Epoxidation of propylene with dilute H2O2 over titanium silicalite containing trace aluminum
文献类型：期刊论文
| 作者 | Guo, XW; Wang, XS; Liu, M; Li, G; Chen, YY; Xiu, JH; Zhuang, JQ; Zhang, WP; Bao, XH |
| 刊名 | catalysis letters
 |
| 出版日期 | 2002-07-01 |
| 卷号 | 81期号:1-2页码:125-130 |
| 关键词 | titanium silicalites aluminum-containing TS-1 TPABr propylene epoxidation thermal stability acid treatment |
| 英文摘要 | titanium silicalite (ts-1) was successfully synthesized by using tpabr as the template and silica sol as silicon source in a 100 l stainless steel autoclave. ir, xrd, uv--vis, elemental analysis, and (2)7al and (3)1p mas nmr were used to characterize the synthesized products. the results show that the synthesized material has an mfi structure with high crystallinity and large crystal size and two kinds of titanium species. trace aluminum in silica sol is also incorporated into the zeolite framework. the synthesized ts-1 exhibits high activity in the epoxidation of propylene with dilute h2o2 with high selectivity to methyl mono-ethers and low selectivity to propylene oxide (po). the low selectivity toward po is due to the residual acidity onto ts-1. the selectivity of po can reach up to 90% through adjusting the ph of the reaction mixture. extra amounts of base decrease the h2o2 utilization and the h2o2 conversion. however, in over acid-treated ts-1 in which part removal of extra-framework titanium takes place, the utilization of h2o2 is quite different: for the low si/ti ratio of ts-1, the h2o2 utilization increases. but the utilization of h2o2 does not change for the high si/ti ratio ts-1. thermal analysis shows that the as-synthesized ts-1 exhibits high activity and thermal stability in the calcined range 540-900 degreesc. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | hydrogen-peroxide ; probe molecule ; zeolites ; systems ; al-ts-1 ; sites ; nmr ; ti ; al |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000176481700019 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/84879]  |
| 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.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China 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 | Guo, XW,Wang, XS,Liu, M,et al. Epoxidation of propylene with dilute H2O2 over titanium silicalite containing trace aluminum[J]. catalysis letters,2002,81(1-2):125-130. |
| APA | Guo, XW.,Wang, XS.,Liu, M.,Li, G.,Chen, YY.,...&Bao, XH.(2002).Epoxidation of propylene with dilute H2O2 over titanium silicalite containing trace aluminum.catalysis letters,81(1-2),125-130. |
| MLA | Guo, XW,et al."Epoxidation of propylene with dilute H2O2 over titanium silicalite containing trace aluminum".catalysis letters 81.1-2(2002):125-130. |
入库方式： OAI收割
来源：大连化学物理研究所
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。