隔离四面体协调Ti的合理设计 (IV) 在岩框架中的地点用于甲基酸盐氧化
Sorasak Klinyod1, Krissanapat Yomthong1, Ploychanok Iadrat1
1Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong, 21210, Thailand.
研究人员通过消除发光来精确控制热酸盐催化剂中的位,通过消除发光来创造空缺. 这提高了甲基酸盐环氧化中的催化性能,为高效的催化剂设计提供了新的策略.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 石中孤立的金属位点是生物质转化催化剂的关键.
- 控制活性站点的协调和分布对于催化剂效率至关重要.
研究的目的:
- 为了研究的插入行为 (IV) 在不同的热带石框架 (ZSM-35,ZSM-5,BEA).
- 了解如何泽奥利特框架拓和脱光影响孤立四面体协调Ti(IV) 位点的形成.
- 优化Ti-zeolite催化剂,以提高甲基酸盐环氧化中的性能.
主要方法:
- 在各种热带石框架中,Ti(IV) 的同态替代.
- 调整热带石框架属性,特别是无人使用的地点通过脱光.
- 描述Ti(IV) 站点的协调和分布.
- 使用工程Ti-zeolites进行甲基酸盐环氧化催化试验.
主要成果:
- 岩框架拓学显著影响了Ti (IV) 插入可用的空置地点的程度.
- 减光 BEA 焦岩精确控制了孤立的,四面体协调的 Ti ((IV) 位点的形成.
- 岩结构中空缺的增加与孤立的Ti (IV) 位点的较高度相关.
- 设计的Ti-BEA催化剂在甲基酸盐环氧化中表现出卓越的性能,每molTi产生高达17.1±1.8molEP.
结论:
- 在石框架中,特别是BEA中,空置地点的程度可以通过脱光精确调节,以控制孤立的四面体协调的Ti (IV) 地点.
- 这一策略提高了甲基酸环氧化中的催化性能,证明了优化Ti-zeolite催化剂的可行途径.
- 这些发现为合理设计高效的Ti嵌入式热酸催化剂提供了一种新的方法,用于生物质转化.
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