Manganese Mono-Substituted Borotungstate: Characterization and Catalytic Application

Salete S.Balula; Isabel C.M.S.Santos; Andre D.S.Barbosa; Walkiria Schlindwein; Ana M.V.Cavaleiro; Baltazarde Castro; Luis Cunha-Silva

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Manganese Mono-Substituted Borotungstate: Characterization and Catalytic Application

机译：锰单取代的硼钨酸盐：表征与催化应用

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The Keggin-type TBA_4H_2[BW_(11)Mn(H_2O)O_(39)].H_2O (BW_(11)Mn) compound was isolated and characterized.The first sphere of coordination for the manganese atom was determined by EXAFS analysis.Six oxygen atoms were found in the range of 1.80-2.64 A from the manganese.BWnMn showed to be an active,efficient and selective catalyst for cw-cyclooctene (la) epoxidation in the presence of stoichiometric quantities of H_2O_2.After 5 h of reaction almost complete conversion was achieved (86% of conversion).Selectivity was always 100 % for the epoxide.

机译：分离并表征了Keggin型TBA_4H_2 [BW_（11）Mn（H_2O）O_（39）]。H_2O（BW_（11）Mn）化合物。通过EXAFS分析确定了锰原子的第一配位范围。在锰的1.80-2.64 A范围内发现了一个氧原子。在化学计量的H_2O_2存在下，BWnMn是一种有效，高效且选择性的顺式环辛烯（la）环氧化催化剂。反应5 h后几乎完全转化（转化率的86％）。对环氧化物的选择性始终为100％。

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来源
《Materials science forum》 |2013年第pta2期|975-980|共6页
作者
Salete S.Balula; Isabel C.M.S.Santos; Andre D.S.Barbosa; Walkiria Schlindwein; Ana M.V.Cavaleiro; Baltazarde Castro; Luis Cunha-Silva;
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作者单位

REQUIMTE & Department of Chemistry and Biochemistry,Faculty of Sciences,University of Porto,4169-007 Porto,Portugal;

CICECO & Department of Chemistry,University of Aveiro,3810-193 Aveiro,Portugal,QOPNA & Department of Chemistry,University of Aveiro,3810-193 Aveiro,Portugal;

REQUIMTE & Department of Chemistry and Biochemistry,Faculty of Sciences,University of Porto,4169-007 Porto,Portugal;

Leicester School of Pharmacy,De Montfort University,LE1 9BH,Leicester,UK;

CICECO & Department of Chemistry,University of Aveiro,3810-193 Aveiro,Portugal;

REQUIMTE & Department of Chemistry and Biochemistry,Faculty of Sciences,University of Porto,4169-007 Porto,Portugal;

REQUIMTE & Department of Chemistry and Biochemistry,Faculty of Sciences,University of Porto,4169-007 Porto,Portugal;

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正文语种 eng
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关键词
polyoxometalate; exafs spectroscopy; epoxidation;

机译：多金属氧酸盐exafs光谱学;环氧化;

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Manganese Mono-Substituted Borotungstate: Characterization and Catalytic Application

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