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标题：LEAN CARBON MONOXIDE COMBUSTION OVER A Pd/Ce/La CATALYST IN A CATALYTIC REVERSE FLOW REACTOR
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作者：Wen Jun Liang ; Si da Ren ; Yu ze Li 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2018
卷号：27
期号：12
页码：8297-8307
语种：English
出版社：PSP Publishing
摘要：A catalytic reverse flow reactor was employed for the combustion of lean carbon monoxide in air mixture. The catalytic combustion of CO over a Pd mixed oxide supported on cordierite coated with Ce/La was investigated. The catalysts were prepared using a sol-gel method and characterized using BET and SEM. The elTects of Pd content, preheated temperature, calcination temperature and calcination time on catalyst pcrfonnancc were studied. Furthennore, the perfonnances of the reactor such as pressure drop and bed temperature distribution were investigated. The catalysts calcined at 550°C for 3 h with Pd content being 2.5 wt% exhibited the highest catalytic activity. The conversion attained 90% when the switch time was 8 mi1L_ the GHSV was 800011", and the initial concentration was l00ppm. The pressure drop of the system was small when the GHSV was lower than 1000011". The initial preheating temperature of the catalyst had a greater influence on the temperature distribution in the reactor.
关键词：Carbon monoxide;reverse flow;catalytic combustion;Pd monolithic catalyst;rare earth metal