中文摘要：

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0.5 g该催化剂作用下进行选择性氧化反应2 h,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.

英文摘要：

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.