机械化学工程CaO-CeO2 双功能的催化剂,用于可持续的甘油碳酸盐生产,没有溶剂
Patcharaporn Inrirai1, Runzhe Yu1, Daniel Goma Jiménez1
1School of Chemistry and Chemical Engineering, Queen's University Belfast, David-Keir Building, Belfast BT9 5AG, U.K.
Energy & fuels : an American Chemical Society journal
|July 10, 2025
概括
这项研究开发了一种绿色机械化学方法,用于制造氧化-氧化 (CaO-CeO2) 催化剂,用于将甘油废物转化为有价值的甘油碳酸盐. 优化的催化剂实现了95%的转化,提高了生物炼油厂的循环性和可持续性.
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
- 绿色化学 绿色化学
背景情况:
- 生物炼油厂废弃物,如甘油,需要升级,以实现可持续性和循环经济.
- 糖碳酸盐是一种有价值的产品,可用于燃料添加剂和化学合成.
- 开发高效和可持续的催化过程对于生物炼油厂的价值化至关重要.
研究的目的:
- 探索用氧化-氧化 (CaO-CeO2) 双重功能催化材料的催化转化甘油到甘油碳酸盐.
- 开发一种清洁,高效,无溶剂的糖碳酸盐合成方法.
- 加强循环经济,减少生物炼油厂的碳足迹.
主要方法:
- 通过绿色机械化学方法合成CaO-CeO2催化剂.
- 使用XRD,FTIR,ICP,N2吸附,CO2-TPD和SEM/EDS进行全面的催化剂表征.
- 在用二甲基碳酸盐 (DMC) 无溶剂转化甘中的催化活性评估.
主要成果:
- 40%重量的CaO-CeO2催化剂表现出卓越的性能,达到95%的甘转化率和99%的甘碳酸盐选择性.
- 优化条件包括10 wt%的催化剂负荷,90 °C,60 分钟的反应时间,以及 1:3 的甘/DMC 摩尔比率.
- 催化剂在四个周期中表现出极好的可重复使用性,保持高的转换率.
- 反应动力学遵循了不可逆转的二次动力学,其激活能量为46.9kJ mol-1.
结论:
- 开发了一种高效,具有成本效益和环保的方法,用于从甘油中生产可持续的甘碳酸盐.
- 在界面上的CaO和CeO2之间的协同相互作用显著增强了催化活性.
- 这种方法有助于对生物炼油废物进行价值化,促进循环经济和净零目标.
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