Magnetic Fe3O4@MgAl-LDH composite grafted with cobalt phthalocyanine as an efficient heterogeneous catalyst for the oxidation of mercaptans

被引：49
作者：
Kumar, Pawan [1 ]
Gill, Kareena [2 ]
Kumar, Sunil [2 ]
Ganguly, Sudip K. [2 ]
Jain, Suman L. [1 ]
机构：
[1] CSIR, Div Chem Sci, Indian Inst Petr, Dehra Dun 248005, India
[2] CSIR, Refining Technol Div, Indian Inst Petr, Dehra Dun 248005, India
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2015年 / 401卷
关键词：
Sweetening; Oxidation; Cobalt phthalocyanine; Immobilized catalys; Magnetically separable catalyst; LAYERED DOUBLE HYDROXIDE; SOLID-BASE CATALYSTS; RUTHENIUM HYDROXIDE; SEPARABLE CATALYST; AEROBIC OXIDATION; ACTIVE CATALYST; GRAPHENE OXIDE; NANOPARTICLES; DISULFIDES; THIOLS;
D O I：
10.1016/j.molcata.2015.03.001
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Magnetically separable layered double hydroxide MgAl-LDH@Fe3O4 composite supported cobalt phthalocyanine catalyst was synthesized and used for the aerobic oxidation of mercaptans to corresponding disulfides under alkali free conditions. The catalyst exhibited excellent activity for the oxidation of mercaptans using molecular oxygen as an oxidant which can be effectively recovered by using an external magnetic field. In addition, the covalent immobilization of cobalt phthalocyanine to MgAl-LDH@Fe3O4 support prevents the leaching of the catalyst and improves its activity and stability. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：48 / 54
页数：7
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