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- W2358442021 abstract "A variety of polymeric phase transfer catalysts with quaternary ammonium active center was synthesized by means of quarterisation of tertiary amine and chloromethylated polystyrene polymer.The effects of catalyst structure on the catalytic activity were examined in the ethoxylated reaction of o-nitrochlorobenzene,ethanol and sodium hydroxide.The experimental results show that the observed reaction rate constant(k__(obsd)) is increased with the degree of cross-linking or/and particle size of polymer decreased,high speed stirring makes for external diffusion but it may be ignored as revolution ≥700 r/min.The lipophilicity of alkyl chain on quaternary ammonium group also showed much influence on k__(obsd) with the same degree of cross-linking and particle size of polymer.The catalytic activity was increased while the lipophilicity increased,this is the reason why ion exchange progress become opposite easy.The yield of coarse o-nitrophenetol is(93.6%),and purity of production is(97.4%).The purity of production reaches(99.5%) after distillation separate.The structure of production was proofed by IR." @default.
- W2358442021 created "2016-06-24" @default.
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- W2358442021 date "2005-01-01" @default.
- W2358442021 modified "2023-09-25" @default.
- W2358442021 title "STUDY ON ETHOXYLATED REACTION OF O-NITROCHLOROBENZENE WITH POLYMERIC PHASE TRANSFER CATALYST" @default.
- W2358442021 hasPublicationYear "2005" @default.
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