高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (2): 244.

• 研究简报 • 上一篇    下一篇

多齿配体改性的氧化锆色谱固定相表面吸附方式的研究

姚礼峰1,2, 冯钰锜1, 达世禄1   

  1. 1. 武汉大学化学与分子科学学院,武汉 430072;
    2. 武汉理工大学理学院化学系,武汉 430070
  • 收稿日期:2004-03-04 出版日期:2005-02-10 发布日期:2005-02-10
  • 通讯作者: 达世禄(1939年出生),男,教授,博士生导师,从事高效液相色谱研究.E-mail:dashilu@public.wh.hb.cn E-mail:dashilu@public.wh.hb.cn
  • 基金资助:

    国家自然科学基金(批准号:20475040);教育部优秀青年教师资助计划资助

Adsorption Mode of Di-dentate Ligand Modified Zirconia Stationary Phase Surface

YAO Li-Feng1,2, FENG Yu-Qi1, DA Shi-Lu1   

  1. 1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China;
    2. Department ofChemistry, College of Science, Wuhan University of Technology, Wuhan 430070, China
  • Received:2004-03-04 Online:2005-02-10 Published:2005-02-10

关键词: 氧化锆, 高效液相色谱固定相, Lewis碱, 吸附方式

Abstract: Various zirconia stationary phases were prepared by modification with di-dentate Lewis bases: dodecyl-N,N-diacetic acid(RNCC), dodecyl-N-acetic acid-N-methyleneposphonic acid(RNCP), dodecyl-N,N-dimethylenephosphonic acid(RNPP) and dodecencylsuccinic acid(RCC). The color reaction of RNPP-ZrO2 and RNCP-ZrO2 with ammonium molybdate indicate there are free phosphonic groups on the surface of the stationary phases, and the FTIR spectra of RNCC-ZrO2 and RNCC-ZrO2 indicate there are free carboxyl groups. The RCC-ZrO2 is far more stable than RNCC-ZrO2 under alkali station. The results of color reaction, FTIR spectra and the stability test of stationary phases suggest that, due to the chelating effect, RNCC, RNCP and RNPP adsorb on zirconia with only one carboxyl or phosphonic group, however, RCC adsorb on zirconia with two carboxyl groups.

Key words: Zirconia, HPLC stationary phase, Lewis base, Adsorption mode

中图分类号: 

TrendMD: