Journal Article10.1016/S0926-860X(00)00843-7
Mechanisms of catalyst deactivation
TL;DR: The literature treating mechanisms of catalyst deactivation is reviewed in this paper, which can be classified into six distinct types: (i) poisoning, (ii) fouling, (iii) thermal degradation, (iv) vapor compound formation accompanied by transport, (v) vapor solid and/or solid solid reactions, and (vi) attrition/crushing.
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Abstract: The literature treating mechanisms of catalyst deactivation is reviewed. Intrinsic mechanisms of catalyst deactivation are many; nevertheless, they can be classified into six distinct types: (i) poisoning, (ii) fouling, (iii) thermal degradation, (iv) vapor compound formation accompanied by transport, (v) vapor-solid and/or solid-solid reactions, and (vi) attrition/crushing. As (i), (iv), and (v) are chemical in nature and (ii) and (v) are mechanical, the causes of deactivation are basically three-fold: chemical, mechanical and thermal. Each of these six mechanisms is defined and its features are illustrated by data and examples from the literature. The status of knowledge and needs for further work are also summarized for each type of deactivation mechanism. The development during the past two decades of more sophisticated surface spectroscopies and powerful computer technologies provides opportunities for obtaining substantially better understanding of deactivation mechanisms and building this understanding into comprehensive mathematical models that will enable more effective design and optimization of processes involving deactivating catalysts. © 2001 Elsevier Science B.V. All rights reserved.
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References
•Book
Chemistry of catalytic processes
Bruce C. Gates,James R. Katzer,George C. A. Schuit +2 more
- 01 Jan 1979
CO hydrogenation on a nickel catalyst. I: Kinetics and modeling of a low temperature sintering process
M. Agnelli,M. Kolb,C. Mirodatos +2 more
TL;DR: In this paper, a Ni/SiO2 catalyst was studied under methanation conditions, and the loss of metallic surface, accounting for the catalyst deactivation, was shown to come from the migration of nickel subcarbonyl adspecies formed during the reaction.
•Book
Activation, Deactivation, and Poisoning of Catalysts
John B. Butt,Eugene E. Petersen +1 more
- 01 Aug 1988
TL;DR: In this article, the authors have combined many years of experiment in both research and teaching into the organization and writing of this book, which has been organized into three parts: Part I details the deactivation of catalytic surfaces with emphasis on microscopic processes, Part II emphasizes catalyst deactivation through macroscopic processes, and Part III outlines global processes in connection with the regeneration of fixed-bed reactors.
Effect of Porosity on Physical Properties of Sintered Alumina
Robert L. Coble,W. D. Kingery +1 more
TL;DR: In this paper, the effects of porosity and temperature on strength, elastic modulus, modulus of rigidity, and coefficient of thermal expansion were investigated for a continuous solid phase with isolated pores.