摘要
以生物质废弃物桔皮为原料,先热解制备桔皮炭材料,然后以桔皮炭为载体采用一步液相还原法制备钴-桔皮炭(Co-桔皮炭)催化剂,并将其应用于乙酰丙酸乙酯(EL)转化制备γ-戊内酯(GVL)反应。采用SEM、XRD、FT-IR、TG等技术对催化剂进行表征,结果显示:钴粒子均匀分布在炭载体表面,粒径约为0.1~2μm,桔皮炭载体富含含氧结构。在以异丙醇为液体氢源、催化剂用量0.2 g、反应温度160℃和反应时间5 h的最佳加氢反应条件下,热解温度300℃制备的钴负载量20%的Co-桔皮炭作为氢转移催化剂对EL转化制备GVL具有良好催化效果,EL转化率高达99.3%,GVL得率为85.2%;Co-桔皮炭重复使用4次后其催化性能有所下降。
The biomass waste orange peel was used as raw material to prepare orange peel carbon material by pyrolysis.Then,the cobalt-orange peel carbon catalyst was constructed by one-step liquid phase reduction method with orange peel carbon as the support.The catalyst was used to catalyze the conversion of ethyl levulinate(EL)toγ-valerolactone(GVL).The catalysts were characterized by SEM,XRD,FT-IR and TG.The results showed that the cobalt particles were uniformly distributed on the surface of the carbon support,with the particle size of 0.1-2μm.The orange peel carbon support was rich in oxygen-containing structure.The Co-orange peel carbon catalyst prepared at 300℃with the loading amount of Co 20%was used as hydrogen transfer catalyst and had good catalytic effect and stability for the conversion of EL to GVL.After 5 h reaction at 160℃with isopropanol as liquid hydrogen source,the conversion of EL was up to 99.3%,and the yield of GVL was 85.2%.The catalytic performance decreased after reused for 4 times.
作者
赵红叶
邬怡
杜政江
刘全生
周华从
ZHAO Hongye;WU Yi;DU Zhengjiang;LIU Quansheng;ZHOU Huacong(College of Chemical Engineering,Inner Mongolia University of Technology,Inner Mongolia Key Laboratory of High-Value Functional Utilization of Low Rank Carbon Resources,Hohhot 010051,China;College of Chemistry and Environmental Science,Inner Mongolia Normal University,Hohhot 010022,China)
出处
《生物质化学工程》
CAS
2021年第4期14-20,共7页
Biomass Chemical Engineering
基金
中国科学院“西部之光”青年学者项目(2020ZY0010)
国家自然科学基金资助项目(21968021)
内蒙古师范大学引进高层次人才科研启动经费项目(2020YJRC018)。
关键词
桔皮
氢转移催化剂
催化加氢
乙酰丙酸乙酯
γ-戊内酯
orange peel
hydrogen transfer catalyst
catalytic hydrogenation
ethyl levulinate
γ-valerolactone
