合成气在K－Fe－MnO／Silicalite－2催化剂上转化为低碳烯烃的研究Ⅲ．粘结剂的作用  

Production of light alkenes from syngas over K-Fe-MnO/Silicalite-2 catalyst Ⅲ. Effects of binders

作　　者：徐龙伢[1] 王清遐[1] 徐奕德[1] 杨力[1] 赵修松[1] 

机构地区：[1]中国科学院大连化学物理研究所

出　　处：《天然气化工—C1化学与化工》1995年第3期25-29,共5页Natural Gas Chemical Industry

基　　金：国家"八.五"重点科技攻关课题

摘　　要：通过高温焙烧降低Ａｌ２Ｏ３的酸度，可减弱催化剂表面乙烯的副反应，研制出具有高强度、好性能的合成气转化为低碳烯烃的催化剂。研究表明，Ａｌ２Ｏ３的酸性导致催化剂表面乙烯发生深度二次反应，致使ＣＯ加氢生成饱和烃及烯烃的选择性降低。K-Fe-MnO/Silicalite-2 catalyst having Al2O3 as a binder is developed,exhibiting better strength and desirable behavior for production of light alkenes from synthesis gas. By calcining the catalyst support at a high temperature,the acidity of the catalyst can be decreased and side reactions of ethylene on the catalyst surface prohibited. It is found that the acidity of Al2O3 would bring about secondary reactions of ethylene over the catalyst and CO hydrogenation to saturated hydrocarbons,thus leading to a decrease of the selectivity to light olefins.

关 键 词：合成气 烯烃 催化剂 分子筛 粘结剂 铁 氧化锰 

分 类 号：TE665.3[石油与天然气工程—油气加工工程] O643.36[理学—物理化学]