Regalbuto, John R. - University of South Carolina - Department of Chemical Engineering

个人简介

Education Ph.D., University of Notre Dame, 1986. M.S., University of Notre Dame, 1983. B.S., Texas A&M University, 1981.

研究领域

One of the major research avenues of our group is the study of the preparation of solid catalysts. A typical example is the platinum or rhodium containing automobile catalytic converter used to eliminate carbon monoxide, nitric oxide, and hydrocarbons from auto exhaust. Solid catalysts are usually composed of a metal or metal oxide deposited onto or supported on a high surface area, refractory oxide, which produces small, well anchored metal particles with a maximum amount of exposed metal surface. Our current efforts involve the use and comparison of different methods for synthesis of a variety of catalysts especially using Strong Electrostatic Adsorption ( SEA ) in producing catalysts with high dispersion. The studies are also done to rigorously and systematically verify an underlying theory we have revived from the colloid science literature to predict how much metal will be adsorbed by the oxide for a full range of liquid conditions. We also investigate coupled methods for catalyst synthesis especially in the cases of bimetallic and bifunctional catalysts. In a second vein of work, we look at a further step of catalyst preparation. After impregnation and drying, the catalyst is put through a series of heat and chemical treatments to activate the metal. We study how the shape and chemical structure of the deposited metal particles change as a function of pretreatment conditions. In some cases the size and shape of particles can be controlled. For these studies we use various types of characterization techniques such as electron microscopy and x-ray diffraction.

近期论文

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Pham, H., and Regalbuto, J.R., The Correlation of Carbon PZC to DRIFTS Characterization, in preparation. Barnes, S., A., and Regalbuto, J.R., Rational Syntheses of Oxide Supported Au Catalysts, 2. Preparations using cationic gold bis-ethylenediamine, in preparation. Zha, Y., Barnes, S., Dering, A., and Regalbuto, J.R., Rational Syntheses of Oxide Supported Au Catalysts, 1. Preparations using anionic tetracholoroaurate, in preparation. Castorano, M., Robles, J.T., Regalbuto, J. R., Kropf, A.J., and Miller, J.T., A Fundamental Study of Pt Adsorption onto Carbon 3. Extension to High Surface Area Carbon Black, in preparation. Hao, X., Regalbuto, J. R., Kropf, A.J., and Miller, J.T., A Fundamental Study of Pt Adsorption onto Carbon: Low pH Pt Reduction at Long Contact Time, in preparation. Banerjee, R., Contreras, J., and Regalbuto, J.R., The Electrostatic Adsorption of Pt Anions and Cations over Specialty Carbons, in preparation. Banerjee, R., Chen, D.A., Job, N., and Regalbuto, J.R., The Role of Carbon Support in the Oxidation of Ultra-small Pt Nanoparticles, in preparation. AlMalki, F., Cao, C., Monnier, J.R., and Regalbuto, J.R., Promotion of Silica Supported Iron Fischer-Tropsch Catalysts with Minute Amounts of Pt, in preparation. AlMalki, F., Cao, C., Monnier, J.R., and Regalbuto, J.R., Promotion of Silica Supported Cobalt Fischer-Tropsch Catalysts with Minute Amounts of Pt, in preparation. Liu, Q., Tengco, J.M.M., Banerjee, R., Keels, J., and Regalbuto, J.R., Accurate Subtraction and Deconvolution of Pt Nanoparticles from Crystalline Supports Using Powder XRD with a High Sensitivity Detector, in preparation. Cho, H.R., Barnes, S., Tengco, J.M.M., Shaw, G., Hutchings, G.J., Sanchez, S.I., Bradley, S.A., and Regalbuto, J.R., Electrostatic Adsorption for the Synthesis of Highly Active Bimetallic Au/Pd/Carbon Catalysts for Benzyl Alcohol Oxidation, in preparation. Cho, H.R., Houghton, J., Thompsett, D., and Regalbuto, J.R., The Adsorption of Noble Metal Ammine Cations onto Noble Metal Oxides for Bimetallic Nanoparticle Synthesis, in preparation. O’Connell, K. C., Monnier, J.R., and Regalbuto, J.R., The Stabilization of Au Shells by High Surface Free Energy Core Anchoring for Acetylene Hydrochlorination, in preparation. Cao, S., Williams, C.T., Vannucci, A., Monnier, J.R., and Regalbuto, J.R., Electrostatically Adsorbed Bimetallic Ru-Re Catalysts for the Hydrogenation of Levulinnic Acid to γ-Valerolactone, in preparation. Liu, Q., Wong, A.P., and Regalbuto, J.R., Rational Synthesis of Pd Bimetallic Catalysts for Furfural Conversion, in preparation. Wong, A., Liu, Q., Griffin, S., Nichols, A., and Regalbuto, J.R., A Simple Synthesis of Highly Dispersed, Homogeneously Alloyed, Supported Bimetallic Nanoparticles, Science, 2018, 358, 1427 Satjaritanum, P., Bringley, E., Weidner, J.W., Khunatorn, Y., Regalbuto, J.A., Regalbuto, J.R., and Shimpalee, S., Experimental and Computational Investigation of Mixing with Contra-Rotating, Baffle-Free Impellers, Chem. Eng. Res. Des. 2018, 130, 63 O’Connell, K. C., Monnier, J.R., and Regalbuto, J.R., The Sintering and Active Sites of Supported Gold Catalysts for the Hydrodechlorination of Acetylene, Appl. Catal. B. Env., 2018, 225, 264 Khivantsev, K., Biancardi, A., Fathizadeh, M., Almalki, F., Grant, J.L., Tie, H.N., Shakouri, A., Regalbuto, J.R., Blom, D., Makris, T., Caricato, M., and Yu, M., Thermally Stable Single-Site Cobalt Catalysts Supported on Silica: Catalytic Ammonia Decomposition and Direct Activity Comparison with Ultra-Small Cobalt Nanoparticles, ChemCatChem 2018, 10, 736 Gilliland, S.E., Tengco, J.M.T., Yang, Y., Regalbuto, J.R., Castano, C.E., and Gupton, B.F., Electrostatic adsorption-microwave synthesis of palladium nanoparticles on graphene for improved cross-coupling activity, Applied Catalysis A: General 2018, 550, 168 (Review paper) Tavakoli, B., Eskandari, S., Khan, U., White, R.D., and Regalbuto, J.R., A Review of Preparation Methods for Supported Metal Catalysts, Adv. Catal., 2017, 61, 1 Seuser, G.S., Banerjee, R., Metavarayuth, K., Brandt, A.J., Maddamumapatabandi, T.D., Karakalos, S., Lin, Y., Regalbuto, J.R., and Chen, D.A., Understanding Uptake of Pt Precursors During Strong Electrostatic Adosrption on Single-Crystal Carbon Surfaces, Topics in Catalysis 2018, 61, 379