Journal
IEEE ACCESS
Volume 8, Issue -, Pages 46795-46801Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2020.2978524
Keywords
Oil shale; THz spectroscopy; wave absorbing; pyrite
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Funding
- Science Foundation of China University of Petroleum, Beijing [2462017YJRC029, ZX20190163, 2462018BJC005]
- National Nature Science Foundation of China [11804392]
- University-Industry Collaborative Education Program [201901066031]
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This study demonstrates that oil shale subjected to pyrolysis at 1000 degrees C strongly absorbs electromagnetic radiation in the terahertz (THz) range. Analyses reveal obvious differences between oil shale samples with and without pyrolysis, as well as between low-middle mature shale and oil shale samples. The electromagnetic absorption effect of oil shale subjected to pyrolysis conditions is demonstrated to be strongly related to its relatively small concentration of pyrite, which progressively yields pyrrhotite and elemental Fe during pyrolysis that facilitates the absorption of THz radiation. Accordingly, oil shale can be used not only as a resource for generating oil, natural gas, and petrochemical products, but the material obtained after processing can also be employed for the absorption of THz radiation as a means of converting incident electromagnetic radiation into heat or other forms of energy, which offers substantial prospects in many engineering and technology applications.
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