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dc.contributor.authorZhang, QH
dc.contributor.author张庆红
dc.contributor.authorWang, Y
dc.contributor.author王野
dc.contributor.authorItsuki, S
dc.contributor.authorShishido, T
dc.contributor.authorTakehira, K
dc.date.accessioned2012-05-10T02:55:24Z
dc.date.available2012-05-10T02:55:24Z
dc.date.issued2002-08-28
dc.identifier.citationJOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2002,188(1-2):189-200zh_CN
dc.identifier.issn1381-1169
dc.identifier.urihttp://dx.doi.org/10.1016/S1381-1169(02)00323-0
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/12332
dc.description.abstractMn-MCM-41 is found to be the most effective heterogeneous catalyst for the epoxidation of styrene with tert-butyl hydroperoxide (TBHP) among several metal ion-containing mesoporous molecular sieves including Mn-, V-, Cr-, Fe-, and Mo-MCM-41. ESR, XANES, diffuse reflectance UV-VIS, UV-Raman and XPS are used to characterize the Mn-MCM-41 synthesized by both direct hydrothermal (DHT) and template ion exchange (TIE) methods. The results suggest that Mn2+ and Mn3+ coexist in the Mn-MCM-41 samples synthesized by both methods and a large part of manganese atoms could be incorporated into the framework, of MCM-41 obtained by the DHT method. The oxidation of either styrene or stilbene with TBHP as the oxidant over the Mn-MCM-41 produces corresponding epoxide as the main products the reaction probably proceeds through a radical intermediate. The TIE catalyst shows higher activity, while the DHT catalyst gives higher TBHP efficiency for the epoxidation reactions. (C) 2002 Elsevier Science B.V. All rights reserved.zh_CN
dc.language.isoenzh_CN
dc.publisherELSEVIER SCIENCE BVzh_CN
dc.subjectMn-MCM-41zh_CN
dc.subjectepoxidationzh_CN
dc.subjecttert-3utyl hydroperoxidezh_CN
dc.subjectstyrenezh_CN
dc.subjectstilbenezh_CN
dc.titleManganese-containing MCM-41 for epoxidation of styrene and stilbenezh_CN
dc.typeArticlezh_CN


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