| 肖毅,黄红梅,尹笃林,寻友益,王振宇,刘艳,王季惠.VOSO4/活性炭在常压合成丙酮酸乙酯中的催化作用[J].分子催化,2010,(4): |
| VOSO4/活性炭在常压合成丙酮酸乙酯中的催化作用 |
| Catalytic Effect of VOSO4/ACO on the Synthesis of Ethyl Pyruvate at Atmospheric Pressure |
| 投稿时间：2010-04-05 修订日期：2010-05-09 |
| DOI： |
| 中文关键词: VOSO4/活性炭 分子氧 催化氧化 乳酸乙酯 丙酮酸乙酯 |
| 英文关键词:VOSO4/ACO molecular oxygen catalytic oxidation ethyl lactate ethyl pyruvate |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘要点击次数: 2037 |
| 全文下载次数: 16 |
| 中文摘要: |
| 以氧化改性活性炭为载体,用浸渍法制备了系列VOSO4/活性炭催化剂(VO/ACO). 采用FT-IR、XRD、ICP和比表面及孔结构测定等表征了催化剂组成与结构. 考察了VO/ACO催化剂在常压分子氧氧化乳酸乙酯中的催化作用. 结果表明, 氧化活性炭是氧钒催化剂的有效载体,以pH=3的VOSO4溶液浸渍得到的VO-3/ACO催化剂具有优良的催化性能, 在二氯乙烷中常压，80 ℃ 反应18 h, 乳酸乙酯转化完全, 丙酮酸乙酯的选择性达95.2%. 催化剂重复使用三次后的性能基本保持不变. |
| 英文摘要: |
| A series of VOSO4/ACO (VO/ACO) catalysts were prepared from oxygenated activated carbon (ACO) by impregnation. The composition and structure of 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. Results showed that modified activated carbon was an efficient support for catalysts containing VO2 . Good catalyst 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 ℃, 18 h and atmospheric pressure. The catalyst could be repeatedly used for three times without remarkable loss of activity. |
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