IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v288y2024ics0360544223032668.html
   My bibliography  Save this article

Effect of microwave-assisted cyclic oxidation on the coal internal and surface structure based on NMR and AFM

Author

Listed:
  • Li, He
  • Cao, Jieyan
  • Lu, Jiexin
  • Lin, Baiquan
  • Lu, Yi
  • Shi, Shiliang
  • Yang, Wei
  • Hong, Yidu
  • Liu, Ting
  • Liu, Meng

Abstract

Exploring new methods for comprehensive mining of coalbed methane (CBM) is a research hotspot. Pore connectivity has a significant impact on the permeability of coal, and as connectivity increases, it has a positive impact on the desorption and seepage of CBM. To quantify and visualize the pore development of coal under three cyclic treatments, T2 and T1-T2 spectra obtained by nuclear magnetic resonance (NMR) and Surface roughness obtained by atomic force microscope (AFM) were selected for characterization. The NMR results indicate that microwave-assisted cyclic oxidation can stimulate the formation of pores and pore throats and effectively dissolve the coal matrix, thereby changing the structure of the coal, manifested by a growth rate of −5.84 % for irreducible porosity and 31.5 % for producible porosity. Cyclic oxidation and microwave have a certain impact on the conversion of micropores to mesopores, but have a relatively less impact on the evolution of new pores. The maximum Rq and Ra obtained by AFM of microwave-assisted cyclic oxidation are 84.7 nm and 70.3 nm, respectively. Moreover, its Rsk and Rku are less than zero and three, respectively. This indicates that microwave-assisted cyclic oxidation has the best effect on changing the internal and surface morphology of coal.

