物理化学学报 >> 1997, Vol. 13 >> Issue (01): 79-82.doi: 10.3866/PKU.WHXB19970117

研究简报 上一篇    下一篇

助剂钾添加方式对多乙苯脱氢催化性能的影响

宋蔚,梁珍成,秦永宁   

  1. 天津化学工业学校,天津 300402|天津大学化学工程系,天津 300072
  • 收稿日期:1996-04-11 修回日期:1996-10-20 发布日期:1997-01-15

Influence of the Method of Adding Potassium Promoter on Catalyst for Dehydrogenation of Diethylbenzene

Song Wei,Liang Zhen-Cheng,Qin Yong-Ning   

  1. College of Tianjin Chemical Engineering,Tianjin 300402|Department of Chemical Engineering of Tianjin University,Tianjin 300072
  • Received:1996-04-11 Revised:1996-10-20 Published:1997-01-15

关键词: 脱氢催化剂, 钾霞石, 反应活性, 多乙苯

Abstract:

 The catalyst for dehydrogenation of diethylbenzene(DEB) to divinylbenzene(DVB) was studied. Potassium-promoted iron oxide catalyst was mainly used for ethylbenzene dehydrogenation. If potassium alkli or salt was used directly as promoter, it was noted that the loss of potassium component from the surface of the catalysts pellet result in deactivation. When potassium promoter was added as kaliophilite(KAlSiO4). It was shown that the latter way of adding potassium promoter not only keeps the depression of carbonaceous deposits but also controls the loss of potassium component(the value of loss of potassium component has been reduced three times) , thus making the catalyst having a higher dehydrogention activity.

Key words: Dehydrogenation catalyst, Kaliophilite, Reactivity, Diethylbenzene