摘要
用Ｃｕ（ＮＯ３）２对载体（γ－Ａｌ２Ｏ３）表面修饰后制成的负载型双金属铜促进催化剂进行了ＣＯ加氢反应研究。与未促进催化剂对比，铜助剂对生成低碳烃和提高ＣＯ转化率均有较强的促进作用。在２８０℃时，铜促进催化剂对生成低碳烃的选择性可达５９．４％，突破了Ｓｃｈｕｌｚ－Ｆｌｏｒｙ产物分布规律的限制。同时，还研究了铜促进催化剂的活性和选择性随反应温度、时间的变化规律。等离子发射光谱（ＩＣＰ）对铜促进催化剂的表征结果显示，铜促进催化剂有较高的金属（Ｆｅ＋Ｃｏ）负载量。
O hydrogenation has been studied over the γ-Al2O3-supported Fe-Co bimetallic cluster catalyst modified by Cu(NO3)2 which can significantly promote light olefin formation and CO conversion.The selectivity of the Cupromoted catalyst to. light olefins (C2-C4) at 280C is up to 59.4%,exceeding what is limited by the Schulz-Flory rule of product distributton. Variation of activity and selectivity of the Cu-promoted catalyst with treaction time and temperature has also been investigated.The results of ICP analysis show that the Cupromoted catalyst has a higher content of supported Fe+Co.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
1995年第1期23-26,共4页
Natural Gas Chemical Industry
基金
国家自然科学基金
关键词
铜
催化剂
加氢
多相催化
一氧化碳
Cu-promoted catalyst
CO hydrogenation
heterogeneous catalysis
