研究论文

光催化甲醇重整机理的原位核磁共振研究

  • 刘文卿 ,
  • 宋艳红 ,
  • 王雪璐 ,
  • 姚叶锋
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  • 华东师范大学 物理与材料科学学院, 上海市磁共振重点实验室, 上海 200062

收稿日期: 2018-01-06

  网络出版日期: 2018-11-26

基金资助

国家自然科学基金资助项目(21603073).

In Operando Nuclear Magnetic Resonance Spectroscopy Study on Photocatalytic Methanol Reforming

  • LIU Wen-qing ,
  • SONG Yan-hong ,
  • WANG Xue-lu ,
  • YAO Ye-feng
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  • Shanghai Key Laboratory of Magnetic Resonance, College of Physics and Materials Science, East China Normal University, Shanghai 200062, China

Received date: 2018-01-06

  Online published: 2018-11-26

摘要

本文利用原位核磁共振技术在真实固液反应环境中对光催化甲醇重整过程进行了研究.研究发现,体系中甲醇重整的液态中间产物主要有四种:HOCH2OH、CH3OCH2OH、HCOOH和HCOOCH3.不同晶型的二氧化钛催化剂会影响这四种产物的生成趋势.随光照时间的增加,上述四种产物的含量均会增加.Pd负载对一级中间产物CH3OCH2OH和HOCH2OH的产率影响较大,其产率为无Pd负载的2~3个数量级;对二级中间产物HCOOCH3和HCOOH的产率影响较小.

本文引用格式

刘文卿 , 宋艳红 , 王雪璐 , 姚叶锋 . 光催化甲醇重整机理的原位核磁共振研究[J]. 波谱学杂志, 2019 , 36(3) : 298 -308 . DOI: 10.11938/cjmr20182680

Abstract

The reaction of photocatalytic methanol reforming in a real solid-liquid reaction environment was studied by in operando nuclear magnetic resonance (NMR) spectroscopy. Four liquid-state intermediate products were detected in the reaction systems investigated, including HOCH2OH, CH3OCH2OH, HCOOH and HCOOCH3. It was also demonstrated that the crystal types of TiO2 catalysts had a strong influence on the production of the four intermediate products. And the contents of the four products increased with the increasing illumination time. Palladium (Pd) loading enhanced the production of CH3OCH2OH and HOCH2OH by 2~3 orders of magnitude, but had little effects on the production of HCOOCH3 and HCOOH.

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