摘要
报导了ＺＳＭ－５型分子筛催化剂对正丁烯选择异构化反应的催化性能，利用ＸＲＤ、ＳＥＭ、ＩＲ等方法对催化剂进行了表征，并应用原位红外技术对反应分子丁烯－２在催化剂表面上的吸附，反应行为进行考察．催化剂性能评价结果表明ＺＳＭ－５型分子筛催化剂对此反应具有较好的催化活性和选择性．用碘对其进行改性，可有效地改善催化剂的催化性能．
A series of zeolite ZSM-5 as catalysts for the selective isomerization reaction of n- butene were studied.The results show that zeolite ZSM- 5 catalysts have good activity and selectivity to this reaction. The zeolite ZSM-5 catalyst modified by Ⅰ can enhance the activity for this reaction.Structural characterization demonstrated that a part of skeletal structure of ZSM-5 catalyst modified by Ca is destroyed. The adsorption and reaction of 2- butene on zeolite ZSM-5 catalyst were studied by infrared spectroscopy.2-butene can be adsorbed on the catalyst.With the increase of temperature 1 butene can be detected on the surface of catalyst.It is dissociatively adsorbed on the catalyst. Then,isobutene and propene can be found by GC, they can not be adsorbed on the catalyst.
出处
《分子催化》
EI
CAS
CSCD
1994年第3期225-231,共7页
Journal of Molecular Catalysis(China)
关键词
分子筛
催化剂
选择
异构化
丁烯
Zeolite ZSM- 5 catlyst, Selective isomerization, Butene
