稀土改性硅钨酸在催化硝化间二甲苯的选择性研究  

The Selectivity on Pseudo-boehmite(PB)Carrier Supported Catalystsof Tungstosilicic Acid for Catalyzing and nitrifying m-xylene

作　　者：杨青 陶秦洋 陈雪 李帅 石春杰 Yang Qing;Tao Qinyang;Chen Xue;Li Shuai;Shi Chunjie(College of Materials and Chemical Engineering,Bengbu University,Bengbu 230030,China)

机构地区：[1]蚌埠学院材料与化学工程学院,安徽蚌埠230030

出　　处：《山东化工》2020年第10期4-6,共3页Shandong Chemical Industry

基　　金：2018安徽省大学生创新创业计划(201811305144)。

摘　　要：研究不同稀土离子改性的拟薄水铝石负载硅钨酸催化剂在催化硝化间二甲苯的选择性。通过X射线衍射(XRD),傅里叶红外(FT-IR)气相色谱(GC)等对所制备的催化剂及其催化硝化产物进行分析,结果表明:在温度50℃,反应时间时间4h、物质的量比n(间二甲苯)∶n(硝酸铁)=1∶0.5时4-硝基间二甲苯产量达84.47%,选择性最强,4-硝基间二甲苯与2-硝基间二甲苯比例达5.70。The selectivity of catalytic,which Pseudo-boehmite(PB)carrier supported catalysts of Tungstosilicic Acid on m-xylene nitrified,was investigated.X-ray diffraction(XRD),Fourier Transform Infrared Spectroscopy(FT-IR)and Gas Chromatograph(GC)were employed to analysis the products and catalysts.The optimum conditions of selectivity on m-xylene nitrified weresuggested that the reaction temperature was 50℃,the reaction time was 4 hours and the molar ratio is n(m-xylene):n(ferric nitrate)=1∶0.5.The yield of 4-nitrom-xylene reached 84.47%,and the ratio of 4-nitrom-xylene to 2-nitrom-xylene reached 5.70.

关 键 词：间二甲苯 4-硝基间二甲苯 2-硝基间二甲苯 选择性 硝化 

分 类 号：O625.61[理学—有机化学]