Supported cobalt catalysts for the selective hydrogenation of ethyl levulinate to various chemicals
作者:Youliang Cen、Shanhui Zhu、Jing Guo、Jiachun Chai、Weiyong Jiao、Jianguo Wang、Weibin Fan
DOI:10.1039/c8ra01316k
日期:——
reaction pathway was studied as well. It was found that the selectivity of GVL, 1,4-PDO and 2-MTHF on Co/ZrO2 can be easily tuned by changing reaction conditions, and can reach as high as 94%, 78% and 77%, respectively. The product selectivity is also significantly affected by the catalyst support. With SBA-15 as the support, the selectivity of EHP can reach 90%. Moreover, Co/ZrO2 gave an extraordinarily
开发了一种高活性和选择性钴催化剂,用于将生物质衍生的乙酰丙酸乙酯 (EL) 加氢为 γ-戊内酯 (GVL)、4-羟基戊酸乙酯 (EHP)、1,4-戊二醇 (1,4-PDO) 和2-甲基四氢呋喃 (2-MTHF),被认为是增值化学品和重要的生物燃料。考察了反应时间、反应温度、催化剂用量和溶剂对其催化性能的影响。此外,还研究了反应途径。发现 GVL、1,4-PDO 和 2-MTHF 对 Co/ZrO 2的选择性可以通过改变反应条件轻松调节,分别可以达到 94%、78% 和 77%。产物选择性也受到催化剂载体的显着影响。以SBA-15为载体,EHP的选择性可达90%。此外,Co/ZrO 2的 GVL 产率非常高,为 1.50 mol g金属-1 h -1,并表现出优异的稳定性和可重复使用性。有趣的是,焦炭对提高 GVL 收率有积极作用。AL 二聚体和三聚体被确定为 EL 氢化过程中的焦炭物种。据