催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (3): 463-467.DOI: 10.3724/SP.J.1088.2011.00928

• 研究论文 • 上一篇    下一篇

SBA-15 负载硅钨酸催化环己酮 Baeyer-Villiger 氧化

杨志旺, 马振宏, 牛棱渊, 马国富, 马恒昌, 雷自强   

  1. 西北师范大学化学化工学院, 生态环境相关高分子材料教育部重点实验室, 甘肃省高分子材料重点实验室, 甘肃兰州 730070
  • 收稿日期:2010-10-21 修回日期:2010-11-15 出版日期:2011-03-04 发布日期:2014-08-01

Baeyer-Villiger Oxidation of Cyclohexanone Catalyzed by SBA-15 Supported Silicotungstic Acid

YANG Zhiwang, MA Zhenhong, NIU Lengyuan, MA Guofu, MA Hengchang, LEI Ziqiang*   

  1. Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
  • Received:2010-10-21 Revised:2010-11-15 Online:2011-03-04 Published:2014-08-01

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摘要： 采用浸渍法制备了H4O40SiW12/SBA-15 催化剂, 通过红外光谱、X 射线衍射、N2 吸附-脱附和透射电镜等方法对催化剂进行了表征. 结果表明, H4O40SiW12 能均匀分散于 SBA-15 的孔道中, 催化剂仍保持载体的介孔结构和硅钨酸的 Keggin 型结构. 将催化剂用于环己酮的 Baeyer-Villiger 氧化反应中, 考察了催化剂用量、温度和时间等对反应性能的影响. 当催化剂用量为 10 mg, 在 70 oC 反应 8 h 时, 环己酮转化率达 86%, 产物内酯选择性可达 99%. 同时, 催化剂具有一定的重复使用性能.

关键词: 环己酮, Baeyer-Villiger 氧化反应, 内酯, 硅钨酸, SBA-15 分子筛

Abstract: Silicotungstic acid (H4O40SiW12) was supported on SBA-15 with the content of 20% by impregnation. The structure and properties of the catalyst were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, N2 adsorption-desorption, and transmission electron microscopy. H4O40SiW12 was highly dispersed on SBA-15 without structural change. The material was applied as an efficient catalyst for the Baeyer-Villiger oxidation of cyclohexanone under different conditions such as the catalyst amount, reaction temperature, and reaction time. When 10 mg of catalyst was used, the cyclohexanone conversion and selectivity for lactone were up to 86% and 99%, respectively, at 70 oC for 8 h. The catalyst had moderate reusability in the oxidation system.

Key words: cyclohexanone, Baeyer-Villiger oxidation, lactone, silicotungstic acid, SBA-15 zeolite