Catalyst Deactivation 1987 - 1st Edition - ISBN: 9780444428554, 9780080960685

Catalyst Deactivation 1987, Volume 34

1st Edition

Editors: G.F. Froment B. Delmon
eBook ISBN: 9780080960685
Imprint: Elsevier Science
Published Date: 1st September 1987
Page Count: 660
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Table of Contents

(Abbreviated Titles). Coking of reforming catalysts. Models for sintering of supported metal catalysts. Deactivation of molybdenum catalysts by deposits during hydrotreating of coal-derived liquids and heavy petroleums. CoMo HDS catalysts. Mechanisms of nickel catalyst poisoning. Poisoning of hydrogenation catalysts. Carbon poisoning of Pt/SiO2 catalysts. Coking on bifunctional catalysts. Deactivation on Pt/Al2O3 and Sn-Pt/Al2O3 catalysts in n-hexane conversion. Deactivation of AgxSbyOz/SiO2 for the condensation of isobutene and formaldehyde. Deactivation of V2O5 - TiO2 for the oxidation of o-xylene to phthalic anhydride. Deactivation of alkali promoted magnesia in oxidative coupling of methane. Platinum reforming catalysts. Effect of rare earth on the carbon deposition on nickel catalyst. Prevention of growth of filamentary carbon in supported iron and nickel catalysts. Copper catalysts for the hydrolysis of acrylonitrile. Deactivation of catalysts in 1-butanol dehydration. Role of cobalt and nickel added to molybdenum-alumina in hydrotreating catalysts. Poisoning of hydrodesulfurization catalysts by vanadium. Mild hydrocracking. Coking of iron sulfide catalysts during hydroliquefaction of coal. Deactivation of Claus tail-gas treating catalysts. Characterization of carbonaceous compounds responsible for zeolite deactivation. Deactivation of platinum catalysts by electrochemical methods. Coke deposition on HZSM-5 zeolites. Reactor performance under conditions of pore-diffusion-limited catalyst deactivation. Stochastic modeling of catalyst deactivation by site coverage. Effects of intraparticle diffusion resistance and catalyst deactivation. Temperature programmed oxidation as an analysis technique for deactivated hydrotreating catalysts. High-pressure gravimetric study of carbon formation during CO hydrogenation over Fe/Al2O3. Acceleration of deactivation of Ag catalyst by periodic pulse technique for estimation of catalyst life. ``Stopped-flow desorption'' analysis of adsorbed species during n-butane oxidation in a flow reactor. Catalyst deactivation studies by a concentration-controlled recycle reactor. Promoter deactivation of platinum group metals promoted cracking catalysts. Optimal catalyst distribution in pellets with shell progressive poisoning. Accumulation of C, Fe and Ti foulants in coal liquefaction catalysts. Coke forming reactions during methanol conversion on zeolite catalysts. Coke deposition on Y-zeolites in methylnaphthalene isomerisation. Deactivation and reactivation of zeolite hydrocracking catalyst for residual oil. Mechanisms for thiophene poisoning of nickel catalysts. Effect of partial reduction on the thioresistance of Ni/Al2O3 catalysts. Deactivation of a supported copper catalyst in the industrial aniline plant. Structure sensitive deactivation of supported palladium catalysts. Role of crystallite structure on mechanisms of coke and sulphur poisoning. Carbonaceous deposits on zeolites during the conversion of polynuclear aromatics. Oxygen induced fouling in a xylene isomerization reactor bed. Coke formation mechanism from olefins or diolefins. Deactivation and stabilization of transition metal zeolite catalysts for acetylene hydration. High steam stability of ZSM-5 zeolites containing alkaline earth metals. Poisoning and passivation of ammonia synthesis catalyst. Control of catalyst deactivation caused by coking in methanol to aromatics conversion on Ga- and Zn-ion-exchanged H-ZSM-5 by addition of other alcohols. Effects of coke formation and removal on the acidity of ZSM-5. Author Index.


This Symposium on Catalyst Deactivation ensues those held at Berkeley (1985), Antwerp (1980) and Berkeley (1978).

The three main topics emphasised at this most recent symposium were: the techniques used in deactivation studies, the mechanisms of catalyst deactivation, and modelling. With respect to the first, it became apparent that the study of deactivation faces even more difficulties than the characterization of fresh catalysts and the measurement of activity or selectivity, due to the multiplicity of interacting processes occurring during deactivation. Quite substantial progress has been made recently in the understanding of the mechanisms of various deactivation processes, particularly coking, and extra time was accorded to these topics at the symposium. The third topic corresponds to a problem which is very central to development studies and to the chemical engineering aspect of catalysis: it deals with the representativity of accelerated tests and the modelling of the deactivation phenomena.


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© Elsevier Science 1987
Elsevier Science
eBook ISBN:

About the Editors

G.F. Froment Editor

Affiliations and Expertise

Laboratorium voor Petrochemische Techniek, Universiteit Gent, Ghent, Belgium

B. Delmon Editor