| 多齿配体改性的氧化锆色谱固定相表面吸附方式的研究 |
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| 引用本文： | 姚礼峰,冯钰锜,达世禄.多齿配体改性的氧化锆色谱固定相表面吸附方式的研究[J].高等学校化学学报,2005,26(2):244-246. |
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| 作者姓名： | 姚礼峰 冯钰锜 达世禄 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金;教育部优秀青年教师资助计划 |
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| 摘 要： | 氧化锆微球的化学稳定性好且机械强度高，作为色谱固定相基质具有很好的应用前景，利用其表面存在的大量的Lewis酸性中心与Lewis碱性化合物的强烈的酸碱作用可对氧化锆进行吸附改性，用无机磷酸、烷基膦酸APA、硬脂酸SA及乙二胺-N，N′-四亚甲基膦酸(EDTPA)等改性的氧化锆固定相被成功地用于中性、碱性甚至酸性化合物的分离。
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| 关 键 词： | 氧化锆 高效液相色谱固定相 Lewis碱 吸附方式 |
| 文章编号： | 0251-0790(2005)02-0244-03 |
| 收稿时间： | 2004-03-04 |
Adsorption Mode of Di-dentate Ligand Modified Zirconia Stationary Phase Surface |
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| YAO Li-Feng,FENG Yu-qi,DA Shi-Lu.Adsorption Mode of Di-dentate Ligand Modified Zirconia Stationary Phase Surface[J].Chemical Research In Chinese Universities,2005,26(2):244-246. |
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| Authors: | YAO Li-Feng FENG Yu-qi DA Shi-Lu |
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| Institution: | 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 |
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| 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-ZrO_2 and RNCP-ZrO_2 with ammonium molybdate indicate there are free phosphonic groups on the surface of the stationary phases, and the FTIR spectra of RNCC-ZrO_2 and RNCC-ZrO_2 indicate there are free carboxyl groups. The RCC-ZrO_2 is far more stable than RNCC-ZrO_2 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. |
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| Keywords: | Zirconia HPLC stationary phase Lewis base Adsorption mode |
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