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 best yield of hydrogen was obtained from medium rank (C, 83.5%) Poniati-Girimint coal, while other alkalis (Ca(OH)2, CaCO3, Na2CO3) gave much less hydrogen, but significantly more methane in the product gas.
8 citations
TL;DR: In this paper, three-tier brown coals, earthy and xylytic, were sulphonated with 96% sulphuric acid at 60 and 140 °C.
8 citations
TL;DR: In this paper, the C-13/C-12 ratios of fractions with different functionality (saturates, aromatics, polar aromatics and asphaltenes) separated during mild coal-oil coprocessing runs were determined by stable isotope ratio mass spectrometry on the CO2 produced by quantitative combustion.
8 citations
7 citations
TL;DR: In this paper, it has been established that the time required for separation and isother the reaction mixture is left too long in the extraction environment, the intermediate labile sulfur released by the reaction forms cross-links with the organic matter in the macromolecule of coal This is detrimental to the process efficiency.
Abstract: The perchloroethylene extraction desulfurization process removes the organic sulfur in coal via a hybrid mechanism of solvent extraction and chemical reaction The nature and extent of the reaction is controlled by the extraction time and temperature of operation Although the extraction temperature is kept identical for all types of coals (120°C), the organosulfur extraction time still depends upon the type of coal If the reaction mixture is left too long in the extraction environment, the intermediate labile sulfur released by the reaction forms cross-links with the organic matter in the macromolecule of coal This is detrimental to the process efficiency Constant temperature has to be maintained throughout the extraction, till coal is separated from the solvent If not, the extracted labile sulfur re-enters the coal macromolecule to form inter-penetrating polymer networks with the organic matter in coal In this paper, it has been established that the time required for separation and isother
7 citations