Effects of the preparation methods on the performance of the Cu-Cr-Fe/γ-Al2O3 catalysts for the synthesis of 2-methylpiperazine

被引：13

作者：

Bai, Guoyi ^{[1
]}

Fan, Xinxin ^{[1
]}

Wang, Hailong ^{[1
]}

Xu, Jianzhong ^{[1
]}

He, Fei ^{[2
]}

Ning, Huisen ^{[1
]}

机构：

[1] Hebei Univ, Coll Chem & Environm Sci, Baoding 071002, Hebei, Peoples R China

[2] Tianjin Univ, Sch Chem Engn, Tianjin 300072, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2009年 / 10卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Preparation method; Cu-Cr-Fe/gamma-Al2O3; 2-Methylpiperazine; Ultrasonic sol-gel; Copper migration; AMINO-ALCOHOLS; CYCLIC AMINES; CO OXIDATION; COPPER-OXIDE; CYCLOHEXANONE; BEHAVIOR;

D O I：

10.1016/j.catcom.2009.07.025

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Co-precipitation, impregnation and ultrasonic sol-gel (USG) methods have been used to prepare Cu-Cr-Fe/gamma-Al2O3 Catalysts, which were further used to synthesize 2-methylpiperazine. The catalysts were characterized by XRD, XPS, TG/DSC, BET, TPR, AAS and TEM. It is found that preparation method can greatly impact the catalytic performance of the catalysts, the Cu-Cr-Fe/gamma-Al2O3 catalyst prepared by the ultrasonic sol-gel method proved to be the most active and stable for this reaction. The dispersion and stabilization of Cu-o in the reduced catalysts are attributed to the existence of CuCr2O4 and Fe2O3. A surprising copper migration was detected by XPS analysis for the Cu-Cr-Fe/gamma-Al2O3-USG catalyst after the calcination process, which may be crucial to the high activity and stability of this catalyst. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2031 / 2035

页数：5

共 18 条

[1]

Influence of the preparation method on the performance of CuO-CeO2 catalysts for the selective oxidation of CO [J].