Preparation of CexZr1-x-AI mixed oxides and investigation of the palladium-only three-way catalytic performance(耐高温高比表面CexZr1-x-Al复合氧化物的制备及其单Pd型三效催化性能的研究)

YANGChun-qing(杨春清); ZHOURen-xian(周仁贤); LIZhen-guo(李振国)

doi:10.3785/j.issn.1008-9497.2008.04.016

Zhejiang Daxue xuebao. Lixue ban (Jul 2008)

Preparation of CexZr1-x-AI mixed oxides and investigation of the palladium-only three-way catalytic performance(耐高温高比表面CexZr1-x-Al复合氧化物的制备及其单Pd型三效催化性能的研究)

YANGChun-qing(杨春清),
ZHOURen-xian(周仁贤),
LIZhen-guo(李振国)

Affiliations

YANGChun-qing(杨春清): Institute of Catalysis, Zhejiang University, Hangzhou 310028, China(浙江大学催化研究所，浙江杭州 310028)
ZHOURen-xian(周仁贤): Institute of Catalysis, Zhejiang University, Hangzhou 310028, China(浙江大学催化研究所，浙江杭州 310028)
LIZhen-guo(李振国): Institute of Catalysis, Zhejiang University, Hangzhou 310028, China(浙江大学催化研究所，浙江杭州 310028)

DOI: https://doi.org/10.3785/j.issn.1008-9497.2008.04.016
Journal volume & issue: Vol. 35, no. 4
pp. 428 – 432

Abstract

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利用溶胶-凝胶法和超临界干燥法相结合的技术制备了系列CexZr1-x-Al复合氧化物，采用BET、XRD等技术进行了表征，并研究了其负载Pd催化剂的三效性能.BET和XRD结果表明，CexZr1-x-Al复合氧化物具有良好的热稳定性，经1 100 ℃焙烧4 h后仍具有较大比表面积（>95 m2 • g-1），无α-Al2O3产生.TEM和催化剂活性评价表明，含有铈锆固溶体的负载Pd催化剂具有良好的催化活性和耐热稳定性，其中Pd/Ce0.75Zr0.25-Al的催化性能最好，CO、C3H6、NO和NO2的起燃温度（T20%）分别为140、268、340、175 ℃，经1 100 ℃焙烧4 h后对各气体组分的完全转化温度仅提高10~20 ℃.

Published in Zhejiang Daxue xuebao. Lixue ban

ISSN: 1008-9497 (Print)
Publisher: Zhejiang University Press
Country of publisher: China
LCC subjects: Science: Mathematics: Instruments and machines: Electronic computers. Computer science; Science: Physics
Website: https://www.zjujournals.com/sci/EN/1008-9497/home.shtml

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