Description

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.

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/Al2

Details

No. of pages:
660
Language:
English
Copyright:
© 1987
Published:
Imprint:
Elsevier Science
Electronic ISBN:
9780080960685
Print ISBN:
9780444428554

About the editors