期刊
ADVANCED SYNTHESIS & CATALYSIS
卷 345, 期 3, 页码 383-388出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.200390043
关键词
glycerol; heterogeneous catalysis; oxidation; sodium hypochlorite; sol-gel catalyst; TEMPO
Glycerol, an increasingly abundant by-product of biodiesel production, is selectively converted to ketomalonic acid in one pot at pH 10 using NaOCl as regenerating oxidant in water at 2 degreesC in the presence of catalytic Br- along with the radical TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl). The reaction can also be conducted at completion over a sol-gel silica glass doped with the nitroxyl radical. Considering the stability and versatility of such doped glasses, these materials show real promise as reusable metal-free catalysts for the conversion of a readily available and renewable biofeedstock into a highly valued compound.
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