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Liu Y, Chou IM, Chen J, Wu N, Li W, Bagas L, Ren M, Liu Z, Mei S, Wang L. Oldhamite: a new link in upper mantle for C-O-S-Ca cycles and an indicator for planetary habitability. Natl Sci Rev 2023; 10:nwad159. [PMID: 37671325 PMCID: PMC10476894 DOI: 10.1093/nsr/nwad159] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 05/17/2023] [Accepted: 05/24/2023] [Indexed: 09/07/2023] Open
Abstract
In the solar system, oldhamite (CaS) is generally considered to be formed by the condensation of solar nebula gas. Enstatite chondrites, one of the most important repositories of oldhamite, are believed to be representative of the material that formed Earth. Thus, the formation mechanism and the evolution process of oldhamite are of great significance to the deep understanding of the solar nebula, meteorites, the origin of Earth, and the C-O-S-Ca cycles of Earth. Until now, oldhamite has not been reported to occur in mantle rock. However, here we show the formation of oldhamite through the reaction between sulfide-bearing orthopyroxenite and molten CaCO3 at 1.5 GPa/1510 K, 0.5 GPa/1320 K, and 0.3 GPa/1273 K. Importantly, this reaction occurs at oxygen fugacities within the range of upper-mantle conditions, six orders of magnitude higher than that of the solar nebula mechanism. Oldhamite is easily oxidized to CaSO4 or hydrolysed to produce calcium hydroxide. Low oxygen fugacity of magma, extremely low oxygen content of the atmosphere, and the lack of a large amount of liquid water on the celestial body's surface are necessary for the widespread existence of oldhamite on the surface of a celestial body otherwise, anhydrite or gypsum will exist in large quantities. Oldhamites may exist in the upper mantle beneath mid-ocean ridges. Additionally, oldhamites may have been a contributing factor to the early Earth's atmospheric hypoxia environment, and the transient existence of oldhamites during the interaction between reducing sulfur-bearing magma and carbonate could have had an impact on the changes in atmospheric composition during the Permian-Triassic Boundary.
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Affiliation(s)
- Yuegao Liu
- CAS Key Laboratory for Experimental Study under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China
- Hainan Deep-Sea Technology Innovation Center, Sanya 572000, China
| | - I-Ming Chou
- CAS Key Laboratory for Experimental Study under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China
| | - Jiangzhi Chen
- CAS Key Laboratory for Experimental Study under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China
- Hainan Deep-Sea Technology Innovation Center, Sanya 572000, China
| | - Nanping Wu
- CAS Key Laboratory for Experimental Study under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China
| | - Wenyuan Li
- Xi’an Center of Geological Survey, China Geological Survey, Xi’an 710054, China
| | - Leon Bagas
- Xi’an Center of Geological Survey, China Geological Survey, Xi’an 710054, China
| | - Minghua Ren
- Department of Geoscience, University of Nevada, Las Vegas, Las Vegas, NV 89154, USA
| | - Zairong Liu
- CAS Key Laboratory for Experimental Study under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China
| | - Shenghua Mei
- CAS Key Laboratory for Experimental Study under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China
- Hainan Deep-Sea Technology Innovation Center, Sanya 572000, China
| | - Liping Wang
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
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Chen C, Chen Z, Zhang M, Zheng S, Zhang W, Li S, Pan F. Closo-[B 12 H 12 ] 2- Derivatives with Polar Groups As Promising Building Blocks in Metal-Organic Frameworks for Gas Separation. ChemSusChem 2023; 16:e202300434. [PMID: 37253197 DOI: 10.1002/cssc.202300434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/24/2023] [Accepted: 05/25/2023] [Indexed: 06/01/2023]
Abstract
Engineering design of metal organic frameworks (MOFs) for gas separation applications is nowadays a thriving field of investigation. Based on the recent experimental studies of dodecaborate-hybrid MOFs as potential materials to separate industry-relevant gas mixtures, we herein present a systematic theoretical study on the derivatives of the closo-dodecaborate anion [B12 H12 ]2- , which can serve as building blocks for MOFs. We discover that amino functionalization can impart a greater ability to selectively capture carbon dioxide from its mixtures with other gases such as nitrogen, ethylene and acetylene. The main advantage lies in the polarization effect induced by amino group, which favors the localization of the negative charges on the boron-cluster anion and offers a nucleophilic anchoring site to accommodate the carbon atom in carbon dioxide. This work suggests an appealing strategy of polar functionalization to optimize the molecule discrimination ability via preferential adsorption.
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Affiliation(s)
- Chuanxi Chen
- School of Advanced Materials, Peking University, Shenzhen Graduate School, 518055, Shenzhen, People's Republic of China
| | - Zhefeng Chen
- School of Advanced Materials, Peking University, Shenzhen Graduate School, 518055, Shenzhen, People's Republic of China
| | - Mingzheng Zhang
- School of Advanced Materials, Peking University, Shenzhen Graduate School, 518055, Shenzhen, People's Republic of China
| | - Shisheng Zheng
- School of Advanced Materials, Peking University, Shenzhen Graduate School, 518055, Shenzhen, People's Republic of China
| | - Wentao Zhang
- School of Advanced Materials, Peking University, Shenzhen Graduate School, 518055, Shenzhen, People's Republic of China
| | - Shunning Li
- School of Advanced Materials, Peking University, Shenzhen Graduate School, 518055, Shenzhen, People's Republic of China
| | - Feng Pan
- School of Advanced Materials, Peking University, Shenzhen Graduate School, 518055, Shenzhen, People's Republic of China
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