Pt加载的Nb─W金属复合氧化物用于二次C─O键的选择性裂解
Jinghu Chen1,2, Qineng Xia2, Yong Guo3
1State Key laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
Small (Weinheim an der Bergstrasse, Germany)
|August 3, 2023
概括
这项研究引入了一种新的支持的-复合氧化物催化剂,用于选择性解糖醇到1,3-propanediol (1,3-PDO). 新的催化剂实现了创纪录的产量,推动了生物质的价值化.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 生物质转换生物质转换
背景情况:
- 选择性解糖醇到1,3-propanediol (1,3-PDO) 对于生物质的价值化至关重要.
- 有效的催化转化需要精确激活和裂解糖醇的二次C−O键.
研究的目的:
- 开发一种新型的催化剂,用于高度选择性地将甘油化解为1,3-PDO.
- 研究Pt载荷的Nb-W复合氧化物在C─O键激活过程中具有晶体切割相的作用.
主要方法:
- 合成带有 Pt 的 Nb-W 复合氧化物 (Nb14W3O44) 用晶体切割相.
- 催化剂结构和活性位点的表征 (W-O-Nb).
- 评估催化剂在选择性解糖醇到1,3-PDO中的性能.
主要成果:
- 在Nb14W3O44支上,表现出独特的W-O-Nb活性位点,它们在C(2)─O键吸附和激活方面优越.
- 催化剂显示了增强的Pt纳米粒子相互作用和H2解离和化的高活性.
- Pt/Nb14W3O44获得了75.2%的1,3-PDO产量,超过了之前的66%的记录.
结论:
- 带有Pt载荷的Nb-W复合氧化物具有晶体切割相,可实现精确的二次C─O键激活,以实现高效的糖醇转化.
- 开发的催化剂为生物质转化技术的商业开发提供了一个有希望的途径.
- 这种催化方法可以扩展到其他涉及选择性C−O键激活的反应.
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