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Abstract:
考察了Mn系钙钛矿型催化剂La_(1-x)Sr_xMn_(1-y)Me_yO_3(x=0,0.1,0.2,0.3,0.4;y=0,0.2,0.4,0.6)对CO完全氧化的催化活性及耐SO_2性,用TPR方法研究了催化剂的可还原性,用FTIR研究了SO_2在催化剂表面上的吸附,结果表明:Mn系钙钛矿型催化剂按吸附机理催化CO为CO_2,B位低价态Mn离子越多,催化剂吸附氧能力越强,TPR温度越低,催化剂可还原性越大,催化活性越好;反之,相反,SO_2强吸附在B位Mn离子上,使催化剂吸附氧能力消失造成催化剂不可逆失活。
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Source :
北京工业大学学报
Year: 1992
Issue: 01
Page: 83-88
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 8
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