固-液-气三相环境下非均相苯加氢反应的原位核磁共振研究  

An Operando Nuclear Magnetic Resonance Study on Solid-Liquid-Gas Heterogeneous Benzene Hydrogenation Reaction

作　　者：随松 高国梁 王雪璐 魏达秀 姚叶锋 SUI Song;GAO Guo-liang;WANG Xue-lu;WEI Da-xiu;YAO Ye-feng(Shanghai Key Laboratory of Magnetic Resonance,College of Physics and Materials Science,East China Normal University,Shanghai 200062,China)

机构地区：[1]上海市磁共振重点实验室,华东师范大学物理与材料科学学院,上海200062

出　　处：《波谱学杂志》2021年第2期194-203,共10页Chinese Journal of Magnetic Resonance

基　　金：国家自然科学基金资助项目(21603073,21574043).

摘　　要：本文使用原位核磁共振(NMR)方法成功实现了对固-液-气三相环境下加氢反应的在线监测.在反应过程中,无需分离产物.以Pd纳米颗粒粉末及不同晶面形貌的Pd催化剂作为研究对象,我们研究了反应压强、反应时间,以及催化剂表面性质对加氢反应的影响.结果表明,压强和反应时间都可以影响加氢反应产物的产率,使用暴露不同晶面的Pd共催化剂时,苯加氢产物不同.该原位NMR方法为研究固-液-气三相催化环境下的加氢反应机理提供了可能.The reaction of heterogeneous benzene hydrogenation reaction in a real solid-liquid-gas environment was studied by operando nuclear magnetic resonance(NMR)spectroscopy.During the reaction process,the products need not be separated before the test.Different catalysts(Pd nanoparticles and Pd with different crystal morphology)were performed to investigate the effects of pressure,reaction time and catalyst surface properties on benzene hydrogenation reaction.It was found that the pressure and the reaction time can affect the productivity of hydrogenation reaction,and the products of benzene hydrogenation reaction are determined by the exposed crystal surface of Pd catalysts.This operando NMR method provides a good opportunity to study the mechanism of solid-liquid-gas heterogeneous hydrogenation reaction.

关 键 词：原位核磁共振 苯的加氢反应 晶体形貌 液体核磁共振 非均相 

分 类 号：O482.53[理学—固体物理]