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This paper describes a method which allows an analysis of main elements in coal by neutron induced prompt y-ray analysis. An experimental equipment and analysis method were established. C, H, 0. N, S, Cl, Si, Al. Fe, Ca, Ti, and Na in coal samples were determined and the obtained results were in good agreement with those obtained by chemical analysis 97101593
Sulfur functionalities and physical characteristics of the Maritza lztok Basin lignite, Bulgaria
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Effect of coal preoxidation on the development of microporosity in activated carbons P;trra. .I B. ('t ul.. C01%)0)1. lY9h. 34, (h), 7X3-787. This paper looks at the preparation of activated carbons from a \emtanthracite preoxldized in air to different degrees. The activation was carried out in stea
0 1 Solid fuels (preparation) of exinite and vitrinite with the broad Lorentz 1 lines. Intensities (I) of the broad Gauss and the narrow Lorentz 3 lines of exinite and vitrinite changes with temperature according to the Curie law (I = Cm). The existence of thermally excited multiplet states was not