Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2011-05-01

Journal: ADVANCED SYNTHESIS & CATALYSIS

Included Journals: SCIE、Scopus

Volume: 353

Issue: 8

Page Number: 1253-1259

ISSN: 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.