催化学报 ›› 2013, Vol. 34 ›› Issue (10): 1848-1854.DOI: 10.1016/S1872-2067(12)60657-3

• 研究论文 • 上一篇    下一篇

吸附NOx的功能化硅胶用于催化温和条件下醇的选择性氧化

张华, 付罗岭, 钟红敏   

  1. 大连理工大学精细化工国家重点实验室, 辽宁大连116024
  • 收稿日期:2013-05-26 修回日期:2013-07-10 出版日期:2013-09-29 发布日期:2013-09-29
  • 基金资助:

    长江学者和创新团队发展计划(IRT0711).

Silica gel-supported TEMPO with adsorbed NOx for selective oxidation of alcohols under mild conditions

Hua Zhang, Luoling Fu, Hongmin Zhong   

  1. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, Liaoning, China
  • Received:2013-05-26 Revised:2013-07-10 Online:2013-09-29 Published:2013-09-29
  • Contact: Hua Zhang
  • Supported by:

    This work was partially supported by the Program for Changjiang Scholars and Innovative Research Team in University (IRT0711).

摘要:

利用接枝方式将2,2,6,6-四甲基哌啶(TEMPO)固载到SPE柱填料硅胶上制备了功能化硅胶,其吸附NOx应用于催化醇的选择性氧化反应中. 并利用元素分析、红外光谱、N2吸附-脱附和NOx程序升温脱附对催化剂进行了考察. 结果表明,所制备催化剂中TEMPO固载量为0.292 mmol/g,NOx吸附量为0.749 mmol/g; 常温常压下1 mmol芳香醇在0.5g该催化剂作用下进行选择性氧化反应2h,原料转化率和产物选择性均高达99%. 该催化剂提高了醇分子在孔道内部与TEMPO和NOx接触几率,促进了反应进行,根据反应现象,对该体系催化机理进行了推测.

关键词: 硅胶, 四甲基哌啶酮, 氮氧化物, 多相催化, 醇氧化

Abstract:

A column padding silica gel was used to support 2,2,6,6-tetramethylpiperdine-1-oxyl (TEMPO) and to adsorb NOx to provide an oxidant system for the selective oxidation of alcohols. A wide range of alcohols were oxidized to the corresponding aldehydes and ketones with high selectivities and conversions using this heterogeneous catalyst under mild conditions.

Key words: Silica, 2,2,6,6-tetramethylpiperdine-1-oxyl, Nitrogen oxide, Heterogeneous catalysis, Alcohol oxidation