摘要
在Ｓｉｌｉｃａｌｉｔｅ－２分子筛担载的Ｋ－Ｆｅ／Ｓｉ－２催化剂体系中添加ＭｎＯ助剂，可明显提高ＣＯ／Ｈ２转化为低碳烯烃的选择性及催化活性。ＭｎＯ助剂能促进Ｋ－Ｆｅ／Ｓｉ－２催化剂中铁的还原，增加催化剂表面活性中心位，从而提高催化剂对ＣＯ的吸附容量，提高催化剂活性；ＭｎＯ助剂能抑制催化剂表面乙烯、丙烯加氢反应，从而有利于提高低碳烯烃选择性。
atalytic activity and selectivity of the KFe catalyst supported on silicalite-2 zeolite for production of light alkenes from CO/H2 can be obviously improved by adding MnO promoter to the catalyst. MnO promotes the reduction of Fe and increases surface active sites,resulting in an increase of CO adsorption capacity and catalyst activity.Moreover,MnO can prohibit the hydrogenation of C2H4 and C3H6,which is favorable for enhancing selectivity toward light alkenes from CO hydrogenation.
出处
《天然气化工—C1化学与化工》
CSCD
北大核心
1995年第1期14-18,共5页
Natural Gas Chemical Industry
基金
国家"八五"重点科技攻关课题
关键词
分子筛
合成气
烯烃
催化剂
助剂
氧化锰
铁
钾
Silicalite-2 zeolite
syngas
light alkene
Fe-MnO catalyst
MnO promoter
