019, "Revisiting the Polyol Synthesis of Silver Nanostructures: Role of Chloride in Nanocube Formation", 13, (2), pp. 1849-1860
  • Robert M Rioux, Yang Guo, Zhifeng Chen and Phillip Savage, 2019, "Hydrothermal reaction of tryptophan over Ni-based bimetallic catalysts", 143, pp. 336-345
  • Robert M Rioux, Linxi Wang and Seyed Mehdi Kamali Shahri, 2018, "CO2 capacity and heat of sorption on a polyethylenimine-impregnated silica under equilibrium and transient sorption conditions", Journal of Physical Chemistry C, 122, pp. 11442-11449
  • Robert M Rioux, Choumini Balasanthiran, Stephanie Jensen, Charles S Spanjers, Shelton JP Varapragasam, Dmitri Kilin and James D Hoefelmeyer, 2018, "Quantitative Attachment of Bimetal Combinations of Transition Metal Ions to the Surface of TiO2 Nanorods", Langmuir, 34, pp. 5422-5434
  • Robert M Rioux and Seong H Kim, 2018, "Molecular Surface Science, Nanomaterials & Catalysis: Symposium in Honor of Gabor Somorjai at 80", 61, pp. 711-713
  • Robert M Rioux, Yong Yang and Ji Woong Chang, 2018, "Structural Elucidation of Supported Rh Complexes Derived from RhCl(PPh3)3 Immobilized on Surface-Functionalized SBA-15 and their Catalytic Performance for C-Heteroatom (S, O) Bond Formation", 365, pp. 43-54
  • Robert M Rioux, Antonios Armaou, Manda Yang, Linxi Wang and Seyed Medhi Kamali Shahri, 2018, "Investigation of CO2 sorption mechanisms in isothermal columns via transient material and energy balance PDE models", 57, pp. 10303-10314
  • Robert M Rioux, Suprita Jharimune and Ajay A Sathe, 2018, "Thermochemical measurements of cation exchange in CdSe nanocrystals using isothermal titration calorimetry", Nano Letters, 18, pp. 6795-6803
  • Robert M Rioux, 2018, "Evaluating Differences in Supported Au Nanoparticle Catalyst Active Site Electronics Using Hammett and DFT Studies", Nature Chemistry, 10, (3), pp. 268-274
  • Robert M Rioux, Shelton JP Varapragasam, Choumini Balasanthiran, Ashim Gurung, Qiquan Qiao and James D Hoefelmeyer, 2017, "Kirkendall Growth of Hollow Mn3O4 Nanoparticles upon Galvanic Reaction of MnO with Cu2+ adn Evaulation as Anode for Lithium-Ion Batteries", Journal of Physical Chemistry C, 121, (21), pp. 11089-11099
  • Robert M Rioux, Long Qi, Ricardo Alamillo, William A Elliott, Amity Anderson, David W Hoyt, Eric D Walter, Kee Sung Han, Nancy D Washton, James A Dumesic and Susannah L Scott, 2017, "Operando Solid-State NMR Observation of Solvent-Mediated Adsorption-Reaction of Carbohydrates in Zeolites", ACS Catalysis, 7, (5), pp. 3489-3500
  • Robert M Rioux, Charles S Spanjers, Anish Dasgupta, Melanie Kirkham, Blake Burger, G Kumar and Michael J Janik, 2017, "Determination of Bulk and Surface Atomic Arrangement in Ni-Zn Gamma Brass Phase at Different Ni to Zn Ratios", Chem. Mater., 29, pp. 504-512
  • Robert M Rioux, Charles S. Spanjers, Pascal Guillo, Michael J Janik and T. Don Tilley, 2017, "Identification of second shell coordination in transition metal species using theoretical XANES: Examples of Ti-O-(C, Si, Ge) molecular complexes", J. Phys. Chem. C, 121, pp. 162-167
