Cobalt(II) acetylacetonate complex immobilized on aminosilane-modified SBA-15 as an efficient catalyst for epoxidation of trans-stilbene with molecular oxygen
文献类型：期刊论文
| 作者 | Tang, Qinghu1,2; Wang, Yanyan2; Zhang, Jian2; Qiao, Ran2; Xie, Xiaopei2; Wang, Yi3; Yang, Yanhui1 |
| 刊名 | APPLIED ORGANOMETALLIC CHEMISTRY
 |
| 出版日期 | 2016-06-01 |
| 卷号 | 30期号:6页码:435-440 |
| 关键词 | SBA-15 cobalt acetylacetonate trans-stilbene epoxidation molecular oxygen |
| ISSN号 | 0268-2605 |
| 英文摘要 | From environmental and economic points of view, it is highly desirable to develop a clean and efficient catalytic process to produce epoxides. An attractive approach is to use a solid, recyclable catalyst and molecular oxygen as the oxidant without any sacrificial reductant or other additives. Nonetheless, the catalysts reported up to now still cannot balance catalytic activity with epoxide selectivity. It is of great importance to explore novel catalysts with both high activity and selectivity for the epoxidation of olefins. In this work, cobalt(II) acetylacetonate (Co(acac)(2)) was covalently bonded to the silica surface of SBA-15 molecular sieve by multi-step grafting using 3-aminopropytrimethoxysilane (APTS) as coupling agent. Characterizations with nitrogen physisorption, X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis suggested that the metal complex was successfully immobilized on the aminosilane-modified SBA-15 surface and the channel structure remained intact. The synthesized Co(acac)(2)APTS@SBA-15 catalyst was used in the epoxidation of trans-stilbene (TS) with molecular oxygen. Compared to the sample prepared by the impregnation method as well as Co(acac)(2) solutions under the same reaction conditions, the Co(acac)(2) immobilized catalyst exhibited remarkably higher TS conversion and trans-stilbene oxide (TSO) selectivity. An increase in TS conversion with Co content was observed when the Co loading was lower than 0.70% and the 0.70Co(acac)(2)APTS@SBA-15 sample exhibited the best catalytic performance. Up to 50.1% of TS conversion could be achieved within 6 h, affording TSO selectivity as high as 96.7%. The superior catalytic performance of this particular catalyst is attributed to the high activity of the immobilized Co(acac)(2) species on SBA-15. Copyright (C) 2016 John Wiley & Sons, Ltd. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Applied ; Chemistry, Inorganic & Nuclear |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | SELECTIVE EPOXIDATION ; MESOPOROUS SILICA ; STYRENE ; ALKENES ; MCM-41 ; AIR |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000375998000009 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/21087]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Nanyang Technol Univ, Sch Chem & Biomed Engn, N1-2-B1-18,62 Nanyang Dr, Singapore 637459, Singapore 2.Henan Normal Univ, Minist Educ, Key Lab Green Chem Media & React, Collaborat Innovat Ctr Henan Prov Green Mfg Fine, Xinxiang 453007, Henan, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol Techn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Qinghu,Wang, Yanyan,Zhang, Jian,et al. Cobalt(II) acetylacetonate complex immobilized on aminosilane-modified SBA-15 as an efficient catalyst for epoxidation of trans-stilbene with molecular oxygen[J]. APPLIED ORGANOMETALLIC CHEMISTRY,2016,30(6):435-440. |
| APA | Tang, Qinghu.,Wang, Yanyan.,Zhang, Jian.,Qiao, Ran.,Xie, Xiaopei.,...&Yang, Yanhui.(2016).Cobalt(II) acetylacetonate complex immobilized on aminosilane-modified SBA-15 as an efficient catalyst for epoxidation of trans-stilbene with molecular oxygen.APPLIED ORGANOMETALLIC CHEMISTRY,30(6),435-440. |
| MLA | Tang, Qinghu,et al."Cobalt(II) acetylacetonate complex immobilized on aminosilane-modified SBA-15 as an efficient catalyst for epoxidation of trans-stilbene with molecular oxygen".APPLIED ORGANOMETALLIC CHEMISTRY 30.6(2016):435-440. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。