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Effects of CH4 and CO2 on the sulfidization of goethite and magnetite: an in situ Raman spectroscopic study in high-pressure capillary optical cells at room temperature
Wang, Menghan1,2; Chou, I-Ming3; Lu, Wanjun1; De Vivo, Benedetto2
2015-03-01
Source PublicationEUROPEAN JOURNAL OF MINERALOGY
Volume27Issue:2Pages:193-201
AbstractReactions of goethite and magnetite with sulfide solutions under CH4 and/or CO2 atmospheres were monitored in situ with Raman spectroscopy in the high-pressure capillary optical cells (HPOCs) at room temperature. Isolated systems were created in the enclosed HPOCs for the study of the mineral-solution interactions to prevent oxidation during the experiments. We observed that iron (oxyhydr)oxide minerals were inert to sulfide solution under CH4 atmosphere, and that the addition of CO2 to this system triggered the sulfidization reactions and produced iron monosulfide; mackinawite was identified in the solid phase immersed in the solution after six hours and pyrrhotite in the solid phase exposed to the vapor phase after 5 days. Mackinawite formed in the aqueous phase was metastable, and dissolved after about 10 days. The observed sulfidization of iron (oxyhydr)oxide minerals was through a replacement reaction rather than a dissolution-precipitation process.
SubtypeArticle
KeywordGoethite Magnetite Sulfidization Sulfidation Mackinawite Pyrrhotite Methane Carbon Dioxide Raman Spectroscopy
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1127/ejm/2015/0027-2432
Indexed BySCI
Language英语
WOS KeywordHYDROGEN-SULFIDE ; PYRITE FORMATION ; AQUEOUS-SOLUTIONS ; IRON MINERALS ; SEDIMENTS ; REACTIVITY ; OXIDATION ; HYDRATE ; METHANE ; OXIDES
WOS SubjectMineralogy
WOS IDWOS:000353313000005
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/467
Collection深海科学研究部_深海极端环境模拟研究实验室
Affiliation1.China Univ Geosci, Dept Marine Sci & Engn, Wuhan 430074, Peoples R China
2.Univ Naples Federico II, Dipartimento Sci Terra Ambiente & Risorse, I-80134 Naples, Italy
3.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Peoples R China
Recommended Citation
GB/T 7714
Wang, Menghan,Chou, I-Ming,Lu, Wanjun,et al. Effects of CH4 and CO2 on the sulfidization of goethite and magnetite: an in situ Raman spectroscopic study in high-pressure capillary optical cells at room temperature[J]. EUROPEAN JOURNAL OF MINERALOGY,2015,27(2):193-201.
APA Wang, Menghan,Chou, I-Ming,Lu, Wanjun,&De Vivo, Benedetto.(2015).Effects of CH4 and CO2 on the sulfidization of goethite and magnetite: an in situ Raman spectroscopic study in high-pressure capillary optical cells at room temperature.EUROPEAN JOURNAL OF MINERALOGY,27(2),193-201.
MLA Wang, Menghan,et al."Effects of CH4 and CO2 on the sulfidization of goethite and magnetite: an in situ Raman spectroscopic study in high-pressure capillary optical cells at room temperature".EUROPEAN JOURNAL OF MINERALOGY 27.2(2015):193-201.
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