金属离子改性的β-沸石催化硝化联苯  

Nitration of Biphenyl overβ-zeolites Modified by Metal Ions

作　　者：邰燕芳 石春杰[1,2] 吴景梅 TAI Yan-fang;SHI Chun-jie;WU Jing-mei(School of Materials and Chemical Engineering,Bengbu University,Bengbu 233000,China;Institute of Chemical Application Technology Development,Bengbu University,Bengbu 233000,China)

机构地区：[1]蚌埠学院材料与化学工程学院,安徽蚌埠233030 [2]蚌埠学院化工应用技术开发研究所,安徽蚌埠233030

出　　处：《枣庄学院学报》2020年第2期1-8,共8页Journal of Zaozhuang University

基　　金：国家自然科学基金资助项目(项目编号:21503004);安徽省高校自然科学研究一般项目(项目编号:113052015KJ02)。

摘　　要：以乙酸酐为溶剂,金属离子改性的β-沸石作为催化剂,研究了联苯的硝化反应.实验数据表明在该体系中,金属离子改性的β-沸石催化联苯硝化,其对位产物的选择性明显增高,推测原因可能是乙酸酐与β-沸石两者之间形成了电子络合物,有益于对位产物的生成,结果显示,在该反应体系中,产物的一硝化收率可达65.5%,邻对比最佳值为0.40.The nitration of biphenyl catalyzed byβ-zeolite modified by metal ions in the acetic anhydride was studied.Experiment data showed that the selectivity of para-nitrobiphenyl increased obviously in the system over modifiedβ-zeolite catalyst.The reason may be the formation of a electronic complex betweenβ-zeolite and acetic anhydride which is good for the production of the para-nitrobiphenyl.The yield of biphenyl mononitration product was up to 65.51%and the ratio of ortho-para is 0.40 catalyzed by modifiedβ-zeolite in nitric acid/acetic anhydride system.

关 键 词：联苯 Β-沸石 选择性 硝化 

分 类 号：O643.36[理学—物理化学]