Pore Characterization of Different Clay Minerals and Its Impact on Methane Adsorption Capacity

doi:10.1021/acs.energyfuels.0c01922

IOCAS-IR > 海洋地质与环境重点实验室

	Pore Characterization of Different Clay Minerals and Its Impact on Methane Adsorption Capacity
	Wang, Xiaomei 1; Cheng, Haijian 1; Chai, Pancun 1; Bian, Jiahui 1; Wang, Xiaoming 1; Liu, Yin 1; Yin, Xuebo 2; Pan, Sidong 1; Pan, Zhejun 3
	2020-10-15
发表期刊	ENERGY & FUELS
ISSN	0887-0624
卷号	34 期号:10 页码:12204-12214
通讯作者	Pan, Zhejun([email protected])
摘要	Clay minerals contain a massive amount of nanopores and play a significant role in gas adsorption in shale. Although the pore structure of clay minerals has been widely studied, the characteristic of pores with diameter < 1 nm remains unclear. To investigate the pore characteristics of different clay minerals, especially for micropores, and to reveal the effect of pore structure on the methane adsorption capacity, the isotherm types, pore size distribution, pore volume, and surface area, as well as the CH4 adsorption capacity of pure clay mineral samples, including kaolinite, montmorillonite, illite, and illite-smectite mixed layer (I/S), were investigated based on low-pressure N-2 and CO2 adsorption and CH4 adsorption isotherm measurements. The results show that the isotherm types of the studied clay minerals based on N-2 adsorption are all type IV, characterized by the presence of hysteresis loops. According to the features of hysteresis loops, it can be inferred that kaolinite mainly has cylindrical pores and slit-shaped pores, while pores in montmorillonite, illite, and I/S are dominated by inkbottle-shaped pores, with a small amount of slit-shaped pores. The studied clay minerals all display pore width peaks around 0.56-0.66 nm and 0.82-0.87 nm. Pores with diameters < 1 nm in kaolinite, illite, and I/S are all interparticle pores. Montmorillonite has microporous interlayer pores in addition to the interparticle pores, leading to its relatively large micropore volume and surface area. The CH4 sorption capacity on different clay minerals is mainly influenced by the surface area, and montmorillonite has the highest CH4 adsorption capacity.
DOI	10.1021/acs.energyfuels.0c01922
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41972181]; National Natural Science Foundation of China[41972184]; National Natural Science Foundation of China[41572143]; National Natural Science Foundation of China[41202114]; National Key Research and Development Program of China[2018YFC0604202]
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000582567000032
出版者	AMER CHEMICAL SOC
引用统计	被引频次：52[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/169169
专题	海洋地质与环境重点实验室
通讯作者	Pan, Zhejun
作者单位	1.China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China 3.CSIRO Energy Business Unit, Clayton, Vic 3169, Australia
推荐引用方式 GB/T 7714	Wang, Xiaomei,Cheng, Haijian,Chai, Pancun,et al. Pore Characterization of Different Clay Minerals and Its Impact on Methane Adsorption Capacity[J]. ENERGY & FUELS,2020,34(10):12204-12214.
APA	Wang, Xiaomei.,Cheng, Haijian.,Chai, Pancun.,Bian, Jiahui.,Wang, Xiaoming.,...&Pan, Zhejun.(2020).Pore Characterization of Different Clay Minerals and Its Impact on Methane Adsorption Capacity.ENERGY & FUELS,34(10),12204-12214.
MLA	Wang, Xiaomei,et al."Pore Characterization of Different Clay Minerals and Its Impact on Methane Adsorption Capacity".ENERGY & FUELS 34.10(2020):12204-12214.

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