碘改性的复合氧化物选择性氧化甲苯合成苯甲醛  

Selective Oxidation of Toluene to Benzaldehyde Catalyzed by Iodine Modified Mixed Oxides

作　　者：金同发 徐杰 宋世豪 郭严文 叶梦晨 赵红霞 王晓丽 吴功德[1,2] JIN Tongfa;XU Jie;SONG Shihao;GUO Yanwen;YE Mengchen;ZHAO Hongxia;WANG Xiaoli;WU Gongde(Department of Environment and Technology,Nanjing Institute of Technology,Nanjing 211167,China;Energy Research Institute,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院环境工程学院,江苏南京211167 [2]南京工程学院能源研究院,江苏南京211167

出　　处：《石油学报（石油加工）》2019年第6期1087-1093,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(21203093);江苏省重点研发计划项目(BE2018718);江苏省自然科学基金项目(BK20161481);江苏省产学研-前瞻性联合研究项目(BY2016008-03);江苏省高校“青蓝工程”、南京工程学院“挑战杯”竞赛项目(TP20161201和TZ20170023)资助

摘　　要：制备了一系列碘改性的介孔复合氧化物催化剂,利用XRD、N 2吸脱附、TEM、H 2-TPR和元素分析等手段对其进行了表征,并以O 2为氧化剂,考察其在甲苯选择性氧化合成苯甲醛反应中的催化性能。结果表明:所制备的碘改性的介孔复合氧化物催化剂具有良好的介孔结构;其元素组成显著影响其催化性能;以乙腈为溶剂,甲苯(0.1 mol)与O 2(1.0 MPa)在I/CuMgAlO催化剂0.2 g、120℃下反应6 h后,甲苯转化率最高可达33.7%,苯甲醛选择性为98.5%。I/CuMgAlO催化剂可重复使用多次。A series of iodine modified mixed oxides were prepared and characterized by XRD,N 2 adsorption desorption,TEM,H 2-TPR and elemental analysis.These catalysts were evaluated by the selective oxidation of toluene to benzaldehyde with O 2.It is found that the iodine modified mixed oxides show good mesoporous structure.Moreover,the elemental composition of modified catalysts plays an important role in the catalytic performance.When the reaction of 0.1 mol toluene with 1.0 MPa O 2 runs for 6 h at 120℃using acetonitrile as solvent and I/CuMgAlO 0.2 g,the highest toluene conversion reaches 33.7%with the bezaldehyde selectivity of 98.5%.In addition,the catalysts of I/CuMgAlO can be reused for several times.

关 键 词：复合氧化物 表面改性 选择性氧化 甲苯 苯甲醛 

分 类 号：O643.32[理学—物理化学]