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Porous Silica Beads Supported TEMPO and Adsorbed NO x (PSB‐TEMPO/NO x ): An Efficient Heterogeneous Catalytic System for the Oxidation of Alcohols under Mild Conditions
Author(s) -
Di Lei,
Hua Zhang
Publication year - 2011
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.201000876
Subject(s) - chemistry , catalysis , alcohol oxidation , adsorption , heterogeneous catalysis , porosity , nuclear chemistry , organic chemistry , chemical engineering , engineering
The combination of NO x 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/NO x ) 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.