应用化学 ›› 1988, Vol. 0 ›› Issue (3): 89-91.

• 研究简报 • 上一篇    下一篇

邻氯甲苯在P-HZSM-5沸石催化剂上的异构化

赵振华   

  1. 湖南师范大学化学系, 长沙
  • 收稿日期:1987-06-15 修回日期:1987-08-20 出版日期:1988-06-10 发布日期:1988-06-10

ON THE ISOMERIZATION OF O-CHLOROTOLUENE OVER PHOSPHOR CONTAINING ZEOLITE CATALYST P-HZSM-5

Zhao Zhenhua   

  1. Department of Chemistry, Hunan Normal University, Changsha
  • Received:1987-06-15 Revised:1987-08-20 Published:1988-06-10 Online:1988-06-10

摘要: Olah等曾以氯化铝等作催化剂研究了邻氯甲苯的均相异构化.近年又有专利报道用氢型丝光沸石和HZSM-5沸石为催化剂使邻氯甲苯在≥20kg/cm2压力下异构化.为了有效地利用"杀草丹"生产过程中量大价廉的副产物邻氯甲苯,本文以P-HZSM-5沸石作催化剂,在常压流动微反-色谱装置上研究了邻氯甲苯的气-固相异构化反应.

关键词: 氯甲苯, 异构化, 沸石催化剂, 磷酸

Abstract: The common zeolite catalYst HZSM-5 is modified by treating with phosphoric acid to improve its reaction activity towards o-chlorotoluene isomerization. The reaction is carried out at atmospheric pressure and in a microreaetor with o-continuous flow of nitrogen gas. The modified catalyst P-HZSM-5 shows a higher activity in chlorotoluenxc isomerization and gives a higher yield of P-isomer than HZSM-5 under the same reaction conditions.

Key words: Isomerization, Chlorotolucne, Zeolite catalyst, Phosphoric acid