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机构地区:[1]东北师范大学化学系
出 处:《化学研究与应用》1995年第4期341-350,共10页Chemical Research and Application
摘 要:杂多化合物在各个研究领域中的实际应用日趋广泛。特别是在催化领域内,对杂多化合物催化性能的研究越来越引起人们的关注。本文对在均相和非均相体系中杂多化合物的酸催化的最新研究成果和应用进行了综述,对杂多化合物的酸行为进行了简要的概括,并介绍了作者在这方面的工作。Recent studies on acid catalyses of heteropoly compounds in both homogeneous and heterogeneoussystems are reviewed.Acid ptoperties of heteroplycompounds are briefly summarized. Applications of heteropolyacids to homogeneous reactions under acidcatalysis such asplymerization of tetrahydrofuran,glucoside synthesis, and aldehyde trimeriration are interesting.Inheterogeneous system,an insoluble acidic Cs salt, Cs_(2.5)H_(0.5)PW_(12)O_(40) is much more reactive for Liquidphase alkylation than Nafion,HY-zeolite,H-ZSM-5 and So/ZrO_2.Pseudoliquid phase behavior ofH_3 PW_(12)O_(40) displays a high activity for alkylation of phenol. Finally,catalyses of novel types of complexes with organometallics and combination system withtransition metals are described with respect to ox idation of olefins f hydroformalation and reductivecarbonylation.
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