锌基双金属催化剂催化乙酰丙酸加氢性能研究  

Study on catalytic performance of zinc-based bimetallic catalyst for hydrogenation of levulinic acid

作　　者：耿付江 韩文鹏 王淑娟 朱廷春[1] 胡俊平[1] 李金龙 GENG Fu-jiang;HAN Wen-peng;WANG Shu-juan;ZHU Ting-chun;HU Jun-ping;LI Jin-long(Hebei Provincial University Research and Development Center for Nano inorganic Optoelectronic New Material Application Technology,Hebei Provincial Key Laboratory of Heterocyclic Compounds,Handan University,Handan 056005,China;Department of Applied Chemistry,Yuncheng University,Yuncheng 044000,China)

机构地区：[1]邯郸学院,河北省杂环化合物重点实验室,河北省高校纳米无机光电新材料应用技术研发中心,河北邯郸056005 [2]运城学院应用化学系,山西运城044000

出　　处：《现代化工》2025年第2期163-169,175,共8页Modern Chemical Industry

基　　金：邯郸学院校级项目(XZ2024023);邯郸学院教育教学改革研究与实践项目(2023XJJG015);河北省实验教学和教学实验室建设研究项目;河北省高等学校科学研究项目(ZC2023005);邯郸市科技专项计划自筹经费项目(23422404144ZC);河北省杂环化合物重点实验室开放课题(KF202405)。

摘　　要：通过共沉淀方法制备了3种锌基双金属催化剂Ni/ZnO、Co/ZnO和Cu/ZnO,将其用于催化乙酰丙酸(LA)选择性加氢制备γ-戊内酯(GVL)。结果表明,催化剂活性顺序为:Co/ZnO>Cu/ZnO>Ni/ZnO。表征结果表明,制备得到的3种催化剂均具有类似花状形貌且颗粒尺寸分布均匀。Co/ZnO催化剂的高催化活性主要来自于Co^(0)金属位点、Co^(0)与ZnO间强相互作用以及高的酸性位点含量。当Co/ZnO催化剂质量为100 mg、反应温度为130℃、反应压力为2 MPa H_(2)、反应溶剂为1,4-二氧六环、反应时间为4 h时,LA转化率为100%,GVL收率为95.5%。催化剂循环5次后,活性并未明显降低,展现出了较好的稳定性。Three kinds of zinc-based bimetallic catalysts,including Ni/ZnO,Co/ZnO and Cu/ZnO,are prepared via a co-precipitation method,and used to catalyze the selective hydrogenation of levulinic acid to produceγ-valerolactone.Results indicate that the catalytic activity sequence is Co/ZnO>Ni/ZnO>Cu/ZnO.Characterization results show that all three kinds of catalysts prepared have flower-like morphology and uniform particle size.The high catalytic activity of Co/ZnO catalysts is primarily attributed to Co^(0) metal sites,strong interaction between Co^(0) and ZnO,and high content of acidic sites.The conversion rate of levulinic acid and the yield ofγ-valerolactone are 100%and 95.5%,respectively when the dosage of Co/ZnO catalyst is 100 mg,reaction temperature is 130℃,reaction pressure is 2 MPa H_(2),1,4-dioxane is served as reaction solvent,and the reaction lasts for 4 hours.In addition,after 5 cycles,the activity of the catalyst does not decrease significantly,demonstrating a good stability.

关 键 词：双金属催化剂 乙酰丙酸 γ-戊内酯 选择性加氢 

分 类 号：G643[文化科学—高等教育学]