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OALib Journal期刊
ISSN: 2333-9721
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co/hβ催化剂上n2o的分解性能研究
, PP. 877-883
Keywords: n2o,催化分解,钴,h&beta,分子筛,焙烧温度
Abstract:
？采用浸渍法制备了hβ分子筛负载钴氧化物催化剂。考察了催化剂焙烧温度和钴负载量对催化剂催化分解n2o活性的影响，并采用xrd、nh3-tpd、h2-tpr、sem等手段对催化剂的理化性质进行表征。结果表明，催化剂中的钴物种主要以co3o4尖晶石型形态存在；催化剂焙烧温度显著影响其酸性和酸量及氧化还原性能，焙烧温度达到700℃后，催化剂中有难还原的co-al-o物种生成。焙烧温度和钴负载量对催化剂的催化活性均有影响，焙烧温度为600℃、钴负载量为10%~15%的催化剂催化活性好，n2o分解温度低，t10、t50和t95分别为325~329℃、364~367℃和406~408℃。
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