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Indexed by:期刊论文

Date of Publication:2011-05-01

Journal:ADVANCED SYNTHESIS & CATALYSIS

Included Journals:Scopus、SCIE

Volume:353

Issue:8

Page Number:1253-1259

ISSN No.:1615-4150

Key Words:aerobic oxidation; heterogeneous catalysis; immobilization; NOx adsorption; 4-oxo-TEMPO; porous silica beads; 2,2,6,6-tetramethylpiperdine 1-oxyl

Abstract:The combination of NOx gas which is stored in the pore canals of porous silica beads (PSB) with a heterogeneous catalyst, PSB-supported 2,2,6,6-tetramethylpiperdine 1-oxyl (PSB-TEMPO, 1), afforded a highly efficient, widely applicable, and efficiently recyclable approach for the selective aerobic oxidation of alcohols. This novel catalytic system (PSB-TEMPO/NOx) can be employed in the oxidation of a wide range of alcohols to their corresponding aldehydes and ketones with selectivities as high as 99% at complete conversions under mild conditions. O-2 is the terminal oxidant. PSB-TEMPO can be recycled for more than 10 times without significant loss of activity.