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题名: The oxidation of benzothiophene using the Keggin-type lacunary polytungstophosphate as catalysts in emulsion
作者: Zhang, Yongna1;  Lue, Hongying2;  Wang, Lu1;  Zhang, Yuliang1;  Liu, Peng1;  Han, Hongxian1;  Jiang, Zongxuan1;  Li, Can1
关键词: Lacunary ;  Polyoxotungstates ;  Benzothiophene oxidation ;  Transition metal
刊名: JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
发表日期: 2010-11-01
DOI: 10.1016/j.molcata.2010.08.021
卷: 332, 期:1-2, 页:59-64
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A series of emulsion catalysts were successfully synthesized with quarternary ammonium cations and heteropolyanions, and they were characterized by TG/DTA, FTIR, (31)P MAS NMR and EPR. The emulsion catalyst with intact Keggin-structure, [C(18)H(37)N(CH(3))(3)]H(2)[PW(12)O(40)] (PW(12)), is inactive for benzothiophene (BT) oxidation with H(2)O(2) as oxidant under atmospheric pressure at 30 C. Moreover, the metal-substituted catalysts PW(11)M (M =Ti, Mn, Fe, Co, Ni and Cu) show rather low activity with the conversion less than 15% for BT oxidation. Whereas, the catalyst with mono-lacunary Keggin-structures, [C(18)H(37)N(CH(3))(3)](5)Na(2)[PW(11)O(39)] (PW(11)), could completely catalytic oxidize BT into the corresponding sulfone under the same conditions. After careful characterizations of the catalysts, it is found that only PW(11) catalyst could effectively transform into the active polyperoxometalates species in the presence of hydrogen peroxide in non-polar solvent. (C) 2010 Elsevier B.V. All rights reserved.
关键词[WOS]: ULTRA-DEEP DESULFURIZATION ;  HYDROGEN-PEROXIDE ;  ALLYLIC ALCOHOLS ;  REGIOSELECTIVE EPOXIDATION ;  DIBENZOTHIOPHENE OXIDATION ;  SUPPORTED CATALYSTS ;  SELECTIVE OXIDATION ;  MOLECULAR-OXYGEN ;  HETEROPOLY ACIDS ;  SULFUR-COMPOUNDS
语种: 英语
WOS记录号: WOS:000284674300009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141990
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Yantai Univ, Sci & Engn Coll Chem & Biol, Yantai 264005, Peoples R China

Recommended Citation:
Zhang, Yongna,Lue, Hongying,Wang, Lu,et al. The oxidation of benzothiophene using the Keggin-type lacunary polytungstophosphate as catalysts in emulsion[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2010,332(1-2):59-64.
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