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Abstract:
以SiC为载体,采用等体积浸渍法制备了Pt质量分数为1%的Pt/CeO2/SiC催化剂,采用x射线衍射、程序升温还原和CO化学吸附法对催化剂进行了表征.考察了CeO2添加量、焙烧温度、预还原温度等对Pt/CeO2/SiC催化剂催化CO氧化反应性能的影响.实验结果表明,添加助剂CeO:可显著提高催化剂表面活性组分Pt的分散度,且CeO2与Pt产生一定的相互作用,使催化剂活性显著提高;当Pt/CeO2/SiC催化剂中CeO2的质量分数为8%时,催化剂活性最高,CO的最低完全转化温度比Pt/SiC催化剂约低100℃;Pt/CeO2/SiC催化剂的最佳焙烧温度为500℃,最佳预还原温度为200℃.
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石油化工
ISSN: 1000-8144
CN: 11-2361/TQ
Year: 2008
Issue: 3
Volume: 37
Page: 300-304
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: -1
Chinese Cited Count:
30 Days PV: 3
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