MgAl2O4催化正丁醛羟醛缩合反应性能的稳定性研究  

Stability Studies of MgAl2O4 Catalyst for n-Butyraldehyde Aldol Condensation

作　　者：赵海龙 熊超 安华良[2] Zhao Hailong;Xiong Chao;An Hualiang(Xindi Energy Engineering Technology Company Limited Beijing Research and Development Center,Beijing 100176,China;Hebei Provincial Key Laboratory of Green Chemical Technology and Efficient Energy Saving,School of Chemical Engineering and Technology,Hebei University of Technology Tiajijin 300130,China)

机构地区：[1]新地能源工程技术有限公司北京技术研发中心,北京100176 [2]河北工业大学化工学院河北省绿色化工与高效节能重点实验室,天津300130

出　　处：《化学世界》2020年第6期438-442,共5页Chemical World

基　　金：国家自然科学基金青年(No.21506046)资助项目。

摘　　要：采用共沉淀法制备了MgAl2O4催化剂,分别在高压釜和固定床反应器上评价了其催化正丁醛羟醛缩合反应的性能。考察了MgAl2O4催化剂的稳定性,采用XRD、FT-IR、能谱仪(EDS)和电感耦合等离子体光对光谱仪(ICP-OES)对使用前后的MgAl2O4催化剂进行了表征。结果表明,MgAl2O4对正丁醛羟醛缩合反应具有较好的催化活性,并且不存在与副产物水发生水合副反应的问题,但MgAl2O4催化剂表面容易发生积碳而导致失活。MgAl2O4 catalyst was prepared by the co-precipitation method,and its catalytic behavior for aldol condensation of n-butyraldehyde to 2-ethyl-2-hexenenal was evaluated in the autoclave and fixed bed reactor,respectively.The stability of MgAl2O4 catalyst was investigated,and XRD,FT-IR,energy dispersive spectrometer(EDS),and inductively coupled plasma-optical emission spectrometry(ICP-OES)were employed to characterize the catalyst before and after the reaction.The results showed that MgAl2O4 showed a good catalytic activity for n-butyraldehyde aldol condensation,and it could restrain the hydration.However,MgAl2O4 catalyst was easy to deposit carbon,resulting in the deactivation.

关 键 词：正丁醛 羟醛缩合 辛烯醛 MGAL2O4 稳定性 

分 类 号：TQ032[化学工程]