酒石酸修饰碳纳米管的制备及其在拆分普萘洛尔对映体中的应用
首发时间:2012-07-23
摘要:在加热回流条件下,以双氧水氧化了多壁碳纳米管,引入羧基及羟基。在对甲苯磺酸的催化下,将其与D-酒石酸发生酯化反应,制备得到酒石酸接枝的多壁碳纳米管。采用红外光谱、高分辨透射电镜表征了产品,确证了修饰基团及多壁碳纳米管的形貌变化。将D-酒石酸修饰的多壁碳纳米管用于固载薄层色谱拆分了普萘诺尔对映体,分离度达6.73。研究表明,碳纳米管有望用于拆分手性化合物,改善拆分效果。
关键词: 分析化学 多壁碳纳米管 D-酒石酸 拆分 薄层色谱
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Preparation of tartaric acid modified carbon nanotubes and their application in enantioseparation of propranolol enantiomers
Abstract:In this paper hydrogen peroxide was used to oxidize multi-walled carbon nanotubes (MWCNTs) with a heating circumfluence method, and hydroxyl groups, carboxyl groups were introduced onto MWCNTs. Catalyzed by p-toluenesulfonic acid, D-tartaric acid was grafted onto MWCNTs. Fourier transform infrared spectroscopy and high resolution transmission electron microscopy were used to elucidate the introduced groups and the morphologies changes of the products. The D-tartaric acid modified MWCNTs were used as impregnated chiral selectors for thin-layer chromatography to enantioseparate propranolol enantiomers, Rs was achieved 6.73. Carbon nanotubes shows potential use for resolution of RS enantiomers.
Keywords: Analytical Chemistry Multi-walled carbon nanotubes D-tartaric acid Enantioseparation Thin-layer chromatography
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No.4484917660155134****
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酒石酸修饰碳纳米管的制备及其在拆分普萘洛尔对映体中的应用
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