Pd/ZrO_(2)-活性炭催化一锅法合成2-丁基环己酮的研究  

Preparation of 2-butylcyclohexanone over Pd/ZrO_(2)-AC by one-pot method

作　　者：吴慧玲 薛伟洋 顾彬[1] 刘梦洋 荣欣[1] 李敬美[1] 孙承林[1] WU Hui-ling;XUE Wei-yang;GU Bin;LIU Meng-yang;RONG Xin;LI Jing-mei;SUN Cheng-lin(Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]中国科学院大学,北京100049

出　　处：《现代化工》2022年第9期114-119,共6页Modern Chemical Industry

基　　金：国家自然科学基金青年基金项目(21802135)。

摘　　要：采用浸渍法制备了一系列不同ZrO_(2)掺杂量的Pd/ZrO_(2)-活性炭(AC)复合催化剂,并用于正丁醛与环己酮一锅法制备2-丁基环己酮。利用XRD、N_(2)物理吸附、TG-DTG、SEM、TEM对Pd/ZrO_(2)-AC复合催化剂的物理及化学性质进行表征,考查了ZrO_(2)掺杂量、反应温度、Pd负载量、载体制备方法对反应性能的影响。结果表明,在140℃条件下,浸渍法制备的0.8Pd/50ZrO_(2)-AC可实现98%的正丁醛转化率及77%的2-丁基环己酮收率,优于Pd/ZrO_(2)及Pd/AC催化剂。0.8Pd/50ZrO_(2)-AC催化剂循环使用3次,始终保持95%以上的正丁醛转化率及约70%的2-丁基环己酮收率,表现出良好的循环稳定性。A series of Pd/ZrO_(2)-AC catalysts doped with different amounts of ZrO_(2) are prepared by impregnation method,and their performance is evaluated in preparation of 2-alkyl cyclohexanone from n-butyraldehyde and cyclohexanone via one-pot method.The physical and chemical properties of Pd/ZrO_(2)-AC catalysts are characterized by X-ray powder diffraction,N_(2) physical adsorption,TG-DTG,SEM,and TEM.The effects of the doping amount of ZrO_(2),reaction temperature,Pd loading amount,and the preparation method of carrier on the reaction are investigated.The 0.8Pd/50ZrO_(2)-AC catalyst that is prepared by impregnation method can help to realize a 98%of n-butanal conversion and a 77%of 2-butylcyclohexanone yield through one-pot synthesis method at 140℃,higher than Pd/ZrO_(2) and Pd/AC.During three cycles of tests,the 0.8Pd/50ZrO_(2)-AC catalyst always contributes to a great conversion rate of n-butyraldehyde(more than 95%)and a yield of 2-butylcyclohexanone(around 70%),showing good stability and reusability.

关 键 词：羟醛缩合 加氢 ZrO_(2) 活性炭 2-丁基环己酮 

分 类 号：TH3[机械工程—机械制造及自动化]