糠醛与环戊酮羟醛缩合反应催化剂及其催化机理研究进展  

Research progress on catalysts and catalytic mechanism of furfural and cyclopentanone aldol condensation

作　　者：朱冰娴 刘佳慧 李丹辉 赵丽丽 马晶军[1] Zhu Bingxian;Liu Jiahui;Li Danhui;Zhao Lili;Ma Jingjun(College of Science and Technology,Hebei Agricultural University,Huanghua 061100,Hebei,China)

机构地区：[1]河北农业大学理工系,河北黄骅061100

出　　处：《工业催化》2023年第11期8-16,共9页Industrial Catalysis

基　　金：河北省自然科学基金(B2020204023);大中学生科技创新能力培育专项(22E50052D);河北农业大学科研启动基金(YJ2020022)。

摘　　要：糠醛和环戊酮羟醛缩合反应是制备高质量生物燃料的重要步骤之一。以生物质糠醛和环戊酮为原料合成可再生的生物燃料路线是可持续发展、符合绿色化学要求的。但对该反应的催化机理还不清楚,该反应在不同催化作用下,可以得到两种产物,即2,5-双(2-呋喃基亚甲基)环戊酮(F_(2)Cp)和2-(2-呋喃基亚甲基)环戊酮(FCp)。以F_(2)Cp作为目的产物,对用于该反应的酸催化剂、碱催化剂以及酸碱双功能催化剂的催化性能进行分析。结果表明,酸性Al_(2)O_(3)催化剂与酸碱双功能Na-HAP催化剂均具有较优的催化性能,并且采用无溶剂、微波辐射法,可提高反应速率。在此基础上,对催化机理进行了阐述与分析。机理分析表明,酸碱协同作用有利于羟醛缩合反应的进行。因此,设计制备具有适宜酸碱比例的固体酸碱双功能催化剂是后续该反应研究的重点,同时也为其他醛类或酮类的缩合反应提供一定的参考。Aldol condensation of furfural with cyclopentanone is one of the important steps in preparation of the high-quality biofuels.The synthesis of renewable biofuels from biomass furfural and cyclopentanone is sustainable and meets the requirements of green chemistry.However,the catalytic mechanism of this reaction are not very clear.Under different catalysis,two products can be obtained,2,5-bis(2-furanylmethylene)cyclopentanone(F_(2)Cp)and 2-(2-furanylmethylene)cyclopentanone(FCP).In this paper,the catalytic performances of acid catalyst,base catalyst and acid-base bifunctional catalyst used in the reaction for target product of F_(2)Cp were analyzed.The analysis shows that both acidic Al_(2)O_(3)catalyst and acid-base bifunctional Na-HAP catalyst have better catalytic performance.The microwave radiation method can increase the reaction rate under free solvent.On this basis,the catalytic mechanism is described and analyzed.The mechanism analysis shows that the acid-base synergism is beneficial to the aldol condensation reaction.Therefore,the design and preparation of solid acid-base bifunctional catalysts with appropriate acid-base ratio is the focus of the follow-up study of this reaction,and also provide some references for the aldol condensation reaction of other aldehydes or ketones.

关 键 词：催化化学 糠醛 环戊酮 催化剂 2 5-双(2-呋喃基亚甲基)环戊酮 催化机理 

分 类 号：TQ032[化学工程] O643.36[理学—物理化学]