Thiol-oxidation with zeolite encapsulated phthalocyanines: Influence of the solid support

被引:15
作者
ThibaultStarzyk, F
VanPuymbroeck, M
Parton, RF
Jacobs, PA
机构
[1] KATHOLIEKE UNIV LEUVEN,CTR SURFACE CHEM & CATALYSIS,B-3001 HEVERLEE,BELGIUM
[2] INST SCI MAT & RAYONNEMENT,CNRS,CATALYSE & SPECTROCHIM LAB,F-14050 CAEN,FRANCE
关键词
thiol oxidation; zeozyme; zeolites; encapsulation; phthalocyanine; hydrophobicity;
D O I
10.1016/1381-1169(96)00026-X
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
The catalytic activity of zeolite encapsulated cobalt-phthalocyanine for thiol autoxidation varies with the composition of the zeolite support. Different zeolites were compared with carbon supports, The Si/Al ratio in the zeolite appears to be the key factor: it determines the hydrophobicity of the support, and it influences the loading of active complex in the zeolite. Two different types of reaction were tested: in an aqueous alkaline medium, the activity increases with hydrophobicity of the support (thus giving carbon a substantial advantage), while in an organic medium, were the commonly used systems are less efficient, sodium Y zeolite is more active than the usual carbon support.
引用
收藏
页码:75 / 79
页数:5
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