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, a comprehensive bench-scale study to determine and compare char reactivities and properties of three lignites, a subbituminous coal, and two bituminous coals in uncatalyzed, alkali-catalyzed and demineralized forms was carried out.
Abstract: A comprehensive bench-scale study to determine and compare char reactivities and properties of three lignites, a subbituminous coal, and two bituminous coals in uncatalyzed, alkali-catalyzed, and demineralized forms was carried out. The catalytic effect of laboratory-grade K 2 CO 3 and ferrous ammonium sulfate (FAS) and the natural minerals trona, limestone, and taconite on the reactivities of the chars were studied. Trona, limestone, and taconite improved gasification rates of the chars by 2-10 times over the rates of the uncatalyzed reactions. Reactivities were shown to correlate reasonably well with measured active sites
6 citations
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TL;DR: In this paper, the relative concentrations of preasphaltenes and lighter hydrocarbons in small aliquots of the reaction product mix that were withdrawn from the autoclave at frequent intervals and immediately quenched were investigated.
6 citations
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TL;DR: In this article, a group contribution method was used to estimate the vapour pressures of coal liquids from the solvent refined coal II (SRC-II) and Wilsonville integrated two stage liquefaction (ITSL) processes.
6 citations
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Metz1
TL;DR: In this article, the authors investigated the influence of the presence of tetralin and sulfur catalysts on the performance of hydroliquefaction at 350, 400 and 430°C.
6 citations
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TL;DR: In this article, coal from Midwestern States were extracted using two different processes, viz., a supercritical extraction process and a perchloroethylene coal refining process, with the objectives of these processes are the selective removal of sulfur and nitrogen compounds from high-sulfur coals.
Abstract: Coals from Midwestern States were extracted using two different processes, viz., a supercritical extraction process and a perchloroethylene coal refining process. The objectives of these processes are the selective removal of sulfur and nitrogen compounds from high-sulfur coals. The solvent extracts were analyzed using gas chromatography/mass spectrometry as well as wet chemical analysis. The extracted organosulfur compounds varied, depending upon the extraction process, extraction conditions, type of solvent, type of coal, and degree of weathering. The experimental results are compared among the types of coal as well as among the different processes, from viewpoints of chemical and molecular interaction.
6 citations