亲有机聚苯乙烯-蒙脱土负载铵盐的合成及其在有机反应中的应用

Q4 Chemical Engineering

分子催化 Pub Date : 1994-12-15 DOI:10.1016/0304-5102(94)00146-4

A. Akelah , A. Rehab, A. Selim, T. Agag

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引用次数: 22

摘要

采用阳离子交换法将含2%铵盐基团的苯乙烯和氯甲基苯乙烯共聚物接枝到蒙脱土夹层上。其余的氯甲基被修饰成磷酸盐。研究了聚苯乙烯蒙脱土负载的磷基团在硫氰酸盐和亚硝酸盐亲核反应中的催化活性。在影响反应速率的几个因素(如聚合物主链的化学组成、活性部分的化学性质、负载程度、溶剂性质和反应温度)的影响下，考察了这些催化剂的有效性。

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Synthesis and application of organophilic polystyrene-montmorillonite supported onium salts in organic reactions

Copolymers of styrene and chloromethylstyrene containing 2% ammonium salt groups have been grafted onto montmorillonite interlayers by cation exchange process. The remaining chloromethyl groups were modified to produce phosphonium salts. The catalytic activities of the phosphonium moieties supported on polystyrene-montmorillonite have been investigated in thiocyanate and nitrite nucleophilic reactions. The effectiveness of these catalysts has been examined under the effects of several factors governing the reactions rates such as the chemical composition of polymers backbone, chemical nature of the active moiety, degree of loading, nature of the solvent, and reaction temperature.

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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.