An improved column-chromatographic separation for polycyclic aromatic compounds in petroleum
The separation and preparation process of petroleum group components is the basis for the subsequent molecular composition and isotopic analysis. Due to the complex composition of isomers, the components of aromatic compounds prepared by traditional techniques still cannot meet the isotopic analysis...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Petroleum Geology and Experiment
2021-05-01
|
| Series: | Shiyou shiyan dizhi |
| Subjects: | |
| Online Access: | https://www.sysydz.net/cn/article/doi/10.11781/sysydz202103524 |
| _version_ | 1797277206878093312 |
|---|---|
| author | Xue LIU Meijun LI Youjun TANG Daxiang HE N'Guessan Francois De Sales KONAN Shengbao SHI Lei ZHU |
| author_facet | Xue LIU Meijun LI Youjun TANG Daxiang HE N'Guessan Francois De Sales KONAN Shengbao SHI Lei ZHU |
| author_sort | Xue LIU |
| collection | DOAJ |
| description | The separation and preparation process of petroleum group components is the basis for the subsequent molecular composition and isotopic analysis. Due to the complex composition of isomers, the components of aromatic compounds prepared by traditional techniques still cannot meet the isotopic analysis requirements of specific compounds. Two different separating methods were used to finely separate and prepare polycyclic aromatic hydrocarbons in crude oils. The "one-step method" was to directly pass the de-asphalted crude oil samples through an alumina/silica gel chromatography column, and elute them with different ratios of petroleum ether/dichloromethane mixed solvent. The "two-step method" firstly used conventional separation methods to obtain aromatic fraction from crude oils, and then applied the aromatic fraction to a column filled with alumina and sub-fractions with different ring numbers then eluted with mixed solvent with different ratios of petroleum ether/dichloromethane. Gas chromatography-mass spectrometry (GC-MS) analysis for the sub-fractions were carried out for the comparison between the two separation methods. Results show that the "two-step method" can better realize the separation and preparation of monocyclic, bicyclic and tricyclic aromatic compounds. The mixed solvents of petroleum ether/dichloromethane of V/V: 99/1, 9/1 and 8/2 can obtain monocyclic, bicyclic and tricyclic aromatic compounds respectively. |
| first_indexed | 2024-03-07T15:45:18Z |
| format | Article |
| id | doaj.art-3cd751bdd4cd41c78b9cbcb0c92a2881 |
| institution | Directory Open Access Journal |
| issn | 1001-6112 |
| language | zho |
| last_indexed | 2024-03-07T15:45:18Z |
| publishDate | 2021-05-01 |
| publisher | Editorial Office of Petroleum Geology and Experiment |
| record_format | Article |
| series | Shiyou shiyan dizhi |
| spelling | doaj.art-3cd751bdd4cd41c78b9cbcb0c92a28812024-03-05T04:38:56ZzhoEditorial Office of Petroleum Geology and ExperimentShiyou shiyan dizhi1001-61122021-05-0143352453110.11781/sysydz202103524sysydz-43-3-524An improved column-chromatographic separation for polycyclic aromatic compounds in petroleumXue LIU0Meijun LI1Youjun TANG2Daxiang HE3N'Guessan Francois De Sales KONAN4Shengbao SHI5Lei ZHU6Key Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education, Yangtze University, Wuhan, Hubei 430100, ChinaKey Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education, Yangtze University, Wuhan, Hubei 430100, ChinaKey Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education, Yangtze University, Wuhan, Hubei 430100, ChinaKey Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education, Yangtze University, Wuhan, Hubei 430100, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, ChinaThe separation and preparation process of petroleum group components is the basis for the subsequent molecular composition and isotopic analysis. Due to the complex composition of isomers, the components of aromatic compounds prepared by traditional techniques still cannot meet the isotopic analysis requirements of specific compounds. Two different separating methods were used to finely separate and prepare polycyclic aromatic hydrocarbons in crude oils. The "one-step method" was to directly pass the de-asphalted crude oil samples through an alumina/silica gel chromatography column, and elute them with different ratios of petroleum ether/dichloromethane mixed solvent. The "two-step method" firstly used conventional separation methods to obtain aromatic fraction from crude oils, and then applied the aromatic fraction to a column filled with alumina and sub-fractions with different ring numbers then eluted with mixed solvent with different ratios of petroleum ether/dichloromethane. Gas chromatography-mass spectrometry (GC-MS) analysis for the sub-fractions were carried out for the comparison between the two separation methods. Results show that the "two-step method" can better realize the separation and preparation of monocyclic, bicyclic and tricyclic aromatic compounds. The mixed solvents of petroleum ether/dichloromethane of V/V: 99/1, 9/1 and 8/2 can obtain monocyclic, bicyclic and tricyclic aromatic compounds respectively.https://www.sysydz.net/cn/article/doi/10.11781/sysydz202103524petroleumcolumn chromatographyseparationpolycyclic aromatic |
| spellingShingle | Xue LIU Meijun LI Youjun TANG Daxiang HE N'Guessan Francois De Sales KONAN Shengbao SHI Lei ZHU An improved column-chromatographic separation for polycyclic aromatic compounds in petroleum Shiyou shiyan dizhi petroleum column chromatography separation polycyclic aromatic |
| title | An improved column-chromatographic separation for polycyclic aromatic compounds in petroleum |
| title_full | An improved column-chromatographic separation for polycyclic aromatic compounds in petroleum |
| title_fullStr | An improved column-chromatographic separation for polycyclic aromatic compounds in petroleum |
| title_full_unstemmed | An improved column-chromatographic separation for polycyclic aromatic compounds in petroleum |
| title_short | An improved column-chromatographic separation for polycyclic aromatic compounds in petroleum |
| title_sort | improved column chromatographic separation for polycyclic aromatic compounds in petroleum |
| topic | petroleum column chromatography separation polycyclic aromatic |
| url | https://www.sysydz.net/cn/article/doi/10.11781/sysydz202103524 |
| work_keys_str_mv | AT xueliu animprovedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT meijunli animprovedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT youjuntang animprovedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT daxianghe animprovedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT nguessanfrancoisdesaleskonan animprovedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT shengbaoshi animprovedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT leizhu animprovedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT xueliu improvedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT meijunli improvedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT youjuntang improvedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT daxianghe improvedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT nguessanfrancoisdesaleskonan improvedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT shengbaoshi improvedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum AT leizhu improvedcolumnchromatographicseparationforpolycyclicaromaticcompoundsinpetroleum |