Experimental investigations on the thermochemical oxidation of n-alkane and alcohol compounds by MnO2 and Fe2O3 at temperatures up to 325 degrees C

doi:10.1016/j.chemgeo.2020.119982

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

	Experimental investigations on the thermochemical oxidation of n-alkane and alcohol compounds by MnO2 and Fe2O3 at temperatures up to 325 degrees C
	Wan, Ye 1,2,4,5,6; Bourdet, Julien 6; Hu, Wenxuan 1,5; Kang, Xun 3; Heath, Charles 6; Qiu, Ye 1,5; Gao, Wanlu 1,5; Wang, Xiaolin 1,4,5
刊名	CHEMICAL GEOLOGY
	2021-01-05
卷号	559 页码:14
关键词	Thermochemical oxidation Methane stability n-alkane and alcohol compounds Mn(IV) and Fe(III) oxides Reaction pathway Reaction kinetics
ISSN号	0009-2541
DOI	10.1016/j.chemgeo.2020.119982
英文摘要	Thermochemical oxidation of organic components (TOOC) coupled to the reduction of Mn(IV) or Fe(III) can occur in a spectrum of geologic settings. Examples of geologic case studies implied that the TOOC can steadily occur at temperatures below 200 degrees C. However, existing relevant experimental work was conducted at temperatures above 350 degrees C. Therefore, uncertainties remain over the reaction at lower temperatures. This study mainly adopted Raman spectroscopy combined with fused silica capillary capsules (FSCCs) to explore the thermochemical oxidation of methane, n-alkanes (here C13H25) and alcohol compounds (here CH3OH and C2H5OH) by MnO2 or Fe2O3 at relatively low temperatures. The results showed that the TOOC reaction can proceed efficiently at temperatures below 200 degrees C, which, to a large extent, decreased the temperature gap between experiments and geological cases. The onset temperature of TOOC is largely dependent on the species of organic matter. Expectedly, long chain n-alkane (C13H25), methanol (CH3OH) and ethanol (C2H5OH) show higher reactivity than CH4 and thus were readily oxidized by oxidants at lower temperatures. The results also implied that either the oxidation of organic components or the reduction of MnO2 proceeds by steps, during which a series of intermediate products are generated. The activation energy of the thermochemical oxidation of CH4 by manganese oxides was also estimated based on quantitative Raman spectroscopic analyses. Finally, we discussed the potential contributions of TOOC to the alteration of organic components, the modification of reservoir properties, the carbon cycles and other geological processes.
资助项目	National Key Research and Development Program of China[2017YFC0603105] ; National Natural Science Foundation of China[41830425] ; National Natural Science Foundation of China[41573054] ; China Scholarship Council (CSC)
WOS关键词	SYNTHETIC FLUID INCLUSIONS ; FUSED-SILICA CAPILLARIES ; OIL-FIELD WATERS ; SULFATE REDUCTION ; ANAEROBIC OXIDATION ; ATMOSPHERIC METHANE ; HYDROTHERMAL VENTS ; AQUEOUS-SOLUTIONS ; ISOTOPIC EVIDENCE ; GEOCHEMICAL CHARACTERISTICS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000600546500015
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; China Scholarship Council (CSC)
内容类型	期刊论文
源URL	[http://ir.idsse.ac.cn/handle/183446/8487]
专题	深海科学研究部_深海极端环境模拟研究实验室
通讯作者	Hu, Wenxuan; Wang, Xiaolin
作者单位	1.Nanjing Univ, Sch Earth Sci & Engn, Inst Energy Sci, Nanjing 210023, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Hainan, Peoples R China 3.Cent South Univ, Sch Geosci & Info Phys, Changsha 410083, Hunan, Peoples R China 4.Shandong Univ Sci & Technol, Shandong Prov Key Lab Deposit Mineralizat & Sedim, Qingdao 266590, Shandong, Peoples R China 5.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposit Res, Nanjing 210023, Jiangsu, Peoples R China 6.CSIRO, ARRC, 26 Dick Perry Ave, Kensington, WA 6151, Australia
推荐引用方式 GB/T 7714	Wan, Ye,Bourdet, Julien,Hu, Wenxuan,et al. Experimental investigations on the thermochemical oxidation of n-alkane and alcohol compounds by MnO2 and Fe2O3 at temperatures up to 325 degrees C[J]. CHEMICAL GEOLOGY,2021,559:14.
APA	Wan, Ye.,Bourdet, Julien.,Hu, Wenxuan.,Kang, Xun.,Heath, Charles.,...&Wang, Xiaolin.(2021).Experimental investigations on the thermochemical oxidation of n-alkane and alcohol compounds by MnO2 and Fe2O3 at temperatures up to 325 degrees C.CHEMICAL GEOLOGY,559,14.
MLA	Wan, Ye,et al."Experimental investigations on the thermochemical oxidation of n-alkane and alcohol compounds by MnO2 and Fe2O3 at temperatures up to 325 degrees C".CHEMICAL GEOLOGY 559(2021):14.