Silica-immobilized chromium colloids for cyclohexane autoxidation

Abstract

(Figure Presented) In a stable condition: Oxyhydroxide colloids of chromium deposited on silica gel are selective, stable catalysts for the autoxidation of cyclohexane (CyH). The CrIII colloids, generated in situ, are immobilized by a column precipitation chromatographic technique (see picture). An increased yield of cyclohexanone (QO) is obtained. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.