Zobrazeno 1 - 10
of 295
pro vyhledávání: '"M.A. Vannice"'
Autor:
Robert M. Rioux, M.A. Vannice
Publikováno v:
Journal of Catalysis. 233:147-165
The kinetics of isopropyl alcohol (IPA) dehydrogenation over carbon-supported Pt and three bimetallic Cu Pt catalysts were examined and compared with previous results for carbon-supported Cu. Adsorption of H 2 and CO, dissociative chemisorption of N
Autor:
M.A. Vannice, Robert M. Rioux
Publikováno v:
Journal of Catalysis. 216:362-376
For accurate catalyst comparisons and kinetic modeling, data free of mass and heat transfer effects must be acquired over a range of temperature and reactant concentrations using well-characterized heterogeneous catalysts. For semibatch reactors oper
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 162:287-295
A two-charge-carrier model that assumes coexisting high-mobility, low-concentration bulk, semiconduction electron charge carriers and low-mobility, variable-concentration surface-trapped-electron charge carriers is used to explain measured electrical
Publikováno v:
Journal of Catalysis. 192:29-47
The adsorption behavior of NO on La2O3, an effective catalyst for selective NO reduction with CH4 at temperatures above 800 K, depends upon the pretreatment as indicated by temperature-programmed desorption (TPD) and diffuse reflectance FTIR spectros
Publikováno v:
Applied Catalysis B: Environmental. 26:101-118
The surface properties of La 2 O 3 supported on γ-Al 2 O 3 , as characterized by DRIFTS or temperature-programmed desorption (TPD), showed features more and more similar to unsupported La 2 O 3 as the La 2 O 3 loading increased. Optimum rates (mole/
Publikováno v:
Topics in Catalysis. 10:27-38
Copper supported on three different allotropic forms of carbon materials have been prepared and evaluated as catalysts for the N2O decomposition and reduction reactions. It was found that all the catalysts underwent severe deactivation during the N2O
Autor:
A. Dandekar, M.A. Vannice
Publikováno v:
Applied Catalysis B: Environmental. 22:179-200
The kinetics of N 2 O decomposition were investigated over Cu/carbon, Cu/Al 2 O 3 , Cu/SiO 2 , and Cu/ZSM-5 catalysts with the intent of monitoring the requirements for achieving stoichiometric catalytic decomposition over Cu and elucidating the role
Autor:
B. Klingenberg, M.A. Vannice
Publikováno v:
Applied Catalysis B: Environmental. 21:19-33
In situ diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS) was performed to study the reaction mechanism of NO decomposition on La2O3. Peak assignments were verified by establishing isotope shifts of species formed after adsorption
Publikováno v:
Journal of Catalysis. 183:131-154
The adsorption and catalytic behavior of Cu supported on different forms of carbons, i.e., activated carbon, graphitized carbon fibers, and diamond powder, were examined during crotonaldehyde hydrogenation. Activities as well as turnover frequencies
Publikováno v:
Journal of Catalysis. 183:32-44
A combination of techniques including controlled atmosphere electron microscopy coupled within situelectron diffraction has been used to follow the manner by which the nature of a carbonaceous support can impact both the chemistry and morphological p