MgO促进Cu/SiO2催化乙酰丙酸乙酯合成γ-戊内酯  

Synthesis of γ-valerolactone from ethyl levulinate over Mg-modified Cu/SiO2catalyst

作　　者：李松 丁玉山 赵亚楠 王康军 LI Song;DING Yu-shan;ZHAO Ya-nan;WANG Kang-jun(School of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China;Key Laboratory on Resources Chemicals and Materials of Ministry of Education,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学化学工程学院,辽宁沈阳110142 [2]沈阳化工大学资源化工与材料教育部重点实验室,辽宁沈阳110142

出　　处：《天然气化工—C1化学与化工》2020年第1期40-44,共5页Natural Gas Chemical Industry

基　　金：辽宁省自然科学基金(2015020649);重点实验室开发基金(KF1812)。

摘　　要：采用蒸氨法制备了Cu/SiO2和Cu-Mg/SiO2催化剂。采用X射线衍射(XRD)、N2吸附-脱附(BET)、N2O滴定、红外光谱(IR)、H2-程序升温还原(H2-TPR)、NH3-程序升温脱附(NH3-TPD)技术对催化剂的物理化学结构进行了表征,考察了其乙酰丙酸乙酯(EL)加氢合成γ-戊内酯性能。结果表明,与Cu/SiO2相比,加入MgO助剂可以提高催化剂的酸强度、酸量以及Cu物种的分散度,提高了乙酰丙酸乙酯转化率和γ-戊内酯选择性。Cu/SiO2 and Cu-Mg/SiO2 catalysts were prepared by ammonia-evaporation method and the physical and chemical properties were characterized by XRD, N2 adsorption-desorption, N2O titration, IR, H2-TPR and NH3-TPD. The catalytic performances of Cu-based catalyst prepared for hydrogenation of ethyl levulinate to γ-valerolactone were investigated. The results showed that,compared with Cu/SiO2, the addition of MgO could improve the amount of acid, the acidity strength and the Cu dispersion, resulting in the increase of ethyl levulinate conversion and γ-valerolactone selectivity.

关 键 词：乙酰丙酸乙酯 γ-戊内酯 合成 Cu-Mg/SiO2催化剂 

分 类 号：O624.5[理学—有机化学] O643.3[理学—化学]