Efficient and selective transformation of biomass-derived furfural with aliphatic alcohols catalyzed by a binary Cu-Ce oxide
作者:Xinli Tong、Linhao Yu、Xuan Luo、Xuli Zhuang、Shengyun Liao、Song Xue
DOI:10.1016/j.cattod.2017.04.057
日期:2017.12
after being reused five times. Moreover, the oxidative condensation of FUR with various aliphatic alcohols including ethanol, isopropanol, n-butanol and n-hexanol was studied where the long chain alcoholic molecule hinders the proceeding of reaction. Finally, based on the experimental results and reaction phenomena, a possible mechanism for the oxidative condensation of FUR with n-propanol-O2 is proposed
使用二元Cu-Ce氧化物作为催化剂,已经开发了用脂肪族醇有效地转化糠醛(FUR)以实现碳链增长的方法。在分子氧存在下,成功地进行了FUR与正丙醇的串联氧化缩合反应,其中FUR的转化率为85.4%,对3-(呋喃-2-基-)-2-甲基丙烯醛的选择性为95.3% 。详细研究了不同Cu / Ce比和基础添加剂的影响。结果发现,CuO-CeO 2(1:9)催化剂是最佳的,而碳酸钾是合适的添加剂。接下来,CuO-CeO 2的回收经过测试,在重复使用五次后,活性没有明显下降。此外,还研究了FUR与各种脂肪醇(包括乙醇,异丙醇,正丁醇和正己醇)的氧化缩合反应,其中长链醇分子阻碍了反应的进行。最后,根据实验结果和反应现象,提出了FUR与正丙醇-O 2氧化缩合的可能机理。