An efficient hybrid, nanostructured, epoxidation catalyst: Titanium silsesquioxane-polystyrene copolymer supported on SBA-15
文献类型：期刊论文
| 作者 | Zhang, Lei; Abbenhuis, Hendrikus C. L.; Gerritsen, Gijsbert; Ni Bhriain, Nollaig; Magusin, Pieter C. M. M.; Mezari, Brahim; Han, Wei; van Santen, Rutger A.; Yang, Qihua; Li, Can |
| 刊名 | chemistry-a european journal
 |
| 出版日期 | 2007 |
| 卷号 | 13期号:4页码:1210-1221 |
| 关键词 | epoxidation mesoporous materials organic-inorganic hybrid composites polystyrene titanium |
| 英文摘要 | a novel interfacial hybrid epoxidation catalyst was designed with a new immobilization method for homogeneous catalysts by coating an inorganic support with an organic polymer film containing active sites. ne titanium silsesquioxane (tiposs) complex, which contains a single-site titanium active center, was immobilized successfully by in-situ copolymerization on a mesoporous sba-15-supported polystyrene polymer. the resulting hybrid materials exhibit attractive textural properties (highly ordered mesostructure, large specific surface area (> 380 m(2)g(-1)) and pore volume (-0.46 cm(3) g(-1))), and high activity in the epoxidation of alkenes. in the epoxidation of cyclooctene with tert-butyl hydrogen peroxide (tbhp), the hybrid catalysts have rate constants comparable with that of their homogeneous counterpart, and can be recycled at least seven times. they can also catalyze the epoxidation of cyclooctene with aqueous h2o2 as the oxidant. in two-phase reaction media, the catalysts show much higher activity than their homogeneous counterpart due to the hydrophobic environment around the active centers. they behave as interfacial catalysts due to their multifunctionality, that is, the hydrophobicity of polystyrene and the polyhedral oligomeric silsesquioxanes (poss), and the hydrophilicity of the silica and the mesoporous structure. combination of the immobilization of homogeneous catalysts on two conventional supports, inorganic solid and organic polymer, is demonstrated to achieve novel heterogeneous catalytic ensembles with the merits of attractive textural properties, tunable surface properties, and optimized environments around the active sites. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | resonance raman-spectroscopy ; transition-metal-complexes ; mesoporous silica ; molecular-sieves ; ts-1 zeolite ; composites ; carbon ; polymerization ; adsorption ; chemistry |
| 收录类别 | SCI ; CCR |
| 语种 | 英语 |
| WOS记录号 | WOS:000243897700017 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/140416]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Eindhoven Univ Technol, Schuit Inst Catalysis, NL-5600 MB Eindhoven, Netherlands 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Lei,Abbenhuis, Hendrikus C. L.,Gerritsen, Gijsbert,et al. An efficient hybrid, nanostructured, epoxidation catalyst: Titanium silsesquioxane-polystyrene copolymer supported on SBA-15[J]. chemistry-a european journal,2007,13(4):1210-1221. |
| APA | Zhang, Lei.,Abbenhuis, Hendrikus C. L..,Gerritsen, Gijsbert.,Ni Bhriain, Nollaig.,Magusin, Pieter C. M. M..,...&Li, Can.(2007).An efficient hybrid, nanostructured, epoxidation catalyst: Titanium silsesquioxane-polystyrene copolymer supported on SBA-15.chemistry-a european journal,13(4),1210-1221. |
| MLA | Zhang, Lei,et al."An efficient hybrid, nanostructured, epoxidation catalyst: Titanium silsesquioxane-polystyrene copolymer supported on SBA-15".chemistry-a european journal 13.4(2007):1210-1221. |
入库方式： OAI收割
来源：大连化学物理研究所
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