Pt/TiO2催化剂微乳液法制备条件对邻氯硝基苯选择性加氢性能的影响

石油炼制与化工 ›› 2012, Vol. 43 ›› Issue (4): 30-33.

Pt/TiO2催化剂微乳液法制备条件对邻氯硝基苯选择性加氢性能的影响

宋华¹,董海鑫¹,李峰¹,汪淑影²

1. 东北石油大学化学化工学院
2. 同煤广发化学工业有限公司

收稿日期:2011-09-13 修回日期:2011-10-08 出版日期:2012-04-12 发布日期:2012-03-29
通讯作者: 宋华 E-mail:songhua@nepu.edu.cn

EFFECT OF PREPARATION CONDITIONS BY MICROEMULSION METHOD ON THE ACTIVITY OF Pt/TiO2 CATALYST DURING SELECTIVE HYDROGENATION OF o-CHLORONITROBENZENE

Received:2011-09-13 Revised:2011-10-08 Online:2012-04-12 Published:2012-03-29

摘要/Abstract

摘要： 采用十六烷基三甲基溴化铵/正丁醇/环己烷/H2PtCl6溶液的微乳体系，以N2H4?H2O为还原剂、TiO2为载体制备Pt/TiO2催化剂。以邻氯硝基苯选择性加氢反应为探针反应，考察微乳液组成及TiO2晶型对催化剂选择性加氢活性的影响。结果表明：当微乳体系中mCTAB:m正丁醇＝3:7、(mCTAB+m正丁醇):m环己烷＝3:7、H2PtCl6溶液用量占体系质量的3.6%时，制备的Pt/TiO2催化剂的邻氯硝基苯选择性加氢活性最高；锐钛矿型TiO2有助于提高催化剂的活性。

Abstract: Pt/TiO2 catalyst was prepared by microemulsion system of CTAB/butarol/cyclohexane/H2PtCl6 using hydrazine as reductant and TiO2 as support. The effect of microemulsion compositions and the crystalline state of TiO2 on the activities of Pt/TiO2 catalysts for selective hydrogenation was studied using o-chloronitrobenzene (o-CNB) selective hydrogenation as a probe reaction. The results showed that Pt/TiO2 catalyst having the highest activity in selective hydrogenation of o-CNB was prepared from a microemulsion system with mCTAB:mbutarol=3:7, (mCTAB+mbutarol):mcyclohexane=3:7 and the amount of H2PtCl6 solution occupied 3.6% of the total system mass. Furthermore, the study of crystalline states revealed that anatase type TiO2 was helpful to enhance the catalytic activity of Pt/TiO2 catalyst.

宋华董海鑫李峰汪淑影. Pt/TiO2催化剂微乳液法制备条件对邻氯硝基苯选择性加氢性能的影响[J]. 石油炼制与化工, 2012, 43(4): 30-33.