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OALib Journal期刊
ISSN: 2333-9721
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合成气一步法制备二甲醚核壳结构催化剂的制备及其反应性能
, PP. 1003-1009
Keywords: 核壳双功能催化剂,合成气,二甲醚
Abstract:
？以生物质(葡萄糖、蔗糖、淀粉)为模板剂,通过水热合成法制备具有核壳结构的cuo-zno-al2o3@al2o3复合催化剂,该催化剂以甲醇合成催化剂cuo-zno-al2o3为核,甲醇脱水催化剂al2o3为壳.sem-eds对催化剂核壳结构的表征发现,通过改变水热合成温度和合成时间可以调变催化剂中al2o3壳层的厚度.将该复合催化剂用于合成气直接制备二甲醚的反应,在空速1500ml/(h·gcat)、温度260℃、压力5.0mpa的条件下,co转化率和二甲醚选择性分别达到35.2%和61.1%.
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