中文摘要：

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~-67℃和406-408℃。

英文摘要：

The catalyst of cobalt oxide supported on I-It zeolite （Co/lift） was prepared by impregnation method and characterized by XRD, H2-TPR, NH3-TPD, and SEM. The effects of calcination temperature and cobalt loading on the catalytic performance of Co/I-It in N20 decomposition were investigated. The results showed that cobalt species are present mainly in the form of Co3 04 spinel oxide. The acidity, acid amount and redox property of the Co/I-I~ catalyst were significantly affected by the calcination temperature; the Co-Al-O species that is difficult to reduce by hydrogen is formed at a calcination temperature over 700 ℃. The catalytic activity of the Co/I-It catalyst was affected by the calcintion temperature and cobalt loading. The Co/Hfl catalyst calcined at 600 ℃ and with a cobalt loading of 10% - 15% exhibits excellent catalytic activity in N20 decomposition; the temperatures/10, t50 and /95 for N20 decomposition are 325 - 329 ℃, 364 -367℃, and 406 - 408 ℃, respectively.