摘要
研究了在Ｃｒ２Ｏ３／Ａｌ２Ｏ３中添加Ｋ２Ｏ对异丁烷催化脱氢反应的影响。实验结果表明，Ｋ２Ｏ的加入可使催化剂活性和选择性得到明显提高。Ｋ２Ｏ的作用除了增加脱氢中心Ｃｒ３＋的浓度外，还使反应历程发生了改变，从而抑制了裂解和芳构化副反应的发生，提高了异丁烯的选择性。
ffects of K2O addition on isobutane dehydrogenation over Cr2O3/Al2O3 system were investigated. Important improvement of catalyst performance was observed both in activity and selectivity. The results may be interpreted in terms of the increase of active site concentration and the change of reaction pathway.The latter suppresses side reactions such as cracking and aromatization,thereby leading to an increase of isobutene selectivity.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
1995年第3期22-24,共3页
Natural Gas Chemical Industry
关键词
丁烷
催化
脱氢
碱助剂
氧化钾
isobutane
dehydrogenation isobutene
K_2O promotor
K_2O-Cr_2O_3/Al_2O_3
