Topic
Carbochemistry
About: Carbochemistry is a research topic. Over the lifetime, 1010 publications have been published within this topic receiving 16626 citations.
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TL;DR: In this article, the solvent swelling technique is applied to coal residues obtained by catalytic hydrogenation, to monitor the changes produced in crosslinking density during the hydrogenation process, and an attempt is made to correlate the volumetric swelling ratio with coal rank, temperature and residence time as well as with gas evolution (CO 2 and H 2 S).
13 citations
TL;DR: In this paper, the results of catalytic hyroliquefaction under batch conditions depend on a large number of variables, such as the influence of the catalyst concentration, the mode of sulfidation or the introduction of the catalysts in the coal/solvent mixture, and the nature of the model compound solvent.
13 citations
TL;DR: In this paper, the influence of digestion and filtration conditions in a coal liquefaction process have been investigated to determine their effect on ash levels and trace elements in the extract solution.
13 citations
TL;DR: The mechanism for the formation of sulphate and sulphides in sulphur-promoted iron oxide catalysts for coal liquefaction has been discussed in this paper, where the catalysts used were FeS, FeS 2 and Fe 3 O 4 of analytical reagent grade, and iron (Fe 2 O 3 ) prepared by precipitation from ferric nitrate.
13 citations
TL;DR: In this article, the effects of reaction time and temperature are coupled via a severity index that arises in the model as a dimensionless reaction time, and it is shown that the product distribution for a particular coal seems to be a function only of the conversion even in the presence of catalysts.
Abstract: Experimental kinetic data for three Australian coals compared with predictions from the mathematical model developed. For these coals, as well as data reported for North American coals, the model is found to show good agreement, using the characteristic molecular weight as the only parameter. The effects of reaction time and temperature are coupled via a severity index that arises in the model as a dimensionless reaction time. The model is also shown to be applicable when catalysts are present. The product distribution for a particular coal seems to be a function only of the conversion even in the presence of catalysts, as long as the chemical reaction controls the rate of liquefaction.
13 citations