催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (3): 212-214.

• 研究快讯 • 上一篇    下一篇

活性炭担载硅钨酸催化甘油脱水制丙烯醛

宁丽丽1,2,丁云杰2,3,陈维苗2,龚磊峰2,4,林荣和2,4,吕元2,辛勤3   

  1. 1 辽宁师范大学化学化工学院, 辽宁大连 116029; 2 中国科学院大连化学物理研究所, 辽宁大连 116023; 3 中国科学院大连化学物理研究所催化基础国家重点实验室, 辽宁大连 116023; 4 中国科学院研究生院, 北京 100049
  • 收稿日期:2008-03-25 出版日期:2008-03-25 发布日期:2012-03-01

Glycerol Dehydration to Acrolein over Activated Carbon-Supported Silicotungstic Acids

NING Lili1,2, DING Yunjie2,3*, CHEN Weimiao2, GONG Leifeng2,4, LIN Ronghe2,4, L　Yuan2, XIN Qin3   

  1. 1 College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, Liaoning, China; 2 Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China; 3 State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China; 4 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2008-03-25 Online:2008-03-25 Published:2012-03-01

PDF

1228

被引次数

77

摘要： 合成了活性炭(AC)担载的硅钨酸(H4[SiW12O40]·nH2O, HSiW)催化剂,并研究了其对甘油脱水制丙烯醛的催化性能. 结果表明, 10%HSiW/AC催化剂具有较高的活性和选择性,反应生成丙烯醛的时空收率可达68.5 mmol/(g\5h), 为文献报道的最好结果之一. 催化剂的性能与催化剂表面杂多酸的分散度以及强酸中心的相对数量密切相关.

关键词: 硅钨酸, 活性炭, 负载型催化剂, 甘油, 脱水, 丙烯醛

Abstract: Activated carbon(AC)-supported silicotungstic acid (H4[SiW12O40]·nH2O, HSiW) catalysts were employed to produce acrolein from glycerol dehydration. The results indicated that catalysts with 10% HSiW loading exhibited the highest activity and selectivity. The space time yield of acrolein reached 68.5 mmol/(g\5h), which is the best result ever reported in the literature. The properties of the catalysts were closely related to the HSiW dispersion and the relative quantities of strong acid sites.

Key words: silicotungstic acid, activated carbon, supported catalyst, glycerol, dehydration, acrolein