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

doi:10.1127/ejm/2015/0027-2432

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 深海极端环境模拟研究实验室

	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
	Lu, Wanjun 1; Chou, I-Ming2 ; Wang, Menghan 1,3; De Vivo, Benedetto 3
刊名	EUROPEAN JOURNAL OF MINERALOGY
	2015-03-01
卷号	27 期号:2 页码:193-201
关键词	Goethite Magnetite Sulfidization Sulfidation Mackinawite Pyrrhotite Methane Carbon Dioxide Raman Spectroscopy
DOI	10.1127/ejm/2015/0027-2432
文献子类	Article
英文摘要	Reactions 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.
WOS关键词	HYDROGEN-SULFIDE ; PYRITE FORMATION ; AQUEOUS-SOLUTIONS ; IRON MINERALS ; SEDIMENTS ; REACTIVITY ; OXIDATION ; HYDRATE ; METHANE ; OXIDES
语种	英语
WOS记录号	WOS:000353313000005
内容类型	期刊论文
源URL	[http://124.16.218.2:8080/handle/183446/467]
专题	深海科学研究部_深海极端环境模拟研究实验室
作者单位	1.China Univ Geosci, Dept Marine Sci & Engn, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Peoples R China 3.Univ Naples Federico II, Dipartimento Sci Terra Ambiente & Risorse, I-80134 Naples, Italy
推荐引用方式 GB/T 7714	Lu, Wanjun,Chou, I-Ming,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[J]. EUROPEAN JOURNAL OF MINERALOGY,2015,27(2):193-201.
APA	Lu, Wanjun,Chou, I-Ming,Wang, Menghan,&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	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".EUROPEAN JOURNAL OF MINERALOGY 27.2(2015):193-201.