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Investigation of the Adsorption Process in Coal Using X-ray Diffraction.

Chang S; Brown PF
For Reference Only At Bureau Libraries :14 pages
An exploratory research was done on untreated coal using x-ray diffraction techniques. A comparison was made of diffraction data before and after pressurized methane was added to the coal samples. Although only qualitative data were obtained, the following statements about untreated coal seem plausible: there are other materials in coal that are accumulated in layers causing the macroscopic layered structure of coal; the partial graphitization of the fixed carbon in coal assumes random orientations; the methane adsorbed in coal is held in its microspore system, and there is no evidence of bonding to carbon by x-ray diffraction measurements; the methane in coal microspores assumes no structure itself at room temperature; and, finally, some of the other materials in coal are present in the form of hydrated crystallites which have anisotropic growth habits in the layers.
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For Reference Only At Bureau Libraries
Page last reviewed: December 23, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division