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

Qingsong Cheng; Min Zhang; Guanghui Huang

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

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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.

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《中国地球化学学报：英文版》 |2020年第3期|434-444|共11页
作者
Qingsong Cheng; Min Zhang; Guanghui Huang;
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作者单位

College of Resources and Environment;

Yangtze University;

Wuhan 430100;

China;

Key Laboratory of Exploration Technology for Oil&Gas Research(Yangtze University);

Ministry of Education;

Wuhan 430100;

China;

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原文格式 PDF
正文语种 chi
中图分类有机化学;
关键词
Junggar basin; Humic coal; Even carbon predominance; 2-methyl alkanes; 3-methyl alkanes;

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

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