MCM-41包裹Fe_3O_4负载乙酰丙酮铜催化二氧化碳合成苯乙烯环状碳酸酯  

Synthesis of Styrene Carbonate from Carbon Dioxide Catalyzed by Copper(Ⅱ)Acetylacetonate Supported on MCM-41-Coated Fe_3O_4

作　　者：罗珊珊[1] 罗鸣[1] 兰坤[1] 范国枝[1] 

机构地区：[1]武汉轻工大学化学与环境工程学院,湖北武汉430023

出　　处：《化学与生物工程》2016年第4期37-40,共4页Chemistry & Bioengineering

基　　金：湖北省教育厅科学技术研究计划重点项目(D20141704)

摘　　要：采用浸渍法制备了负载催化剂MCM-41包裹Fe3O4负载乙酰丙酮铜[Fe3O4@MCM-41/Cu(acac)2],利用红外光谱(IR)和X-射线粉末衍射(XRD)对负载催化剂的结构进行了表征,并采用原子吸收光谱(AAS)测定了负载催化剂中的Cu负载量;研究了负载催化剂在二氧化碳(CO2)和氧化苯乙烯(SO)偶联合成苯乙烯环状碳酸酯(SC)反应中的催化性能,考察了Cu负载量、反应温度、反应压力和反应时间等对SC合成的影响,并采用气相色谱(GC)对SC产率进行了定量分析,利用磁铁对负载催化剂进行了回收并研究了其循环催化性能。结果表明,负载催化剂具有较高的催化活性,SC产率高达91.7%;在重复使用5次后,负载催化剂的催化活性基本保持不变。Supported catalyst Fe3O4@MCM-41/Cu（acac）2was prepared by an impregnating method.The structure of the supported catalyst was characterized by infrared spectroscopy（IR）and X-ray powder diffraction（XRD）,and Cu loading amount of the supported catalyst was determined by atomic absorption spectroscopy（AAS）.The catalytic performance of the supported catalyst for the synthesis of styrene carbonate（SC）from carbon dioxide（CO2）and styrene oxide（SO）was investigated.The reaction conditions including Cu loading amount,reaction temperature,reaction pressure and reaction time were optimized,and the yield of SC was quantitatively determined by gas chromatography（GC）.The supported catalyst was recovered by a magnet and its cyclic catalytic performance was studied.Results showed that the supported catalyst displayed excellent catalytic activity and the yield of SC reached 91.7%.The catalytic activity of the supported catalyst remained the same after being reused for 5times.

关 键 词：FE3O4 MCM-41 乙酰丙酮铜 二氧化碳 氧化苯乙烯 苯乙烯环状碳酸酯 

分 类 号：O643.1[理学—物理化学]