硫化P-W改性含的碳基固体酸催化剂,用于在水-乙醇介质下将纤维素转化为乙烯氨酸
Mingqiang Chen1, Longyang Li1, Yishuang Wang1
1School of Chemical Engineering, Anhui University of Science and Technology, 232001 Huainan, PR China.
International journal of biological macromolecules
|January 23, 2024
概括
这项研究开发了一种新的硫化P-W-修饰的含N的碳基固酸催化剂 (PWNCS),用于高效地将纤维素转化为乙烯乙酸盐 (EL). 催化剂实现了高纤维素转化率和乙烯基酸产量,证明了其对可持续液体燃料生产的潜力.
科学领域:
- 催化剂是一种催化剂.
- 绿色化学 绿色化学
- 生物质转换生物质转换
背景情况:
- 纤维素 (Cel) 转化为乙乙烯酸盐 (EL) 是可持续液体燃料生产的关键策略.
- 开发高效和选择性的固酸催化剂对于这种转化过程至关重要.
- 现有的催化剂经常面临稳定性,选择性或恶劣反应条件的挑战.
研究的目的:
- 合成和描述一种新的硫化P-W-修饰的含N碳基固酸催化剂 (PWNCS).
- 研究PWNCS的催化性能,用于将纤维素 (Cel) 转化为乙烯基酸盐 (EL).
- 阐明水在反应途径中的作用及其对选择性的影响.
主要方法:
- 使用聚氨 (PANI) 作为N和C前体合成PWNCS催化剂,随后进行P-W修饰和硫化.
- 催化剂的表征使用技术来确定酸位含量 (布伦斯特酸位 - BAS,易斯酸位 - LAS) 和结构完整性.
- 优化反应条件 (例如,水-乙醇介质) 以使纤维素转化为EL.
- 对反应产物的分析以确定转化,产量和选择性.
主要成果:
- PWNCS催化剂表现出高的催化活性,实现了大约100%的纤维素转化.
- 在优化条件下,产生了71.61%的乙烯氨酸,具有89.14%的选择性.
- 发现水的存在可以通过减少易斯酸位和抑制诸如逆醇凝结 (RAC) 等副作用来增强EL选择性.
结论:
- 开发的PWNCS催化剂在将纤维素转化为乙基氨酸方面非常有效.
- 催化剂的调节性酸位点 (BAS和LAS) 和结构性质有助于其高性能.
- 了解水的作用为进一步的催化剂设计和生物质转化过程优化提供了见解.
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