Thermodynamic properties of ruthenium (IV) chloride complex and the transport of ruthenium in magmatic-hydrothermal fluids
文献类型：期刊论文
| 作者 | Yan, Haibo1,2,3,4; Sun, Weidong1,5,6 ; Liu, Junfeng7; Tu, Xianglin2,3; Ding, Xing1,2,3
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| 刊名 | ORE GEOLOGY REVIEWS
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| 出版日期 | 2021-04-01 |
| 卷号 | 131页码:12 |
| ISSN号 | 0169-1368 |
| 关键词 | Ru-Cl complex Hydrolysis Transport Hydrothermal fluids Submarine hydrothermal fluids |
| DOI | 10.1016/j.oregeorev.2021.104043 |
| 通讯作者 | Ding, Xing(xding@gig.ac.cn) |
| 英文摘要 | Thermodynamic properties of platinum-group element (PGE) coordination complexes are significant for our understanding of PGE mobilization, transport, and deposition in hydrothermal fluids. This study conducted hydrolysis experiments of ruthenium (IV) chloride complex (K2RuCl6) at temperatures of 200?600 ?C and water pressure of 100 MPa, combined with related geochemical modeling, to quantitatively investigate the thermodynamic behavior of the Ru-Cl complex in magmatic-hydrothermal fluids. The results show that the hydrolysis reactions of [RuCl6]2? get equilibrium within 24 hours at 200 ?C and have positive temperature dependence. The cumulative hydrolysis constants (K) calculated for the reactions fit well on a linear correlation with temperatures (T, Kelvin): lnK = (42.95 ? 4.13) ? (56205 ? 2594)/T. Based on the cumulative hydrolysis constants obtained, we established a preliminary model to decipher the quantitative relationship among the temperature, pH, total chlorine concentration, and the mobility of the Ru-Cl complex in natural Cl-bearing hydrothermal fluids. The calculation results demonstrate that Ru could be mobile in the Cl-bearing (0.05?0.5 wt%), low to moderate temperature (<550 ?C), and acidic (pH < 4) fluids, and be highly mobile in the Cl-rich (0.5?20 wt%), acidic - weakly alkaline fluids. The fluid?s pH and total chlorine concentration dominate the Ru-Cl complex?s stability and the Ru transport. Therefore, dilution of ambient seawater on the hydrothermal fluids and plumes related to the magmatic-hydrothermal vent systems is the geochemical barrier, which is advantageous to PGE precipitation and mineralization. Furthermore, this study highlights the importance of metal source for the PGE mobilization and deposition and suggests that the source?s deficiency substantially limits the PGE mobilization, transport, and deposition, resulting in the scarcity of hydrothermal PGE deposits in the crust. |
| 资助项目 | Chinese Academy of Sciences[XDB42000000] ; National Key R&D Program of China[2016YFC0600408] ; National Natural Science Foundation of China[41730423] ; National Natural Science Foundation of China[41773054] |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000632780100001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/170329]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Ding, Xing |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 6.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanog, Qingdao 266071, Peoples R China 7.Changan Univ, Sch Earth Sci & Resources, Xian 710054, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Haibo,Sun, Weidong,Liu, Junfeng,et al. Thermodynamic properties of ruthenium (IV) chloride complex and the transport of ruthenium in magmatic-hydrothermal fluids[J]. ORE GEOLOGY REVIEWS,2021,131:12. |
| APA | Yan, Haibo,Sun, Weidong,Liu, Junfeng,Tu, Xianglin,&Ding, Xing.(2021).Thermodynamic properties of ruthenium (IV) chloride complex and the transport of ruthenium in magmatic-hydrothermal fluids.ORE GEOLOGY REVIEWS,131,12. |
| MLA | Yan, Haibo,et al."Thermodynamic properties of ruthenium (IV) chloride complex and the transport of ruthenium in magmatic-hydrothermal fluids".ORE GEOLOGY REVIEWS 131(2021):12. |
入库方式： OAI收割
来源：海洋研究所
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