  • Robert M Rioux, Ajay Sathe and Anirudh Nambiar, 2017, "Synthesis of cyclic organic carbonates via catalytic oxidative carboxylation of olefins in flow reactors", Catalysis Science and Technology, 7, (1), pp. 84-89
  • Robert M Rioux, C S Sievers, Y Noda, L Qi, E M Albuquerque and S L Scott, 2016, "Phenomena in Catalytic Reactions at Solid-Liquid Interfaces", ACS Catalysis, 6, pp. 8286-8307
  • Robert M Rioux, S G Turney, M Ahmed, I Chandrsekar, R B Wysolmerski, Z M Goeckeler, G M Whitesides and P C Bridgman, 2016, "Nerve growth factor stimulates axon outgrowth through negative regulation of growth cone actomyosin restraint of microtubule advance", Molecular Biology of the Cell, (27), pp. 500-517
  • Robert M Rioux, A Gellman and P Stair, 2016, "Editorial: Special issue dedicated to Gabor Somorjai’s 80th birthday", Surf. Sci., (648), pp. 1
  • Robert M Rioux, J Saavedra, T Whittaker, Z Chen, C J Pursell and B D Chandler, 2016, "Controlling activity and selectivity using water in the Au-catalyzed preferential oxidation in CO in H2", Nature Chem, (8), pp. 585-590
  • Robert M Rioux, Y Noda, K Li, A Engler and W A Elliot, 2016, "Development of Robust Sulfur Quantification and Speciation Method for SBA-15 Supported Sulfonic Acid Catalysts", Catal. Sci. Technol., (6), pp. 5961-5971
  • Robert M Rioux, Davood Babaei Pourkargar, Seyed Mehdi Kamali Shahri and Antonios Armaou, 2016, "Spatiotemporal Modeling and Parametric Estimation of Isothermal CO2 Adsorption Columns", Ind. Eng. Chem. Res., (55), pp. 6443-6453
  • Robert M Rioux, M. E. Strayer, T. P. Senftle, J. P. Winterstein, N. M. Vargos-Barbosa, R. Sharma, Michael J Janik and T. E. Mallouk, 2015, "Charge Transfer Stabilization of Late Transition Metal Oxide Nanoparticles on a Layered Niobate Support", J. Am. Chem. Soc., 137, (51), pp. 16216-16224
  • Robert M Rioux, B. Panthi, A. Mukopadhyay, L. Tibbitts, J. Saavedra, C. J. Pursell and B. D. Chandler, 2015, "Using Thiol Adsorption on Supported Au Nanoparticle Catalysts to Evaluate Au Dispersion and the Number of Active Sites for Benzyl Alcohol Oxidation", ACS Catal, 5, pp. 2232-2241
  • Robert M Rioux and F. D. Toste, 2015, "Catalysis Science and Technology: Catalysis in the USA", Catal Sci Technol, 5, pp. 1357-1359
  • Charles S Spanjers, Richard S Sim, Nicholas P Sturgis and Robert M Rioux, 2015, "In-situ Characterization of Ni1-xZnx/ZnO Catalysts and their Selectivity for Acetylene Semihydrogenation in Excess Ethylene", ACS Catal., 5, pp. 3304-3315
  • Robert M Rioux, A. Sathe, M. A. Peck, C. Balasanthiran, M. A. Langell and J. D. Hoefelmeyer, 2014, "X-ray photoelectron spectroscopy of transition metal ions attached to the surface of rod-shape anatase TiO2 nanocrystals", Inorganica Chimica Acta, 422, pp. 8-13
  • Robert M Rioux, D. Childers, N. M. Schweitzer, S. M. Kamali Shahri, J. T. Miller and R. J. Meyer, 2014, "Evidence for Geometric Effects in Neopentane Conversion on PdAu Catalysts", Catal Sci Technol, 4, pp. 4366-4377
  • Robert M Rioux, D. Childers, S. M. Kamali Shahri, N. Schweitzer, J. T. Miller and R. J. Meyer, 2014, "Modifying structure-sensitive reactions by addition of Zn to Pd", J. Catal, 318, pp. 75-84
