Determination of the absolute CH(4) adsorption using simplified local density theory and comparison with the modified Langmuir adsorption model

Accurately determining the adsorbed amount of CH(4) on shale is significant for understanding the mechanisms of shale gas storage and shale methane recovery from shale gas reservoirs. Excess CH(4) adsorption is measured using the thermogravimetric method. Simplified local density (SLD) theory is app...

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Autores principales: Zhang, Yeyu, Zhang, Shaonan, Wang, Zhicheng, Deng, Hucheng, Qi, Minghui, Peng, Xianfeng, Liu, Yueliang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9091947/
https://www.ncbi.nlm.nih.gov/pubmed/35559325
http://dx.doi.org/10.1039/c8ra08586b
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author Zhang, Yeyu
Zhang, Shaonan
Wang, Zhicheng
Deng, Hucheng
Qi, Minghui
Peng, Xianfeng
Liu, Yueliang
author_facet Zhang, Yeyu
Zhang, Shaonan
Wang, Zhicheng
Deng, Hucheng
Qi, Minghui
Peng, Xianfeng
Liu, Yueliang
author_sort Zhang, Yeyu
collection PubMed
description Accurately determining the adsorbed amount of CH(4) on shale is significant for understanding the mechanisms of shale gas storage and shale methane recovery from shale gas reservoirs. Excess CH(4) adsorption is measured using the thermogravimetric method. Simplified local density (SLD) theory is applied to calculate the adsorbed CH(4) density to obtain the absolute adsorption. Moreover, the modified Langmuir adsorption model is employed to fit the excess adsorption to describe the absolute adsorption. The adsorbed CH(4) density from the SLD model is affected by the system pressure and temperature, while such density obtained from the modified Langmuir model is only a function of temperature. Compared to the modified Langmuir model, the SLD model can better capture the adsorbed CH(4) density, which allows accurate determination of the absolute CH(4) adsorption.
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spelling pubmed-90919472022-05-11 Determination of the absolute CH(4) adsorption using simplified local density theory and comparison with the modified Langmuir adsorption model Zhang, Yeyu Zhang, Shaonan Wang, Zhicheng Deng, Hucheng Qi, Minghui Peng, Xianfeng Liu, Yueliang RSC Adv Chemistry Accurately determining the adsorbed amount of CH(4) on shale is significant for understanding the mechanisms of shale gas storage and shale methane recovery from shale gas reservoirs. Excess CH(4) adsorption is measured using the thermogravimetric method. Simplified local density (SLD) theory is applied to calculate the adsorbed CH(4) density to obtain the absolute adsorption. Moreover, the modified Langmuir adsorption model is employed to fit the excess adsorption to describe the absolute adsorption. The adsorbed CH(4) density from the SLD model is affected by the system pressure and temperature, while such density obtained from the modified Langmuir model is only a function of temperature. Compared to the modified Langmuir model, the SLD model can better capture the adsorbed CH(4) density, which allows accurate determination of the absolute CH(4) adsorption. The Royal Society of Chemistry 2018-12-11 /pmc/articles/PMC9091947/ /pubmed/35559325 http://dx.doi.org/10.1039/c8ra08586b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Zhang, Yeyu
Zhang, Shaonan
Wang, Zhicheng
Deng, Hucheng
Qi, Minghui
Peng, Xianfeng
Liu, Yueliang
Determination of the absolute CH(4) adsorption using simplified local density theory and comparison with the modified Langmuir adsorption model
title Determination of the absolute CH(4) adsorption using simplified local density theory and comparison with the modified Langmuir adsorption model
title_full Determination of the absolute CH(4) adsorption using simplified local density theory and comparison with the modified Langmuir adsorption model
title_fullStr Determination of the absolute CH(4) adsorption using simplified local density theory and comparison with the modified Langmuir adsorption model
title_full_unstemmed Determination of the absolute CH(4) adsorption using simplified local density theory and comparison with the modified Langmuir adsorption model
title_short Determination of the absolute CH(4) adsorption using simplified local density theory and comparison with the modified Langmuir adsorption model
title_sort determination of the absolute ch(4) adsorption using simplified local density theory and comparison with the modified langmuir adsorption model
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9091947/
https://www.ncbi.nlm.nih.gov/pubmed/35559325
http://dx.doi.org/10.1039/c8ra08586b
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