Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 50, Issue -, Pages 288-296Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.indcrop.2013.07.047
Keywords
Modified sugarcane bagasse; Cobalt; Chromium; Catalytic oxidation; Monoterpenes
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This study describes the applicability of two chemically modified sugarcane bagasses containing either adsorbed Co2+ or Cr3+ ions as heterogeneous catalysts for the autooxidation of monoterpenes. The main objective was to investigate new uses for these adsorbent materials which had been previously employed for treatment of aqueous solutions or effluents containing metals such as Co2+ and Cr3+. The adsorption efficiency of Co2+ and Cr3+ on SCB2 and EB was evaluated by adsorption isotherms and other techniques such as XRD, ICP-AES and TGA. Catalytic activity of the four new catalysts, SCB2-Co, SCB2-Cr, EB-Co, and EB-Cr, were assessed in the oxidation reaction of beta-citronellol(1), (+)-limonene(2), and (-)-beta-pinene(3) in a free solvent system. Results obtained demonstrated that these materials were promising catalysts for the oxidation of monoterpenes. Reactant conversion ranged from 49 to 78% as determined by GC analysis and a combined selectivity up to 59% for the oxidation products was achieved. (C) 2013 Elsevier B.V. All rights reserved.
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