  • Robert M Rioux, C. S. Spanjers, T. P. Senftle, A. C. T. van Duin, Michael J Janik and A. I. Frenkel, 2014, "Illuminating Surface Atoms in Nanoclusters by Differential X-ray Absorption Spectroscopy", Phys. Chem. Chem. Phys., 16, pp. 26528-26538
  • Y. Yang and Robert M Rioux, 2014, "Highly Stereoselective Anti-Markovnikov Hydrothiolation of Alkynes and Electron-Deficient Alkenes by a Supported Cu-NHC Complex.", Green Chem, 16, pp. 3916-3925
  • S. M. McCarthy, Y. C. Lin, D. Devarajan, J. W. Chang, H. Yennawar, Robert M Rioux, D. H. Ess and A. T. Radosevich, 2014, "Intermolecular N-H Oxidative Addition of Ammonia, Alkylamines and Arylamines to a Planar ?3-Phosphorus Compound via an Entropy-Controlled Electrophlic Mechanism.", J. Am. Chem. Soc., 136, pp. 4640-4650
  • E. G. Moschetta, K. M. Gans and Robert M Rioux, 2014, "Elucidating the Roles of Enthalpy, Entropy, and Donor Atom in the Chelate Effect for Binding Different Bidentate Ligands on the Same Metal Center", Journal of Catalysis 309, pp. 11-20
  • M. A. Smith, A. Zoelle, Y. Yang, Robert M Rioux, N. Hamilton, K. Amakawa, P. K. Nielsen and A. Trunschke, 2014, "Surface roughness effects in the catalytic behavior of vanadia supported on SBA-15.", J. Catal., 312, pp. 170-178
  • M. Strayer, J. M. Binz, M. Tanase, S. M. Kamali Shahri, R. Sharma, Robert M Rioux and T. E. Mallouk, 2014, "Interfacial bonding stabilizes rhodium and rhodium oxide nanoparticles on layered Nb- and Ta oxide supports.", J. Am. Chem. Soc., 136, pp. 5687-5696
  • C. S. Spanjers, J. T. Held, M. J. Jones, D. D. Stanley, R. S. Sim, Michael J Janik and Robert M Rioux, 2014, "Zinc Inclusion to Heterogeneous Nickel Catalysts Reduces Oligomerization during the Semihydrogenation of Acetylene.", J. Catal., 316, pp. 164-173
  • M. H. Do, T. Wang, Dang-Guo Cheng, Robert M Rioux and J. Gong, 2014, "Simple Strategies for Fabrication of a Periodic Mesoporous Aluminosilicate with Crystalline Walls", Small, 10, pp. 4249-4256
  • Robert M Rioux, V. Ravi and J. M. Binz, 2013, "Thermodynamic Profiles at the Solvated Inorganic-Organic Interface: The case of Gold-Thiolate Monolayers", Nano Lett., 13, pp. 4442-4448
  • Robert M Rioux, E. G. Moschetta and Kristina M. Gans, 2013, "Characterization of sites of different thermodynamic affinities on the same metal center via isothermal titration calorimetry", Journal of Catalysis, 302, pp. 1-9
  • Robert M Rioux, Y. Yang and Eric G. Moschetta, 2013, "Addition of Sulfonic Acids to Terminal Alkynes Catalyzed by a Rhodium Complex: Ligand Concentration-Controlled Reaction Selectivity", ChemCatChem, 5, pp. 3005-3013
  • Robert M Rioux, W. Kang, C. S. Spanjers and J. D. Hoefelmeyer, 2013, "Synthesis of brookite TiO2 nanorods with isolated Co(II) surface sites and photocatalytic degradation of 5,8-dihydroxy-1,4-naphthoquinone dye", J. Mater. Chem. A, 1, pp. 7717-7728
  • Robert M Rioux, S. Jana and J. W. Chang, 2013, "Synthesis and Modeling of Hollow Intermetallic Ni-Zn Nanoparticles Formed by the Kirkendall Effect", Nano Lett., 13, pp. 3618-3625
