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: The concentrations of moderate to low boiling phenolics were determined by isolating and acidic concentrate by extraction with sodium hydroxide, freeing the phenolics by acid addition, and analyzing the fraction by gas chromatography/mass spectrometry and high-resolution mass spectrometric analysis as discussed by the authors.
Abstract: The concentrations of moderate to low boiling phenolics were determined by isolating and acidic concentrate by extraction with sodium hydroxide, freeing the phenolics by acid addition, and analyzing the fraction by gas chromatography/mass spectrometry and high-resolution mass spectrometry. The phenolics derived from both Illinois No. 6 and Wyodak coals are primarily found in the 175-315°C boiling range. They chiefly consist of four types of ring structures: phenols, indanols, naphthols, and biphenylols/acenaphthols. With the introduction of a catalyst to the first-stage reactor, additional deoxygenation occurs, and there is a trend toward selectively reducing nonhindered phenolics
22 citations
TL;DR: The filterable solids from coliquefaction were about 30% benzene soluble compared to about 10% soluble when the same amounts of coal and lignin were reacted individually.
Abstract: The filterable solids from coliquefaction were about 30% benzene soluble compared to about 10% soluble when the same amounts of coal and lignin were reacted individually. In the case of coliquefaction, far more of the benzene-soluble material was also pentane-soluble oil. As a result of coreaction, significant amounts of nitrogen from the coal appeared in the liquid product in contrast to no observable nitrogen in the liquefaction product of coal alone under ‘comparable conditions. Gaseous products were significant and contained C02 as a major component. More carbon-14 from the lignin got incorporated into the liquid product during coliquefaction of coal and liqnin than in the case of liquefaction of lignin alone under comparable conditions.
22 citations
Book•
01 Jan 1976
TL;DR: In this article, the authors provide readily accessible and concise data on all major activities in coal conversion technology, including coal conversion processes for the production of solid, liquid, and gaseous products.
Abstract: This book provides readily accessible and concise data on all major activities in coal conversion technology. The many processes and techniques of coal conversion have as a basic concept the transmutation of coal into forms acceptable to transportation and heating equipment. To accomplish this, high-sulfur coals must be desulfurized, high-ash coals must be demineralized, and solid coal must be depolymerized into liquid and Gaseous Products that can be ignited and burned with facility. Over 100 processes in various stages of development are discussed. Other information provided includes acronyms and a glossary of terms. The data are given in three main sections: Section I, Coal Conversion Processes for the Production of Solid, Liquid, and gaseous products; Section II, High-Btu Coal Gasification Processes; and Section III, Low- and Medium-Btu Coal Gasification Processes. Additional information is provided on patented processes not in a significant stage of development at present. Separate appendixes cover the following: major governmental, semi-governmental and private agencies sponsoring coal conversion research programs; alphabetical listing of companies holding major coal conversion patents; coal conversion processes for the production of liquid solid and gaseous products; and coal gasification processes for the production of substitute natural gas. (MCW)
22 citations
TL;DR: In this paper, the authors provide an overview of the properties of coal and their importance in the selection of coal for use as feedstock for coal liquefaction processes. But they do not consider the impact of petrographic composition and rank on coal decomposition.
22 citations
TL;DR: In this article, a laboratory-scale, entrained flow gasifier was used to investigate the local details of the coal gasification process, and three separate flame zones were also found for pollutants: an intense oxygen-rich flame region where very rapid reaction took place, a recirculation region and a downstream region where slow heterogeneous reactions were observed.
21 citations