高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (3): 375-376.doi: 10.7503/cjcu20200056

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分子围栏催化剂用于甲烷低温氧化制甲醇

申文杰   

  1. 中国科学院大连化学物理研究所, 大连 116023
  • 收稿日期:2020-01-31 出版日期:2020-02-21 发布日期:2020-02-07
  • 作者简介:申文杰, 男, 博士, 研究员, 博士生导师, 主要催化材料和催化反应过程的应用基础研究. E-mail: shen98@dicp.ac.cn

Molecular-fence Catalysts for Low-temperature Oxidation of Methane to Methanol

SHEN Wenjie   

  1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
  • Received:2020-01-31 Online:2020-02-21 Published:2020-02-07

摘要:

《Science》杂志最近刊发了浙江大学肖丰收团队关于甲烷低温选择性氧化研究的重要进展. 基于分子围栏的概念, 作者构筑了一种具有疏水壳层结构的沸石分子筛封装金属纳米粒子, 利用原位生成的过氧化氢氧化甲烷制备甲醇. 他们报道在甲烷的转化率高达17.3%的同时保持了92%的甲醇选择性, 基于金属含量的甲醇产率高达91.6 mmol· g AuPd - 1 ·h -1.

关键词: 分子筛, 疏水性, 甲烷氧化, 分子扩散

Abstract:

Selective oxidation of methane to methanol often suffers from the low reaction efficiency. Based on the concept of molecular fence effect, Xiao and co-workers reported a heterogeneous catalyst system for strengthening methane oxidation by the in-situ generated hydrogen peroxide at mild temperatures. They achieved a 17.3% conversion of methane and 92% selectivity toward methanol, giving a methanol productivity of 91.6 millimoles per gram of AuPd per hour. This work has been published online in Science in Jan.10, 2020.

Key words: Zeolite, Hydrophobicity, Methane oxidation, Molecular diffusion

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