高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (11): 2016-2018.

• 研究简报 • 上一篇    下一篇

溶胶-凝胶法制备高热稳定性的毛细管气相色谱柱

梁敏敏, 齐美玲, 傅若农, 邵青龙   

  1. 北京理工大学理学院化学系, 北京100081
  • 收稿日期:2004-01-05 出版日期:2004-11-24 发布日期:2004-11-24
  • 基金资助:

    科技部重大专项基金(批准号:2002BA906A2923)资助

Preparation of Capillary Gas Chromatographic Columns with High Thermal Stability by Sol-gel Method

LIANG Min-Min, QI Mei-Ling, FU Ruo-Nong, SHAO Qing-Long   

  1. Department of Chemistry, School of Science, Beijing Institute of Technology, Beijing 100081, China
  • Received:2004-01-05 Online:2004-11-24 Published:2004-11-24

关键词: 裂解气相色谱, 溶胶-凝胶, 热稳定性, 环糊精

Abstract: Perethylated-β-CD, perpentylated-β-CD and 2,6-di-O-pentyl-β-CD were coated onto the fused silica capillary by sol-gel process. The thermal stability of the three sol-gel columns was investigated by pyrolysis gas chromatography(PyGC). The PyGC results show that the sol-gel CDs columns have an outstanding thermal stability, compared with the conventional CDs columns. The temperature of preliminary pyrolysis of the CDs in sol-gel net can be as high as 300 ℃, of the alkylated-β-CDs are at 200℃. The column performances were also studied. The results show that the sol-gel CDs columns have a good separation ability to the disubstituted benzene isomers such as cresols and xylene isomers.

Key words: Pyrolysis gas chromatography, Sol-gel, Thermal stability, Cyclodextrin

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