Insight into Effects of Acid Treatment on Physicochemical Properties of Huadian Oil Shale

Huan Song; Sheng Bai; Kangshun HanLiping SongXiangchun LiuPing Cui

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Insight into Effects of Acid Treatment on Physicochemical Properties of Huadian Oil Shale

机译：Insight into Effects of Acid Treatment on Physicochemical Properties of Huadian Oil Shale

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To explore the effects of acid treatment on the physicochemical properties of Huadian oil shale (OS), low-temperature nitrogen gas adsorption (LTN_2GA), scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, Electron Paramagnetic Resonance (EPR), and thermogravimetric (TG) analysis were used to analyze OS and the acid-treated OS (OSA). LTN_2GA showed that acid treatment promoted the formation of mesopores and increased the pore connectivity of OS. SEM showed the acid treatment increased the surface roughness of OS. From XRD analysis, most quartz, corundum, and calcite were removed from OS caused by acid treatment. According to the FT-IR analysis, the content of carboxylic acid in OS increased after acid treatment. EPR showed that the concentration of free radicals in OS decreased after acid treatment because of the removal of transition metal free radicals. The TG results showed acid treatment increased the pyrolysis intensity of OS. Overall, acid treatment can effectively remove minerals, and its effects on organic matter were not obvious.

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来源
《Solid fuel chemistry》 |2022年第1期|67-73|共7页
作者
Huan Song; Sheng Bai; Kangshun HanLiping SongXiangchun LiuPing Cui;
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作者单位

Anhui Province Key Laboratory of Coal Clean Conversion and High Valued Utilization, School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui, 243002 China;

Anhui Province Key Laboratory of Coal Clean Conversion and High Valued Utilization, School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui, 243002 China,KEDA (Anhui) Clean Energy Co, Ltd., Ma'anshan, Anhui, 243021 C;

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正文语种英语
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关键词
oil shale; demineralization; physicochemical properties;

Insight into Effects of Acid Treatment on Physicochemical Properties of Huadian Oil Shale

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