气相色谱-质谱表征甲醇制烯烃副产汽油中的C_5～C_7烯烃  

Characterization of C_5-C_7 alkenes in gasoline from methanol to olefins process using gas chromatography-mass spectrometry

作　　者：李继文[1] 李薇[1] 王川[1] 

机构地区：[1]上海石油化工研究院,上海201208

出　　处：《色谱》2013年第11期1134-1139,共6页Chinese Journal of Chromatography

基　　金：中国石油化工集团公司科技攻关项目(项目号:19)

摘　　要：采用气相色谱-质谱（GC-MS）对甲醇制烯烃（MTO）副产汽油中的C5～C7烯烃进行了详细的定性表征,对MTO副产汽油中的49个单烯烃、11个二烯烃和9个环烯烃共计69个C5～C7烯烃组分在聚甲基硅氧烷柱上的保留指数进行了测定和定性确认.根据GC-MS定性分析结果建立了 MTO副产汽油中C5～C7烯烃的保留指数数据库,采用气相色谱对副产汽油中C5～C7烯烃组分进行了定量分析.定量结果表明：MTO汽油以C5～C7脂肪族烯烃为主,含有少量的二烯烃和环烯烃,烷烃和环烷烃含量很少.MTO副产汽油中C5～C7烯烃的详细表征为其综合利用提供了依据.Gas chromatography-mass spectrometry （GC-MS） qualitative characterization of C5 -C7 alkenes in gasoline from methanol to olefins （MTO） was investigated in detail.It showed that the retention indices of 49 alkenes,1 1 alkadienes and 9 cycloalkenes,a total of 69 C5-C7isomeric alkenes were determined and qualitatively confirmed.The retention indices of all C5-C7 alkenes in MTO gasoline were measured on polydimethylsiloxane as the stationary phase.According to the library of retention indices by GC-MS characterization,the contents of C5-C7alkenes in MTO gasoline were analyzed by GC and characterized by its composition of hydrocarbon categories.The results of quantitative analysis showed that the composition of MTO gasoline mainly consisted of C5-C7 alkenes,and a small amount of alkadienes and cycloalkenes.The contents of alkanes and cycloalkanes existed in MTO gasoline were very low.The study of the composition is helpful for the comprehensive application of MTO gasoline.

关 键 词：气相色谱 质谱 烯烃 汽油 甲醇制烯烃 

分 类 号：O658[理学—分析化学]