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低浓度甲烷甲醇深度氧化Ag/La_(0.6)Sr_(0.4)MnO_3催化剂
Authors
张鸿斌
林国栋
熊智涛
王伟
Publication date
30 April 2000
Publisher
Abstract
用柠檬酸溶胶 凝胶法制备钙钛矿型La0.6Sr0.4MnO3 氧化物,并用Ag对其进行修饰,制得Ag/La0.6Sr0.4MnO3 系列催化剂.结果表明 ,6 %Ag/La0.6Sr0.4MnO3 催化剂上甲烷或甲醇氧化转化95 %时的反应温度T95 可低至735K(对CH4)或421K(对CH3OH);适量Ag的负载修饰并不改变催化剂基质氧化物La0.6Sr0.4MnO3 的纳米级钙钛矿型结构;Ag的掺杂诱使催化剂中部分Mn3 +氧化为Mn4 +;Ag组分与钙钛矿型氧化物基质La0.6Sr0.4MnO3 表面的相互作用促使该催化剂对甲烷或甲醇的完全氧化表现出高而稳定的催化活
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Last time updated on 16/06/2016