介孔氮化碳负载氧化钒催化苯甲醇选择氧化反应  

Vanadia Supported on Mesoporous Carbon Nitride as a New Catalyst for Selective Oxidation of Benzyl Alcohol

作　　者：尚介坤 王悦[1] 蒋权[1] 许杰[1] 李永昕[1] 

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《常州大学学报（自然科学版）》2016年第4期13-20,共8页Journal of Changzhou University：Natural Science Edition

基　　金：国家自然科学基金(21203014);江苏省普通高校学术学位研究生科研创新计划(KYLX_1097;KYLX15_1119);江苏省高校优势学科建设工程资助项目

摘　　要：制备一系列介孔石墨相氮化碳负载氧化钒催化剂(V/CND)。通过N2吸-脱附、小角X射线散射、透射电镜、X射线衍射、拉曼光谱、傅里叶红外光谱、X射线光电子能谱等表征手段对V/CND材料的结构、形貌等理化性质进行表征。在苯甲醇选择氧化反应中,V/CND催化剂表现出较高的催化活性及良好的循环使用性。与传统载体材料(SBA-15、碳纳米管和活性炭)相比,V/CND催化剂具有更高的选择性(>84%)。测试结果表明催化剂活性中心是分散的氧化钒物种。CND材料作为一种碱性载体可以有效地抑制苯甲醛的深度氧化。Mesoporous graphitic carbon nitride （CND） was prepared and used as a catalytic support to load vanadia. The obtained V/CND materials were characterized by several characterization techniques including N2 adsorption-desorption, SAXS, TEM, XPS, Raman, FT-IR, and XPS spectroscopy. In the selective ox- idation reactions of benzyl alcohol, the V/CND showed high catalytic performances and good recyclability, especially superior selectivities （〉 84%） to the values obtained over other vanadia catalysts supported on traditional materials （SBA-15, carbon nanotubes, and active carbon）. As revealed by FT-IR and XPS re- sults, the active sites were attributed to the dispersed vanadia species. More importantly, the basic chemi- cal environment of the CND support was regarded to effectively restrain the deep oxidation of benzalde- hyde.

关 键 词：氮化碳 介孔材料 氧化钒 氧化反应 

分 类 号：O643[理学—物理化学]