Dendric Fractal Characteristics of Pores in Anthracite and Their Influences on Gas Adsorption Characteristics
The characteristics of pores in anthracite from Guhanshan Coal Mine in the Jiaozuo mining area were tested by the mercury injection method. According to the pore size, pores in the coal sample were classified into gas seepage pores and gas adsorption pores which were in line with the stochastic frac...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/1465777 |
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| author | Zhihui Wen Bingtao Jia Jianwei Wang Jiangang Ren Qi Wang |
| author_facet | Zhihui Wen Bingtao Jia Jianwei Wang Jiangang Ren Qi Wang |
| author_sort | Zhihui Wen |
| collection | DOAJ |
| description | The characteristics of pores in anthracite from Guhanshan Coal Mine in the Jiaozuo mining area were tested by the mercury injection method. According to the pore size, pores in the coal sample were classified into gas seepage pores and gas adsorption pores which were in line with the stochastic fractal model and the dendric fractal model, respectively. Besides, the fractal characteristics of adsorption pores were analyzed by using a dendric fractal model, and the influence law of the tortuosity fractal dimension Dt on the gas adsorption capacity was obtained. The research results show that the amount of mercury injected into each experimental coal sample is directly proportional to its porosity, but has no obvious correlation with specific surface area. Seepage pores with sizes over 65 nm fit the stochastic fractal model, and their fractal dimension D increases with the increase of specific surface area. Adsorption pores with sizes of below 65 nm fit the dendric fractal model, and their tortuosity fractal dimension Dt is positively correlated with the specific surface area. Through the gas adsorption experiment on coal samples, it is found that a larger Dt corresponds to a stronger gas adsorption capacity. The research results can provide a theoretical basis for elucidating the gas adsorption characteristics of anthracite from a microscopic point of view. |
| format | Article |
| id | doaj-art-65cf4bc9b8ec4897b4bc3bc715c136ff |
| institution | DOAJ |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-65cf4bc9b8ec4897b4bc3bc715c136ff2025-08-20T03:18:09ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/1465777Dendric Fractal Characteristics of Pores in Anthracite and Their Influences on Gas Adsorption CharacteristicsZhihui Wen0Bingtao Jia1Jianwei Wang2Jiangang Ren3Qi Wang4State Key Laboratory Cultivation Base for Gas Geology and Gas ControlState Key Laboratory Cultivation Base for Gas Geology and Gas ControlZhengzhou Coal Industry (Group) Co. Ltd.School of Resources and EnvironmentState Key Laboratory Cultivation Base for Gas Geology and Gas ControlThe characteristics of pores in anthracite from Guhanshan Coal Mine in the Jiaozuo mining area were tested by the mercury injection method. According to the pore size, pores in the coal sample were classified into gas seepage pores and gas adsorption pores which were in line with the stochastic fractal model and the dendric fractal model, respectively. Besides, the fractal characteristics of adsorption pores were analyzed by using a dendric fractal model, and the influence law of the tortuosity fractal dimension Dt on the gas adsorption capacity was obtained. The research results show that the amount of mercury injected into each experimental coal sample is directly proportional to its porosity, but has no obvious correlation with specific surface area. Seepage pores with sizes over 65 nm fit the stochastic fractal model, and their fractal dimension D increases with the increase of specific surface area. Adsorption pores with sizes of below 65 nm fit the dendric fractal model, and their tortuosity fractal dimension Dt is positively correlated with the specific surface area. Through the gas adsorption experiment on coal samples, it is found that a larger Dt corresponds to a stronger gas adsorption capacity. The research results can provide a theoretical basis for elucidating the gas adsorption characteristics of anthracite from a microscopic point of view.http://dx.doi.org/10.1155/2022/1465777 |
| spellingShingle | Zhihui Wen Bingtao Jia Jianwei Wang Jiangang Ren Qi Wang Dendric Fractal Characteristics of Pores in Anthracite and Their Influences on Gas Adsorption Characteristics Geofluids |
| title | Dendric Fractal Characteristics of Pores in Anthracite and Their Influences on Gas Adsorption Characteristics |
| title_full | Dendric Fractal Characteristics of Pores in Anthracite and Their Influences on Gas Adsorption Characteristics |
| title_fullStr | Dendric Fractal Characteristics of Pores in Anthracite and Their Influences on Gas Adsorption Characteristics |
| title_full_unstemmed | Dendric Fractal Characteristics of Pores in Anthracite and Their Influences on Gas Adsorption Characteristics |
| title_short | Dendric Fractal Characteristics of Pores in Anthracite and Their Influences on Gas Adsorption Characteristics |
| title_sort | dendric fractal characteristics of pores in anthracite and their influences on gas adsorption characteristics |
| url | http://dx.doi.org/10.1155/2022/1465777 |
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