Journal ArticleDOI
Effects of cerium addition on CO oxidation kinetics over alumina-supported rhodium catalysts
Se H. Oh,Carolyn C. Eickel +1 more
Reads0
Chats0
TLDR
In this paper, the addition of sufficient amounts of cerum oxides (≥2 wt% Ce) to the Rh/Al 2 O 3 catalyst was found to cause the following changes in CO oxidation kinetics: suppression of the CO inhibition effect, decreased sensitivity of the reaction rate to gas-phase O 2 concentration, and decreased apparent activation energy.About:
This article is published in Journal of Catalysis.The article was published on 1988-08-01. It has received 180 citations till now. The article focuses on the topics: Chemical kinetics & Catalysis.read more
Citations
More filters
Journal ArticleDOI
High rates of NO and N2O reduction by CO, CO and hydrocarbon oxidation by O2 over nano crystalline Ce0.98Pd0.02O2−δ: Catalytic and kinetic studies
TL;DR: In this article, the three way catalytic activity of this catalyst was investigated by performing NO+CO reaction and CO and hydrocarbon oxidation and the rates and the apparent activation energies of the reaction for NO reduction by CO and CO/HCO and hydrocarbons oxidation were determined.
Journal ArticleDOI
Effect of hydrothermal aging on oxygen storage/release and activity in a commercial automotive catalyst
TL;DR: In this article, the effect of aging on the oxygen storage/release and activity in a commercial automotive catalyst containing Pt, Rh, Ni, and Ce was studied. And the results indicated that aging the catalyst causes a loss of oxygen storage capacity due to sintering of the ceria particles.
Journal ArticleDOI
Influence of Mutual Platinum-Dispersed Ceria Interactions on the Promoting Effect of Ceria for the CO Oxidation Reaction in a Pt/CeO2/Al2O3 Catalyst
TL;DR: In this paper, the authors show that the low-temperature reducibility of both platinum and dispersed ceria is enhanced when the two components are present in the catalyst, and the most reducible sites are formed by platinum located on bidimensional ceria patches present at the alumina surface.
Journal ArticleDOI
CO oxidation over Pt/CoOx/SiO2 catalyst : a study using temporal analysis of products
TL;DR: In this paper, the authors used the technique of temporal analysis of products to obtain information on the mechanism of high activity of Pt/CoOx/SiO2 catalysts for CO oxidation below 100°C.
Journal ArticleDOI
Co-oxidation of CO and propylene on Pd/CeO2-ZrO2 and Pd/Al2O3 monolith catalysts: A light-off, kinetics, and mechanistic study
TL;DR: In this paper, the light-off (ignition) and steady-state behavior for individual oxidation and co-oxidation of CO and propylene under near-stoichiometric conditions was studied using Pd/Al 2 O 3 and pd/CeO 2 -ZrO 2 monolith catalysts.
References
More filters
Book
Chemical Reaction Engineering
TL;DR: An overview of Chemical Reaction Engineering is presented, followed by an introduction to Reactor Design, and a discussion of the Dispersion Model.
Journal ArticleDOI
Comparative kinetic studies of CO$z.sbnd;O2 and CO$z.sbnd;NO reactions over single crystal and supported rhodium catalysts
TL;DR: In this paper, the kinetics of the CO-O2 and CO-NO reactions over single crystal Rh(111) and over alumina-supported Rh catalysts have been compared at realistic reactant pressures.
Journal ArticleDOI
The oxidation of CO and hydrocarbons over noble metal catalysts
TL;DR: In this paper, the authors studied the reaction kinetics of CO, C 3 H 6, 1-hexene, and toluene under excess O 2 and found that the olefin oxidation is strongly self-inhibited by HC and more than first-order in O 2, whereas the opposite was found for Rh.
Journal ArticleDOI
Adsorption and reaction of nitric oxide and oxygen on Rh(111)
TL;DR: In this paper, the saturation coverage of NO on Rh(111) is approximately 0.67 of the surface atom density and saturation coverage ratio of atomic oxygen is approximately 2.83 times the surface density.
Journal ArticleDOI
Reduction of NO by CO over silica-supported rhodium: infrared and kinetic studies
William C. Hecker,Alexis T. Bell +1 more
TL;DR: In this article, the specific activity for NO reduction was found to be sensitive to the nature of the catalyst pre-treatment, and the rate-limiting step in this model was assumed to be the dissociation of chemisorbed NO.