By a News Reporter-Staff News Editor at Energy & Ecology Business -- New research on Fuel Research is the subject of a report. According to news reporting originating from Beijing, People’s Republic of China, by VerticalNews correspondents, research stated, “The structural transformations in three coal components, barkinite, vitrinite and resinite, on heat-treatment from 200 to 700 degrees C were investigated by high-resolution transmission electron microscopy (HRTEM) technique. The orientation in chemical structure was examined by HRTEM image.”
Funders for this research include National Natural Science Foundation of China, China University of Mining & Technology.
Our news editors obtained a quote from the research from the China University of Mining and Technology, “The orientation in aromatic layers of three coal components increased gradually on heating from 200 degrees C to 700 degrees C. Vitrinite followed barkinite’s transition some 50 degrees C later in temperatures of chemical structural change than barkinite. The transformations of structural parameters derived from TEM images of three coal components were different, including the interlayer spacing (d), the layer size (La), the number of aromatic layers per stack (n), and the aromatic layer stacking height (Lc). At least three temperature stages (200-400, 400-600, and 600-700 degrees C) were shown. Barkinite has similar change trends of d, Lc, and n with resinite however the La values were similar to vitrinite at 200-700 degrees C. Both barkinite and resinite had significant decreased d values at 200-400 degrees C and gradual decreased from 400 degrees C to 600 degrees C. The values of Lc and n for barkinite and resinite exhibit no obvious changes at 200-400 degrees C and increased significantly > 450 degrees C. Vitrinite decrease significantly in d from 450 to 600 degrees C (4.32-3.62 angstrom) and increase greatly in Lc and d up to 450 degrees C (12.84-20.29 angstrom). Vitrinite and barkinite have two temperature ranges for increasing significantly in La from 400 degrees C to 700 degrees C. When the temperature is > 600 degrees C, these coal components had much larger Lc, n, and La values with temperature increasing and decreased gradually in d values.”
According to the news editors, the research concluded: “The variation of structural parameters when heating was explained by the alteration of chemical structures in coal on pyrolysis and plastic behavior.”
For more information on this research see: Chemical structural transformations of different coal components at the similar coal rank by HRTEM in situ heating. Fuel , 2018;218():140-147. Fuel can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Fuel - http://www.journals.elsevier.com/fuel/)
The news editors report that additional information may be obtained by contacting Y.G. Tang, China Univ Min & Technol Beijing, Coll Geoscience & Surveying Engn, Beijing 100083, People’s Republic of China. Additional authors for this research include S.Q. Wang, H. Chen, P.H. Liu and Y.M. Sha.
The direct object identifier (DOI) for that additional information is: https://doi.org/10.1016/j.fuel.2018.01.024. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.
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CITATION: (2018-05-04), Reports from China University of Mining and Technology Highlight Recent Findings in Fuel Research (Chemical structural transformations of different coal components at the similar coal rank by HRTEM in situ heating), Energy & Ecology Business, 584, ISSN: 1945-6956, BUTTER® ID: 015605740
From the newsletter Energy & Ecology Business.
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