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Updated: May 28, 2025

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以乙醇辅助合成富含的TS-1焦:一个新的六合协调Ti站点,用于高效的烯环氧化

Dapeng Hao^1,2, Xintong Li³, Guangyuan He⁴

¹State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University 2699 Qianjin Street Changchun 130012 P. R. China jihong@jlu.edu.cn.

Chemical science

|February 12, 2025

概括

研究人员使用乙醇开发了一种新的富含的TS-1热. 这种新型材料表现出前所未有的六合协调物种,导致高度活跃和选择性的烯环氧化催化.

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:

TS-1 (MFI) 焦化物是绿色氧化反应的关键催化剂,如烯环氧化.
提高催化效率通常涉及增加含量或创建高度活跃的物种.

研究的目的:

用一种新型的六合协调物种合成富含的TS-1焦石.
研究乙醇作为晶体生长修饰剂在控制结合和热结构中的作用.
为了评估在烯环氧化过程中合成的焦的催化性能.

主要方法:

使用乙醇作为晶体生长修饰剂的两步结晶策略.
合成富含的TS-1焦石,其Si/Ti比为25.6.
使用紫外线共振拉曼光谱,X射线吸收光谱和理论计算进行了表征.
在烯环氧化反应中的应用.

主要成果:

一种新的六合协调的Ti物种,被确定为Ti (OH) () () () () () () () () () () () (),已成功合成.
乙醇调解了结晶路径,增强了的合并并平衡了晶体的生长.
合成的TS-1焦石表现出异常的催化活性 (35.6%的H₂O₂转化),高选择性 (93.3%的1,2-氧化物) 和出色的稳定性.

结论:

乙醇辅助合成是一种有效的策略,用于将新型六合协调Ti物种纳入TS-1热石中.
与传统的TS-1催化剂相比,新的Ti物种在烯环氧化中表现出优越的催化性能.
这项工作为设计用于氧化反应的高活性烯酸催化剂开辟了道路.

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