| 任容欣,宋万仓,刘冠锋,臧甲忠,于海斌.多级孔钛硅分子筛的制备及应用进展[J].分子催化,2017,31(6):594-604 |
| 多级孔钛硅分子筛的制备及应用进展 |
| Recent Research in Preparation and Application of Hierarchical Titanium Silicalite-1 Molecular Sieve |
| 投稿时间：2017-09-05 修订日期：2017-10-20 |
| DOI： |
| 中文关键词: 多级孔 TS-1分子筛 碱处理 选择氧化 |
| 英文关键词:hierarchical zeolite TS-1 zeolite bases treatment catalytic oxidation |
| 基金项目:中海油能源发展股份有限公司项目（HFKJ-TJY1703） |
|
| 摘要点击次数: 1813 |
| 全文下载次数: 3564 |
| 中文摘要: |
| 以钛硅分子筛（TS-1）为催化剂的选择性催化氧化工艺具有反应条件温和、产物选择性高及环境污染小等特点，促进了烃类催化氧化反应的绿色化发展.但常规TS-1分子筛狭窄的孔道限制了其在大分子催化氧化反应中的应用.多级孔TS-1分子筛为包含不同尺度的孔道结构的晶体沸石，兼具微孔分子筛晶体优异的水热稳定性和介孔材料优异的扩散传输性能，因此其受到国内外众多专家学者的广泛关注.多级孔TS-1分子筛的制备方法很多，主要有直接合成法和后处理法，其中直接合成法包括硬模板法、软模板法和自组装法，而后处理制备主要为碱处理法.我们在对多级孔TS-1分子筛制备方法进行归纳总结的基础上，探讨不同制备方法对分子筛中钛硅物种分布、孔道结构及催化烃类选择性氧化反应性能的影响.结合目前TS-1分子筛应用现状，对其未来发展进行展望. |
| 英文摘要: |
| Titanium silicalite-1(TS-1) presents a remarkable catalytic activity in selective oxidation reactions under mild conditions, especially when hydrogen peroxide is used as oxidizing agent. TS-1 was commercially produced and employed in many industrial catalytic oxidation processes, such as propylene epoxidation, phenol hydroxy-lation, and cyclohexanone ammoximation. However, due to the small size of its micropores, TS-1 shows severe limitations in reactions that make use of organic with large diameters, as bulky substrates or large oxidants. The hirearchical TS-1 has both excellent thermal and hydrothermal stalibity of microporous zeolites and high diffusion property of mesoporous materials. Accordingly, the synthesis of hierarchical TS-1 has acquired a great interest in the field of catalytic oxidation processes in recent years. This paper reviews the method of hierarchical TS-1 synthesized and the application of hierarchical TS-1 in catalytic oxidation field. The differences of Ti species distribution and catalytic activity using different synthesized method are emphatically discussed. Furthermore, current challenges and future strategies were previewed in combination with the present application of TS-1 zeolite. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
