Co-N-C体系催化α-芳香醇氨氧化直接制备α-芳香腈  

Co-N-C System Catalyzed the Ammoxidation of α-Aromatic Alcohol to α-Aromatic Nitrile Directly

作　　者：夏语嫣 吕庆阳 袁华 XIA Yu-yan;LU Qing-yang;YUAN hua(School of Chemistry and Environmental Engineerings Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]武汉工程大学化学与环境工程学院,湖北武汉430205

出　　处：《分子催化》2021年第1期48-53,I0003,共7页Journal of Molecular Catalysis(China)

基　　金：湖北省国家自然科学基金面上项目(No.2016CFA079)资助。

摘　　要：以Co(NO_(3))_(2)·6H_(2)O和1-丁基-3-甲基咪唑氢溴酸盐为前驱体,Vulcan XC72R为载体,采用浸渍法制备负载型Co-N-C催化剂,使用XRD、 XPS、 HRTEM等手段对其结构进行了表征.以α-芳香醇催化氨氧化合成α-芳香腈为考察对象,对其催化性能进行了评价.例如,在O_(2)压力为0.5 MPa,反应温度为120℃,反应时间为20 h的条件下,以Co-N-C/700为催化剂,NH_(3)(aq)为氨源,在催化苯甲醇合成苯甲腈反应中,苯甲醇转化率可达100%,产物苯甲腈选择性为100%.Using Co(NO_(3))_(2)·6 H_(2)O and 1-butyl-3-methylimidazole hydrobromide as precursors, and Vulcan XC72 R as the supporter, the supported Co-N-C system was prepared by the impregnation method. Its structure was characterized by X-ray diffraction(XRD), X-ray electron spectroscopy(XPS), and High Resolution Transmission Electron Microscope(HRTEM), etc. The catalytic performance was evaluated by studying the process of its cataly-tic ammoxidation of α-aromatic alcohol to α-aromatic nitrile. For example, under the conditions of 120 ℃, O_(2) pressure 0.5 MPa, and reaction time for 20 h, with Co-N-C/700 as the catalyst, NH_(3)(aq) as the ammonia source, in the catalytic reaction of benzyl alcohol to benzonitrile, the conversion of benzyl alcohol can reach 100%, and the selective of the productbenzonitrileis 100%.

关 键 词：Co-N-C α-芳香醇 α-芳香腈 催化氨氧化 

分 类 号：O643.32[理学—物理化学]