C_5馏分及其羰化产物的毛细管气相色谱分析

Analysis of C_5 Fractions and Carbonyl Compounds by Capillary Gas Chromatography

石油裂解副产物C5馏分及其羰化产物是成分较为复杂的混合物，尤其是C5馏分中1，3-环戊二烯和顺-1，3-戊二烯的物性更为接近。用SE－54弹性石英毛细管柱和角鲨烷玻璃毛细管柱分别对C5馏分及其羰化产物进行了分析，使各组分达到了很好的分离。

We used two capillary columns with different characters -SE-54 (30 m×0. 25 mm) and Squalane (92 m×0. 24 mm) to analyse C5 fractions and carbonyl compounds in the mixtures of complex chemical composition. The physical properties of some components are very similar, especially for 1,3-cyclopentadiene and ets-1,3-pentadiene. 1,3-Cyclopentadiene in the feed will directly affect the activity of catalyst. In the past we only used SE-54 column to separate 1, 3-cyclopentadiene and ets-1, 3-pentadiene, but the results were unsatisfactory. Later we found that squalane column could separate them fairly good, but it could not yet separate dicyclopentadiene from 1, 3-cyclopentadiene and carbonyl compounds in C, fractions very well. In this work SE-54 capillary column and squalane capillary column were used together to analyse C5 fractions, and SE-54 column was used to analyse carbonyl compounds. The results are satisfactory.