Even-carbon predominance of Monomethyl branched alkanes in Humic coal from Junggar Basin,NW China

作者：Qingsong Cheng,Min Zhang,Guanghui Huang

摘要：A series of Monomethyl branched alkanes compounds were detected between nC14-nC36,in immature and low maturity Jurassic humic coal,Junggar basin.2-methyl alkanes and 3-methyl alkanes accounted for the vast majority of the compounds.It is worth noting that the2-methyl alkanes in the humic coal samples show an obvious distribution of even carbon predominances rarely reported in the literature.The results show that with the increase of Pr/Ph(pristane/phytane),the even carbon dominance of 2-methyl alkanes is more obvious,while the odd carbon number distribution of 3-methyl alkanes is weakened.As Pr/Ph increases in the humic coal,the relative content of the hopanes increased,while the relative content of 2-methyl alkanes and 3-methyl alkanes increases first and then decreases.

发文机构：College of Resources and Environment Key Laboratory of Exploration Technology for Oil&Gas Research（Yangtze University）

关键词：JunggarbasinHumiccoalEvencarbonpredominance2-methylalkanes3-methylalkanes

分类号： O62[理学—有机化学]