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

Q4 Chemical Engineering
A. Akelah , A. Rehab, A. Selim, T. Agag
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引用次数: 22

Abstract

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.

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
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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来源期刊
分子催化
分子催化 Chemical Engineering-Catalysis
CiteScore
1.50
自引率
0.00%
发文量
2959
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