Hydrogen isotope fractionation during aromatization to form alkylnaphthalene: Insights from pyrolysis experiments of 1-n-butyldecalin
文献类型：期刊论文
| 作者 | Cheng, Bin4; Wei, Zhiwei1,3,4; Zhang, Yiman1,4; Deng, Hanyu1,4; Li, Yuxian1,4; Wang, Haozhe1,2,4; Liao, Zewen4 |
| 刊名 | ORGANIC GEOCHEMISTRY
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 198页码:7 |
| 关键词 | Hydrogen isotope fractionation Hydrocarbon aromatization Alkylnaphthalene Pyrolysis |
| ISSN号 | 0146-6380 |
| DOI | 10.1016/j.orggeochem.2024.104881 |
| 英文摘要 | Alkylnaphthalene homologues are important components of aromatic fraction in sedimentary organic matter and contain significantly geochemical information relative to formation and evolution of the host organic matter. They mainly originate from hydrocarbon aromatization reaction which involves the dehydrogenation of aliphatic rings resulting in the fractionation of stable hydrogen isotopes between aromatic hydrocarbons and their precursors. To examine these processes, this study thermally pyrolysed 1-n-butyldecalin (BD) at different time intervals under 360 degrees C/50 MPa to study the aromatization and hydrogen isotope fractionation during alkylnaphthalene formation and evolution. The relative content of aromatic products, such as naphthalene (N) and 1-methylnaphthalene (1-MN), increases with increasing aromatization. Sulfur enhanced the degree of aromatization during BD thermal evolution, resulting in greater N and 1-MN formation. For the compounds with the same carbon skeleton, i.e. tran-1-methyldecalin (1-MD), 5-methyltetraline (5-MT) and 1-MN, the H-2 enrichment follows the order S2H1-MD < S2H5-MT < S2H1-MN during the low thermal conversion of BD. However, the order was subsequently destroyed with increasing aromatization. The results indicate that hydrocarbon aromatization can enrich aromatic hydrocarbon in 2H, resulting in a higher S2H value of higher aromatic-ringnumber hydrocarbon than that of a lower aromatic-ring-number at low aromatization. However, 2H enrichment will decrease and even result in a reverse order with enhanced aromatization. Our findings are beneficial for understanding genetic mechanism and hydrogen isotope fractionation effect during the formation and evolution of aromatic hydrocarbons. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001356652900001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/82037]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Liao, Zewen |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.China Geol Survey, Minist Nat Resources, Key Lab Marine Mineral Resources, Guangzhou Marine Geol Survey, Guangzhou 511458, Peoples R China 3.China Nonferrous Met Guilin Geol & Min Co Ltd, Guilin 541004, Peoples R China 4.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Bin,Wei, Zhiwei,Zhang, Yiman,et al. Hydrogen isotope fractionation during aromatization to form alkylnaphthalene: Insights from pyrolysis experiments of 1-n-butyldecalin[J]. ORGANIC GEOCHEMISTRY,2024,198:7. |
| APA | Cheng, Bin.,Wei, Zhiwei.,Zhang, Yiman.,Deng, Hanyu.,Li, Yuxian.,...&Liao, Zewen.(2024).Hydrogen isotope fractionation during aromatization to form alkylnaphthalene: Insights from pyrolysis experiments of 1-n-butyldecalin.ORGANIC GEOCHEMISTRY,198,7. |
| MLA | Cheng, Bin,et al."Hydrogen isotope fractionation during aromatization to form alkylnaphthalene: Insights from pyrolysis experiments of 1-n-butyldecalin".ORGANIC GEOCHEMISTRY 198(2024):7. |
入库方式： OAI收割
来源：广州地球化学研究所
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