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OALib Journal期刊
ISSN: 2333-9721
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沉淀及老化温度对浆态床合成甲醇cuo/zno/al2o3催化剂活性及稳定性的影响
, PP. 569-575
Keywords: 浆态床反应器,cuo/zno/al2o3催化剂,稳定性,沉淀温度,老化温度
Abstract:
？利用浆态床反应器,考察了沉淀及老化温度对cuo/zno/al2o3催化剂催化合成甲醇的活性及稳定性的影响,并用xrd、bet、ft-ir以及xps等技术对前驱体及催化剂进行了表征。结果表明,前驱体物相主要以孔雀石(cu2(co3)(oh)2)和类孔雀石((cu,zn)2(co3)(oh)2)为主,其中,70℃沉淀和80℃老化条件下制备的前驱体具有适当的结晶度,焙烧后的催化剂中cuo分布均匀,cu元素的电子结合能位移最大,cuo与zno之间作用较强,催化剂的性能最佳,时空收率和失活率分别达到了153.3g/(kgcat·h)和1.44%/d。
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