Suggested Citation

  • Li, He & Cao, Jieyan & Lu, Jiexin & Lin, Baiquan & Lu, Yi & Shi, Shiliang & Yang, Wei & Hong, Yidu & Liu, Ting & Liu, Meng, 2024. "Effect of microwave-assisted cyclic oxidation on the coal internal and surface structure based on NMR and AFM," Energy, Elsevier, vol. 288(C).
    • Handle: RePEc:eee:energy:v:288:y:2024:i:c:s0360544223032668
    DOI: 10.1016/j.energy.2023.129872
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544223032668
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2023.129872?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Qin, Lei & Wang, Ping & Lin, Haifei & Li, Shugang & Zhou, Bin & Bai, Yang & Yan, Dongjie & Ma, Chao, 2023. "Quantitative characterization of the pore volume fractal dimensions for three kinds of liquid nitrogen frozen coal and its enlightenment to coalbed methane exploitation," Energy, Elsevier, vol. 263(PA).
    2. Dang, Zheng & Su, Linan & Wang, Xiaoming & Hou, Shihui, 2023. "Experimental study of the effect of ClO2 on coal: Implication for coalbed methane recovery with oxidant stimulation," Energy, Elsevier, vol. 271(C).
    3. Prabu, V. & Mallick, Nirmal, 2015. "Coalbed methane with CO2 sequestration: An emerging clean coal technology in India," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 229-244.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Fu, Shenguang & Wang, Liang & Li, Shuohao & Ni, Sijia & Cheng, Yuanping & Zhang, Xiaolei & Liu, Shimin, 2024. "Re-thinking methane storage mechanism in highly metamorphic coalbed reservoirs — A molecular simulation considering organic components," Energy, Elsevier, vol. 293(C).
    2. Anita Punia, 2021. "Carbon dioxide sequestration by mines: implications for climate change," Climatic Change, Springer, vol. 165(1), pages 1-17, March.
    3. Yang, Zairong & Wang, Chaolin & Zhao, Yu & Bi, Jing, 2024. "Microwave fracturing of frozen coal with different water content: Pore-structure evolution and temperature characteristics," Energy, Elsevier, vol. 294(C).
    4. Chen, Kang & Liu, Xianfeng & Nie, Baisheng & Zhang, Chengpeng & Song, Dazhao & Wang, Longkang & Yang, Tao, 2022. "Mineral dissolution and pore alteration of coal induced by interactions with supercritical CO2," Energy, Elsevier, vol. 248(C).
    5. Dang, Zheng & Wang, Xiaoming & Bie, Shizhen & Su, Xianbo & Hou, Shihui, 2024. "Experimental study of water occurrence in coal under different negative pressure conditions: Implication for CBM productivity during negative pressure drainage," Energy, Elsevier, vol. 303(C).
    6. Li, He & Lv, Xuefen & Lu, Jiexin & Liu, Meng & Yang, Wei & Hong, Yidu & Liu, Ting & Lin, Baiquan & Wang, Zheng, 2024. "Effect of cyclic thermal stimulation on the pore structure and fluid space of coal and inspiration for coalbed methane production," Energy, Elsevier, vol. 289(C).
    7. Cai, Jiawen & Yu, Zhaoyang & Yang, Shengqiang & Tang, Jingxia & Ma, Zhenqian & Xie, Xionggang & Hu, Xincheng, 2023. "Fractal characteristics of coal surface structure during low-temperature oxidation and its effect on oxidizability," Energy, Elsevier, vol. 284(C).
    8. Zang, Jie & Liu, Jialong & He, Jiabei & Zhang, Xiapeng, 2023. "Characterization of the pore structure in Chinese anthracite coal using FIB-SEM tomography and deep learning-based segmentation," Energy, Elsevier, vol. 282(C).
    9. Nannan Wang & Xiaoyan Chen & Guobin Wu, 2019. "Public Private Partnerships, a Value for Money Solution for Clean Coal District Heating Operations," Sustainability, MDPI, vol. 11(8), pages 1-18, April.
    10. Sun, Fengrui & Liu, Dameng & Cai, Yidong & Qiu, Yongkai, 2023. "A micro-macro coupled permeability model for gas transport in coalbed methane reservoirs," Energy, Elsevier, vol. 284(C).
    11. Jafari, Mohammad & Cao, Shuang Cindy & Jung, Jongwon, 2017. "Geological CO2 sequestration in saline aquifers: Implication on potential solutions of China’s power sector," Resources, Conservation & Recycling, Elsevier, vol. 121(C), pages 137-155.
    12. Zhao, Weizhong & Su, Xianbo & Xia, Daping & Hou, Shihui & Wang, Qian & Zhou, Yixuan, 2022. "Enhanced coalbed methane recovery by the modification of coal reservoir under the supercritical CO2 extraction and anaerobic digestion," Energy, Elsevier, vol. 259(C).
    13. Xie, Senlin & Zhou, Hongwei & Jia, Wenhao & Gu, Yongsheng & Cao, Yanpeng & Liu, Zelin, 2024. "Spatial evolution of pore and fracture structures in coal under unloading confining pressure: A stratified nuclear magnetic resonance approach," Energy, Elsevier, vol. 289(C).
    14. Zhang, Hewei & Shen, Jian & Wang, Geoff & Li, Kexin & Fang, Xiaojie, 2023. "Experimental study on the effect of high-temperature nitrogen immersion on the nanoscale pore structure of different lithotypes of coal," Energy, Elsevier, vol. 284(C).
    15. Sun, Fengrui & Liu, Dameng & Cai, Yidong & Qiu, Yongkai, 2023. "Coal rank-pressure coupling control mechanism on gas adsorption/desorption in coalbed methane reservoirs," Energy, Elsevier, vol. 270(C).
    16. Zhaolong Ge & Mengru Zeng & Yugang Cheng & Haoming Wang & Xianfeng Liu, 2019. "Effects of Supercritical CO 2 Treatment Temperature on Functional Groups and Pore Structure of Coals," Sustainability, MDPI, vol. 11(24), pages 1-16, December.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:288:y:2024:i:c:s0360544223032668. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.