| 铈锰/硅基气凝胶载体的制备及其在合成碳酸二苯酯中的应用 |
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| 引用本文： | 洪超,徐潮,苏伟,吕庆阳,彭梦,袁华.铈锰/硅基气凝胶载体的制备及其在合成碳酸二苯酯中的应用[J].分子催化,2017,31(4):348-355. |
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| 作者姓名： | 洪超 徐潮 苏伟 吕庆阳 彭梦 袁华 |
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| 作者单位： | 武汉工程大学化学与环境工程学院绿色化工过程省部共建教育部重点实验室,湖北武汉,430074 |
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| 基金项目： | 国家自然科学基金（51474160），湖北省自然科学基金（2016CFA079） |
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| 摘 要： | 分别采用原位合成法、浸渍法制备不同组成的铈锰/硅基气凝胶载体,利用XRD、BET、TEM、EDS、FT-IR等手段对其结构进行表征.结果表明:采用浸渍法制备的铈锰/复合硅基气凝胶,铈锰金属氧化物为纳米尺寸颗粒,孔道保留较为完整.以苯酚催化氧化羰基化合成碳酸二苯酯反应,考察了铈锰/硅基复合气凝胶载体载钯催化剂的催化性能,结果表明以浸渍法制备组分为m(Ce+Mn)/m(SiO_2)=20%载钯催化剂,在反应压力5 MPa、反应温度75℃、反应时间6 h时,碳酸二苯酯单程收率可达21.58%,选择性为99.27%.
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| 关 键 词： | 硅气凝胶 铈锰复合氧化物 催化氧化 碳酸二苯酯 |
| 收稿时间： | 2017/8/3 0:00:00 |
| 修稿时间： | 2017/7/10 0:00:00 |
Preparation of Cerium-Manganese Composite Aerogel Supports and the Application in the Synthesis of Diphenyl Carbonate |
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| HONG Chao,XU Chao,SU Wei,LU Qing-yang,PENG Meng and YUAN Hua.Preparation of Cerium-Manganese Composite Aerogel Supports and the Application in the Synthesis of Diphenyl Carbonate[J].Journal of Molecular Catalysis (China),2017,31(4):348-355. |
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| Authors: | HONG Chao XU Chao SU Wei LU Qing-yang PENG Meng and YUAN Hua |
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| Institution: | Key Laboratory for Green Chemical Process of Ministry of Education, School of chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China,Key Laboratory for Green Chemical Process of Ministry of Education, School of chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China,Key Laboratory for Green Chemical Process of Ministry of Education, School of chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China,Key Laboratory for Green Chemical Process of Ministry of Education, School of chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China,Key Laboratory for Green Chemical Process of Ministry of Education, School of chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China and Key Laboratory for Green Chemical Process of Ministry of Education, School of chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China |
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| Abstract: | Cerium-manganese composite silica aerogel carriers were prepared by in-situ synthesis and impregnation methods respectively.The samples were characterized by XRD,FT-IR,BET,TEM and EDS methods.The results showed that cerium-manganese oxide particles in silica aerogel carriers prepared by impregnation were in nano-size and those composite carriers remained intact pore.The catalytic performance for corresponding palladium-supported catalysts were investigated on the synthetic reaction of dipenyl carbonate by catalytic oxidation of phenol.The catalytic activity of Pd/20％ (Ce+Mn)-SiO2 under impregnation was much higher,over which the single pass yield of DPC reached 21.58％ with selectivity above 99.27％ under a totalpressure of 5 MPa at 75 ℃ for 6 h. |
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| Keywords: | silica aerogels cerium-manganese composite oxide catalytic oxidation diphenyl carbonate |
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