  • Robert M Rioux, D. Childers, A. Saha, N. Schweitzer, J. T. Miller and R. J. Meyer, 2013, "Correlating Heat of Adsorption to Reaction Selectivity: Size Effects in Neopentane Isomerization over Pt and Pd Catalyst", ACS Catal., 3, pp. 2487-2496
  • Robert M Rioux, P. Cordeiro, P. Guillo, C. S. Spanjers, J. W. Chang, M. Lipschutz, M. Fasulo and T. D. Tilley, 2013, "Titanium-Germoxy Precursor Route to Germanium-Modified Epoxidation Catalysts with Enhanced Activity", ACS Catal., 3, pp. 2269-2279
  • Robert M Rioux, Y. Yang, W. Dong and Y. Guo, 2013, "Cu(I)-Catalyzed Aerobic Cross-Dehydrogenative Coupling of Terminal Alkynes with Thiols for Construction of Alkynyl Sulfides", Green Chem., 15, pp. 3170-3175
  • Robert M Rioux and S. Janna, 2012, "Seeded Growth Induced Amorphous to Crystalline Transformation of Niobium Oxide Nanostructures", Nanoscale, 4, pp. 1782-1788
  • Robert M Rioux, S. J. Kweskin, H. Song, K. Komvopoulos, P. Yang and G. A. Somorjai, 2012, "High-Pressure Adsorption of Ethylene on Cubic Pt Nanoparticles and Pt(100) Single Crystals Probed by in Situ Sum Frequency Generation Vibrational Spectroscopy", ACS Catal., 2, pp. 2377-2386
  • Robert M Rioux, Yeon S. Choi, Eric G. Moschetta, Jeffrey T. Miller, Meg Fasulo, Meredith J. McMurdo and T. Don Tilley, 2011, "Highly Dispersed Pd-SBA15 Materials from Tris(tert-butoxy)siloxy Complexes of Pd(II)", ACS Catalysis 1, pp. 1166-1177
  • Robert M Rioux and Y. Yang, 2011, "Highly regio- and stereoselective hydrothiolation of acetylenes with thiols catalyzed by a well-defined supported Rh complex", Chemical Communications, 47, pp. 6557-6559
  • Robert M Rioux and J. Gong, 2011, "Heterogeneous catalysis by metals: New synthetic methods and characterization techniques for high reactivity preface", Catalysis Today, 160, pp. 1-2
  • Robert M Rioux, S. Eldahj, M. D. Dickey, J. J. DeYoreo and G. M. Whitesides, 2010, "Subnanometer Replica Molding of Molecular Steps on Ionic Crystals", Nano Lett., pp. 4140-4145
  • Robert M Rioux, N. Chen, Luis A. M. M. Barbosa and F. H. Ribeiro, 2010, "Kinetic and Theoretical Study of the Hydrodechlorination of CH4-xClx (x=1-4) Compounds on Palladium", Langmuir, 26, pp. 16615-16624
  • Robert M Rioux, S. H. Kim and F. H. Ribeiro, 2010, "Preface to the Molecular Surface Chemistry and Its Applications Special Issue", Langmuir, 26, pp. 16187-16189
  • Robert M Rioux, D. J. Lipomi, R. V. Martinez, L. Cademartiri, W. F. Reus and G. M. Whitesides, 2010, "Survey of Materials for Nanoskiving and Influence of the Cutting Process on the Nanostructures Produced", ACS Applied Materials and Interfaces, 2, pp. 2503-2514
  • Robert M Rioux, M. E. Grass and G. A. Somorjai, 2009, "Dependence of gas-phase crotonaldehyde hydrogenation selectivity and activity on the size of Pt nanoparticles (1.7-7.1 nm) supported on SBA-15", Catal. Lett., 128, pp. 1-8
  • Robert M Rioux, J. Gingras, D. Cuvelier, N. A. Geisse, L. Mahadevan, J. W. Lichtman, G. M. Whitesides and J. R. Sanes, 2009, "Controlling the Orientation and Synaptic differentiation of Myotubes with Micropatterned Substrates", Biophysical Journal, 97, pp. 2771-2779
