色谱法测定异丁烯中的二甲醚等含氧化合物杂质  

Determination of DME and Other Oxygenated Compounds in Isobutene by Gas Chromatography

作　　者：李继文[1] 冯钰安[1] 

机构地区：[1]上海石油化工研究院标准化室,上海201208

出　　处：《石油化工》2004年第1期65-67,共3页Petrochemical Technology

摘　　要：采用CP-PorabondQPLOT(0 32mm×25m×5μm)毛细管色谱柱对异丁烯中的二甲醚等含氧化合物杂质进行了气相色谱方法研究。结果表明,该色谱柱能很好地分离异丁烯中的二甲醚等含氧化合物杂质;使用液相进样阀液态直接进样保证了试样的代表性。该方法是一种快速、准确、安全地分析异丁烯中二甲醚等含氧化合物杂质的方法。A method for the determination of dimethylether (DME),methanol,methyl tert-butyl ether (MTBE)　and tert-butyl alcohol in isobutene was investigated.The chromatogram obtained with a capillary column CP-Porabond Q PLOT (0.32 mm×25 m×5 μm) showed that these oxygenated compounds were well separated and their contents in isobutene could be easily and quantitatively determined.The liquid-phase sample injection valve ensured the sampling reproducibility.The method provided was rapid,accurate and reliable for the use in isobutene related chemical plants.

关 键 词：气相色谱 异丁烯 二甲醚 甲基叔丁基醚 甲醇 叔丁醇 液相进样 

分 类 号：TE622.14[石油与天然气工程—油气加工工程]