Separation of steranes and hopanes by domestic X-type molecular sieves

Domestic 10X-type and 13X-type molecular sieves were used for the adsorption and desorption experiments of steranes and hopanes, and their stable carbon isotopic fractionation by the two kinds of molecular sieves during separation process was discussed in detail. These two kinds of molecular sieves...

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Published inShi you shi yan di zhi Vol. 43; no. 4; pp. 713 - 720
Main Authors Erting LI, Baoli XIANG, Ji LI, Dilidaer ROUZI, Huitong WANG, Wanyun MA, Cuimin LIU, Xiaogang ZHANG
Format Journal Article
LanguageChinese
English
Published Editorial Office of Petroleum Geology and Experiment 28.07.2021
Subjects
biomarkers
compound specific carbon isotope
hopanes
molecular sieve
petroleum geochemistry
steranes
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Summary:Domestic 10X-type and 13X-type molecular sieves were used for the adsorption and desorption experiments of steranes and hopanes, and their stable carbon isotopic fractionation by the two kinds of molecular sieves during separation process was discussed in detail. These two kinds of molecular sieves have various adsorption effects on different types of compounds. They both have the weakest adsorption capacities for 5α, 14α, 17α-20S steranes, 5α, 14β, 17β-20R steranes and 5α, 14β, 17β-20S steranes, followed by 5α, 14α, 17α-20R steranes, β-carotane, and gammacerane. The 13X-type molecular sieve has stronger adsorption capacity for hopanes than that of the 10X-type molecular sieve, which can be used for the separation of hopanes. The 10X-type molecular sieve has stronger adsorption capacity for steranes than that of the 13X-type molecular sieve. By controlling the amount of eluent, different configuration of steranes can be further separated. The stable carbon isotopes of steranes and hopanes showed that no carbo
ISSN:1001-6112
DOI:10.11781/sysydz202104713