  • Robert M Rioux, J. D. Hoefelmeyer, M. Grass, H. Song, K. Niesz, P. D. Yang and G. A. Somoraji, 2008, "Adsorption and co-adsorption of ethylene and carbon monoxide on silica-supported monodisperse Pt nanoparticles. Volumetric adsorption and infrared spectroscopy studies", Langmuir, 24, pp. 198-207
  • Robert M Rioux, H. Song, M. Grass, J. D. Hoefelmeyer, K. Niesz, P. D. Yang and G. A. Somoraji, 2008, "Kinetics and mechanism of the poisoning of ethylene hydrogenation by CO on silica-supported monodisperse Pt nanoparticles", J. Catal., 254, pp. 1-11
  • Robert M Rioux, M. E. Grass, Y. Yue, S. E. Habas, C. I. Teall, P. Yang and G. A. Somorjai, 2008, "Silver ion mediated shape control of platinum nanoparticles: Removal of silver by selective etching leads to increased catalytic activity", J. Phys. Chem. C, 112, pp. 4797-4804
  • Robert M Rioux, D. A. Ruddy, J. Jarupatrakorn, J. T. Miller, M. J. McMurdo, K. A. Tupper and T. D. Tilley, 2008, "Site-Isolated Pt-SBA15 Materials from Tris(tert-butoxy)siloxy Complexes of Pt(II) and Pt(IV)", Chem. Mater., 20, pp. 6517-6527
  • Robert M Rioux, B. Hsu, M. E. Grass, H. Song and G. A. Somorjai, 2008, "Influence of particle size on reaction selectivity in cyclohexene hydrogenation and dehydrogenation over silica-supported monodisperse Pt particles", Catal. Lett., 126, pp. 10-19
  • Robert M Rioux, Q. Xu, M. D. Dickey and G. M. Whitesides, 2008, "Nanoskiving: A New Method to Produce Nanomaterials", Acc. Chem. Res., 41, pp. 1566-1577
  • Robert M Rioux, T. J. Toops and W. N. Delgass, 2007, "M. Albert Vannice Festschrift", Catal. Today, 123, pp. 2-5
  • Robert M Rioux, Q. Xu, J. Bao, R. Perez-Castejillos, F. Capasso and G. M. Whitesides, 2007, "Fabrication of Large-Area Patterned Nanostructures for Optical Applications by Nanoskiving", Nano Lett., 7, pp. 2800-2805
  • Robert M Rioux, Q. Xu and G. M. Whitesides, 2007, "Fabrication of Complex Nanostructures by Nanoskiving", ACS Nano, 1, pp. 215-221
  • Robert M Rioux, M. Yang and G. A. Somorjai, 2006, "Reaction kinetics and in-situ sum frequency generation surface vibrational spectroscopy studies of cycloalkene hydrogenation/ dehydrogenation on Pt(111): substituent effects and CO poisoning mechanism", J. Catal., 237, pp. 255-266
  • Robert M Rioux, H. Song, J. D. Hoefelmeyer, R. Komor, K. Niesz, M. Grass, P. Yang and G. A. Somorjai, 2006, "Hydrothermal growth of mesoporous SBA-15 silica in the presence of PVP-stabilized Pt nanoparticles: Synthesis, characterization, and catalytic properties", J. Am. Chem. Soc., 128, pp. 3027-3037
  • Robert M Rioux, G. A. Somorjai, A. M. Contreras and M. Montano, 2006, "Clusters, Surfaces, and Catalysis", Proc. Nat. Acad., U. S. A, 103, pp. 10577-83
  • Robert M Rioux, S. Kweskin, S. E. Habas, K. Komvopoulos, P. Yang and G. A. Somorjai, 2006, "Carbon Monoxide Adsorption and Oxidation on Monolayer Films of Cubic Platinum Nanoparticles Investigated by Infrared-Visible Sum Frequency Generation Vibrational Spectroscopy", J. Phys. Chem. B, 110, pp. 15920-15925
