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以纯聚偏二氯乙烯为原料,经过热降解反应可以获得一种极其非极性的、有很大比表面积的新型色谱担体——碳分子筛。本文通过对碳分子筛制备和性能的探讨,提出了碳分子筛柱在微量杂质分析方面的应用。工作结果表明,以柱长仅0.5米的碳分子筛作为固定相的气体色谱法,对石油气分离加氢工艺中微量乙炔的定量分析,显示了快速、灵敏、准确、简便的优点,且柱寿命也很长。
Pure polyvinylidene chloride as a raw material, through the thermal degradation reaction can be obtained a very non-polar, has a large surface area of the new chromatographic support - carbon molecular sieve. In this paper, carbon molecular sieve preparation and properties of the proposed carbon molecular sieve column trace impurities in the application. The results show that the quantitative analysis of trace amount of acetylene in the process of separation and hydrogenation of liquefied petroleum gas by gas chromatography with carbon molecular sieve with column length of only 0.5 m as the stationary phase shows the advantages of rapid, sensitive, accurate and simple, and the column lifetime It is also long.