原油中中性氮和烷基酚化合物的分离制备及分析应用

SEPARATION AND DETERMINATION OF NEUTRAL NITROGEN COMPOUNDS AND ALKYLPHENOLS IN CRUDE OIL

王汇彤 徐冠军 游建昌 王培荣 张大江

WANG Huitong XU Guanjun YOU Jianchang WANG Peirong ZHANG Dajiang

中国石油, 油气地球化学重点实验室, 北京, 100083 2. 中国石油, 石油勘探开发科学研究院, 实验中心, 北京, 100083

The Key Laboratory of Petroleum Geochemistry, CNPC, Beijing 100083, China 2. Experimental Center, Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083, China

该文介绍了一种原油中中性氮化合物和烷基酚化合物分离制备的新方法.在自制的C18非极性填料的层析柱上,用正己烷淋洗除去沥青质的原油样品,除去饱和烃、芳烃,继续用正己烷淋洗,制备出中性氮化合物;再用二氯甲烷淋洗得到烷基酚化合物.实验证明,方法的稳定性和重复性令人满意,同其它的方法相比,节省试剂、分析周期短,中性氮化合物纯度较高.

A new method to simultaneously separate neutral nitrogen compounds and alkylphenols from crude oil was introduced in this paper.The crude oil in which asphaltane has been removed is put into a non polar C18 column,and the column is eluted by 15mL of hexane and 15mL of dichloromethane in turn.Most saturated hydrocarbon and aromatic hydrocarbon are eluted out after 5mL of hexane has been used.The neutral nitrogen compounds are separated after 6mL of hexane is added and the alkylphenols are obtained as soon as dichloromethane is added.The experiment results showed that the repeatability and stability of the method were satisfied.There are some advantages such as fewer regents,shorter proces sing time and purer neutral nitrogen compounds,compared with other methods.

https://doi.org/10.11781/sysydz200303310