Catalytic activity of anchored vanadyl complexes

Q4 Chemical Engineering

分子催化 Pub Date : 1994-09-27 DOI:10.1016/0304-5102(94)00086-7

Rajinder Kaur Bhatia , G.N. Rao

引用次数: 10

Abstract

Vanadyl complexes anchored to polymers are effective as catalysts in the oxidation of sulfoxide to sulfone by tert-butyl hydroperoxide. To study the effect of ligand bound to vanadium in such catalytic reactions, vanadyl complexes of salicylaldoxime (a), 3-2(thenoyl-1,1,1-trifluoroacetone) (b) and (o-phenylene-bis-salicylimine) (c) were anchored to polymers and the effectiveness of the catalysts in the oxidation of dimethylsulfoxide and diphenylsulfoxide by tert.-butylhydroperoxide was investigated. The order of catalytic activity was a ≈ b > c in both cases. In the homogeneous systems using the same complexes, the order of catalytic activity was found to be b > c > a. The polymeric beads isolated at the end of oxidation reaction were used for successive runs and the catalytic activity was similar in the first three cycles. The results are discussed on the basis of structural features of the ligands and the reactants.

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锚定钒基配合物的催化活性

锚定在聚合物上的钒基配合物是过氧化叔丁基将亚砜氧化为砜的有效催化剂。为了研究与钒结合的配体在这种催化反应中的作用，将水杨醛肟(a)、3-2(壬基-1,1,1-三氟丙酮)(b)和(邻苯基-双水杨胺)(c)的钒基配合物固定在聚合物上，并研究了催化剂在叔特氧化二甲亚砜和二苯基亚砜中的效果。对-丁基过氧化氢进行了研究。催化活性的顺序为a≈b >两种情况都是C。在使用相同配合物的均相体系中，发现催化活性的顺序为b >c比;a.氧化反应结束时分离的聚合物珠连续运行，前三个循环的催化活性相似。根据配体和反应物的结构特征对结果进行了讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

分子催化 Chemical Engineering-Catalysis

CiteScore

1.50

自引率

0.00%

发文量

2959

期刊介绍： Journal of Molecular Catalysis (China) is a bimonthly journal, founded in 1987. It is a bimonthly journal, founded in 1987, sponsored by Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, under the supervision of Chinese Academy of Sciences, and published by Science Publishing House, which is a scholarly journal openly circulated both at home and abroad. The journal mainly reports the latest progress and research results on molecular catalysis. It contains academic papers, research briefs, research reports and progress reviews. The content focuses on coordination catalysis, enzyme catalysis, light-ribbed catalysis, stereochemistry in catalysis, catalytic reaction mechanism and kinetics, the study of catalyst surface states and the application of quantum chemistry in catalysis. We also provide contributions on the activation, deactivation and regeneration of homogeneous catalysts, solidified homogeneous catalysts and solidified enzyme catalysts in industrial catalytic processes, as well as on the optimisation and characterisation of catalysts for new catalytic processes. The main target readers are scientists and postgraduates working in catalysis in research institutes, industrial and mining enterprises, as well as teachers and students of chemistry and chemical engineering departments in colleges and universities. Contributions from related professionals are welcome.