XIAO Yi1, 2, HUANG Hong-mei1 , YIN Du-lin1, 2*, XUN You-yi2, WANG Zhen-yu2, LIU Yan2, WANG Ji-hui3
(1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education; 2. Institute of Fine Catalysis and Synthesis; 3. Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province, Hunan Normal University, Changsha 410081, Hunan, China)
Abstract: A series of VOSO4/ACO (VO/ACO) catalysts were prepared by impregnation with oxygenated activated carbon (ACO) as support. The composition and structure of the prepared catalysts were characterized by FT-IR, XRD, BET and ICP. The catalytic effect of VO/ACO on the oxidation of ethyl lactate with molecular oxygen was investigated under atmospheric pressure. The results showed that modified activated carbon was an efficient support for catalysts containing VO2+. A VO-3/ACO can be obtained by impregnation in aqueous VOSO4 (pH=3), which provided 95.2 % selectivity for ethyl pyruvate and complete conversion of ethyl lactate in dichloroethane (DCE) under the conditions of 80 ℃ and atmospheric pressure after running the reaction for 18 h . The catalyst could be repeatedly used for three times without remarkable loss of its reactivity.
Key words: VOSO4/ACO; Molecular oxygen; Catalytic oxidation; Ethyl lactate; Ethyl pyruvate
E-mail: dulinyin@ 126. com
Journal of Molecular Catalysis, Vol. 24, Issue 4, 2010, 298~303
