Polyoxometalate-based ionic complexes immobilized in mesoporous silicas prepared via a one-pot procedure: Efficient and reusable catalysts for H2O2-mediated alcohol oxidations in aqueous media
文献类型：期刊论文
| 作者 | Zhao, Haihong1; Zeng, Linxiang1; Li, Yunlong1; Liu, Cheng1; Hou, Bo2; Wu, Dong2; Feng, Ningdong3; Zheng, Anmin3; Xie, Xianglin1; Su, Shengpei1 |
| 刊名 | MICROPOROUS AND MESOPOROUS MATERIALS
 |
| 出版日期 | 2013-05-15 |
| 卷号 | 172页码:67-76 |
| 关键词 | Polyoxometalate Ionic liquid Immobilization Mesoporous silica Alcohol oxidation |
| 英文摘要 | Fabrication of 12-tungstophosphoric acid-(dihydro)imidazolium cation ionic complexes incorporated into SBA-15 mesoporous silicas was achieved via a one-pot procedure including prehydrolyzation of tetraethoxysilane in the presence of surfactant (EO20PO70EO20), addition of 1-trimethoxysilylpropyl-3-methylimidazolium chloride or N-(3-triethoxysilylpropyl), N(3)-(3-trimethoxysilylpropyl-4,5-dihydroimidazolium chloride, and successive addition of 12-tungstophosphoric acid. The obtained composite materials were well characterized. XRD, TEM, and nitrogen adsorption-desorption results indicated that the composite materials possessed good mesoporous character. FT-IR, ICP, and solid-state NMR analyses showed 12-tungstophosphoric acid-(dihydro)imidazolium cation ionic complexes had been incorporated into SBA-15 mesoporous silicas with intact structure of organic moieties and Keggin units. Using H2O2-mediated selective alcohol oxidations in aqueous media as test reactions, it was found that the occasion of adding HPW, together with the location of the (dihydro)imidazolium cations in the meso-structures, played a crucial role in 12-tungstophosphoric acid loading and ultimate catalytic performance. Under optimum conditions, our catalysts showed better catalytic efficiency and reusability than their analog prepared by a multistep process due to better dispersion of the Keggin units, higher structural stability, and lower leaching level of active Keggin units. (C) 2013 Elsevier Inc. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 关键词[WOS] | SUPPORTED 12-TUNGSTOPHOSPHORIC ACID ; PHOSPHOTUNGSTIC ACID ; HYDROGEN-PEROXIDE ; HETEROPOLY ACIDS ; BIODIESEL PRODUCTION ; HETEROGENEOUS EPOXIDATION ; DEEP DESULFURIZATION ; SELECTIVE OXIDATION ; TOLUENE ALKYLATION ; PHASE OXIDATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000316923900010 |
| 公开日期 | 2015-07-14 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/936]  |
| 专题 | 武汉物理与数学研究所_磁共振应用研究部 |
| 作者单位 | 1.Hunan Normal Univ, Key Lab Sustainable Resources Proc & Adv Mat Huna, Changsha 410081, Hunan, Peoples R China 2.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China 3.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Haihong,Zeng, Linxiang,Li, Yunlong,et al. Polyoxometalate-based ionic complexes immobilized in mesoporous silicas prepared via a one-pot procedure: Efficient and reusable catalysts for H2O2-mediated alcohol oxidations in aqueous media[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2013,172:67-76. |
| APA | Zhao, Haihong.,Zeng, Linxiang.,Li, Yunlong.,Liu, Cheng.,Hou, Bo.,...&Yu, Ningya.(2013).Polyoxometalate-based ionic complexes immobilized in mesoporous silicas prepared via a one-pot procedure: Efficient and reusable catalysts for H2O2-mediated alcohol oxidations in aqueous media.MICROPOROUS AND MESOPOROUS MATERIALS,172,67-76. |
| MLA | Zhao, Haihong,et al."Polyoxometalate-based ionic complexes immobilized in mesoporous silicas prepared via a one-pot procedure: Efficient and reusable catalysts for H2O2-mediated alcohol oxidations in aqueous media".MICROPOROUS AND MESOPOROUS MATERIALS 172(2013):67-76. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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