Oxidative Synthesis of Activated Carbon from Low-grade Indian Tertiary Coal and Its Chemical Characterization

Authors Phibarisha Sohtun1, Mousumi Bora2, Rupam Kataki1, Binoy K. Saikia2

1Department of Energy, Tezpur University, Tezpur, Assam 784028, India

2Coal & Energy Group, Materials Science & Technology Division, CSIR-NEIST, Jorhat, Assam 785006, India

Е-mail rupam@tezu.ernet.in
Issue Volume 13, Year 2021, Number 3
Dates Received 21 March 2021; revised manuscript received 12 June 2021; published online 25 June 2021
Citation Phibarisha Sohtun, Mousumi Bora, Rupam Kataki, et al., J. Nano- Electron. Phys. 13 No 3, 03016 (2021)
DOI https://doi.org/10.21272/jnep.13(3).03016
PACS Number(s) 89.30.ag, 81.05.U −
Keywords Carbon material (2) , Indian coal, Tertiary coal, Chemical activation, Activated carbon.

Carbon materials have unique structural and chemical properties attracting for applications in various fields. Coal is available in abundance and a low-cost energy source. Coal is a major source of carbon which can be used as a precursor to derive value-added carbon products and thereby, enhances its effective utilization in a sustainable manner. In this study, activated carbons were prepared from tertiary coal obtained from North-eastern region of India. The preparation process consisted of pre-treatment of coal by oxidation followed by mixed alkali impregnation and carbonization at 600 C. The synthesized samples were characterized using proximate and ultimate analysis, sulfur analysis, surface area and pore size analysis, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and powder X-ray diffraction (XRD) analysis. The results reveal that the produced activated carbons have improved specific surface area and pore size after chemical activation, and they are amorphous, micro-mesoporous in nature. Thus, the low-grade Indian tertiary coals are a potential source to derive activated carbon based high value-added carbon products.

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