The occurrence and geochemical origin of 9-alkyl HDBTs substituted by long isoprenoid alkyl chains in crude oil
文献类型：期刊论文
| 作者 | Wu, Jianxun2,3; Hamid, Abdelrahman A.2; Zhang, Weilai2; Li, Shuofan2; Zhang, Yahe2; Liao, Yuhong1; Shi, Quan2 |
| 刊名 | ORGANIC GEOCHEMISTRY
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 188页码:6 |
| 关键词 | 9-alkyl HDBTs Carotenoids Sulfur heterocycles Desulfurization GC-MS |
| ISSN号 | 0146-6380 |
| DOI | 10.1016/j.orggeochem.2023.104721 |
| 英文摘要 | 1,1,4a,6-tetramethyl-9-alkyl-1,2,3,4,4a,9b-hexahydrodibenzo[b,d]thiophene (9-alkyl HDBT) was initially found in highly desulfurized diesel oils. This and related organic sulfur compounds (OSCs) have a special shielding structure that make them extremely resistant to hydrodesulfurization. The structure of 9-alkyl HDBTs is likely directly inherited from biological precursors related to terpenoids, but their origins have not been determined. In this study, OSCs were isolated from a low sulfur crude oil from the Junggar Basin in China by the methylation/ demethylation method and characterized by gas chromatography-mass spectrometry. A series of 9-alkyl HDBTs substituted with long isoprenoid alkyl chains were identified in the OSCs. Raney nickel desulfurization was conducted to assist the structural identification. The presence of 9-alkyl HDBTs with a beta-carotene carbon skeleton and the predominance in specific carbon numbers of alkyl-substituted 9-alkyl HDBTs support a carotenoid origin of such OSCs. Possible geochemical pathways are proposed for the formation of these OSCs via beta-carotene, involving processes such as sulfur incorporation, cyclization, aromatization, hydrogenation, and cleavage. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001147473100001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/76155]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Shi, Quan |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 2.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China 3.China Univ Petr, Coll Sci, Beijing 102249, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Jianxun,Hamid, Abdelrahman A.,Zhang, Weilai,et al. The occurrence and geochemical origin of 9-alkyl HDBTs substituted by long isoprenoid alkyl chains in crude oil[J]. ORGANIC GEOCHEMISTRY,2024,188:6. |
| APA | Wu, Jianxun.,Hamid, Abdelrahman A..,Zhang, Weilai.,Li, Shuofan.,Zhang, Yahe.,...&Shi, Quan.(2024).The occurrence and geochemical origin of 9-alkyl HDBTs substituted by long isoprenoid alkyl chains in crude oil.ORGANIC GEOCHEMISTRY,188,6. |
| MLA | Wu, Jianxun,et al."The occurrence and geochemical origin of 9-alkyl HDBTs substituted by long isoprenoid alkyl chains in crude oil".ORGANIC GEOCHEMISTRY 188(2024):6. |
入库方式： OAI收割
来源：广州地球化学研究所
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