  • Robert M Rioux, H. Song, M. Grass, S. Habas, K. Niesz, J. D. Hoefelmeyer, P. Yang and G. A. Somorjai, 2006, "Monodisperse platinum nanoparticles of well-defined shape: Synthesis, characterization, catalytic properties and future prospects", Top. Catal., 39, pp. 167-174
  • Robert M Rioux, A. L. Marsh, J. S. Gaughan and G. A. Somorjai, 2006, "Oxidation and reforming reactions of methane on a stepped Pt(557) single crystal", Catal. Today, 123, pp. 265-275
  • Robert M Rioux, H. Song, J. D. Hoefelmeyer, P. Yang and G. A. Somorjai, 2005, "High-Surface-Area Catalyst Design: Synthesis, Characterization, and Reaction Studies of Platinum Nanoparticles in Mesoporous SBA-15 Silica", J. Phys. Chem. B, 109, pp. 2192-2202
  • Robert M Rioux and G. A. Somorjai, 2005, "High Technology Catalysts Towards 100% Selectivity. Fabrication, Characterization, and Reaction Studies", Catalysis Today, 100, pp. 201-215
  • Robert M Rioux and M. A. Vannice, 2005, "Dehydrogenation of isopropyl alcohol on carbon-supported Pt and Cu-Pt catalysts", J. Catal., 233, pp. 147-165
  • Robert M Rioux, Y. Yin, C. K. Erdonmez, S. Hughes, G. A. Somorjai and A. P. Alivisatos, 2004, "Formation of Hollow Nanocrystals through the Nanoscale Kirkendall Effect", Science, 304, pp. 711-714
  • Robert M Rioux, N. Chen and F. H. Ribeiro, 2004, "Hydrodechlorination reactions of 2-chloro-1,1,1,2-tetrafluoroethane and chloroethane in H2 and D2 on Pd catalysts", Appl. Catal. A-Gen, 271, pp. 85-94
  • Robert M Rioux and M. A. Vannice, 2003, "Hydrogenation/dehydrogenation: Isopropanol dehydrogenation over copper catalysts", J. Catal., 216, pp. 362-376
  • Robert M Rioux, N. Chen and F. H. Ribeiro, 2002, "Investigation of Reaction Steps for the Hydrodechlorination of Chlorine-Containing Organic Compounds on Pd Catalysts", J. Catal., 211, pp. 192-197
  • Robert M Rioux, K. O. Nowack, C. Na, X. Wu and L. R. Radovic, 2001, "A commentary on "Effect of metal additives on the physico-chemical characteristics of activated carbon exemplified by benzene and acetic acid adsorption", Carbon, 39, pp. 951-953
  • Robert M Rioux, C. D. Thompson, N. Chen and F. H. Ribeiro, 2000, "Turnover Rate, Reaction Order and Elementary Steps for the Hydrodechlorination of Chlorofluorocarbons on Palladium Catalysts", J. Phys. Chem. B, 104, pp. 3067-3077
  • Robert M Rioux, C. D. Thompson, N. Chen and F. H. Ribeiro, 2000, "Hydrodechlorination of chlorofluorocarbons CF3-CFCl2 and CF3-CCl3 over Pd/C and Pd black catalysts", Catal. Today, 62, pp. 269-278

Other

  • Robert M Rioux, 2009, "Liquid Phase Oxidation via Heterogeneous Catalysis"
  • Robert M Rioux, H. Song, P. Yang and G. A. Somoraj, 2007, "Platinum Nanoclusters: Size and Shape Surface Structure Sensitivity of Catalytic Reactions"
  • Robert M Rioux, G. A. Somorjai and J. Grunes, 2003, "Fabrication of Two-Dimensional and Three-Dimensional Platinum Nanoclusters to Serve as High Technology Catalysts - Catalysts Capable of 100% Reaction Selectivity", pp. 97-125

Research Projects

Honors and Awards

  • PSEAS Outstanding Teaching Award, Penn. State Engineering Alumni Association Society, 2018

Service

Service to Penn State:

Service to External Organizations: