蓬莱原油初馏点～350℃馏分中石油羧酸的结构组成  

STRUCTURE AND COMPOSITION OF CARBOXYLIC ACIDS IN <350?℃FRACTION OF PENGLAI CRUDE OI

作　　者：刘泽龙[1] 田松柏[1] 樊雪志[1] 杨明彪[1] 

机构地区：[1]中国石油化工股份有限公司石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2003年第6期40-45,共6页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：通过碱洗方法萃取蓬莱原油初馏点～ 35 0℃馏分中的酸性组分 ,甲酯化后经硅胶柱色谱分离得到石油羧酸酯 ,采用IR、GC/MS、FIMS和13 C NMR等方法对石油羧酸酯的结构组成进行了研究。结果表明 ,蓬莱原油初馏点～ 35 0℃馏分中的石油羧酸由脂肪酸、环烷酸 (包括单、双和三环烷酸 )和芳基酸 (包括烷基苯酸、单环烷基苯酸和二环烷基苯酸 )组成。其中环烷酸含量最高 ,占 85 .6 % ,芳基酸含量为 10 .2 % ,脂肪酸为 4 .2 %。The acid fraction isolated from IBP～350?℃ fraction of Penglai crude oil by using caustic extraction was methylated and then separated and purified by silica gel chromatography.The structure and composition of the purified carboxylic methyl esters were determined by IR,GC/MS,FIMS and NMR.Results indicated that the petroleum carboxylic acids in this fraction were aliphatic acids,naphthenic acids (including 1～3-ring naphthenic acids) and aromatic acids (including alylbenzoic acids,naphthenebenzoic acids and dinaphthenebenzoic acids).The amount of naphthenic acids ranked first,being 85.6%.Aromatic acids made up 10.2% and aliphatic acids 4.2%.

关 键 词：石油羧酸 结构组成 酸性组分 蓬莱原油 环烷基原油 

分 类 号：TE622.1[石油与天然气工程—油气加工工程]