Journal ArticleDOI
Ruthenium tetroxide catalysed oxidation of illinois no.6 coal and some representative hydrocarbons
Leon M. Stock,Kwok-tuen Tse +1 more
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TLDR
The use of ruthenium tetroxide for the catalytic oxidation of coal molecules under mild conditions has been examined in this paper, where the selectivity of the reagent for aromatic nuclei has been assessed by a study of the oxidation of selected benzene, naphthalene and phenanthrene derivatives.About:
This article is published in Fuel.The article was published on 1983-08-01. It has received 102 citations till now. The article focuses on the topics: Ruthenium tetroxide & Catalytic oxidation.read more
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Journal ArticleDOI
The structure of kerogen and related materials. A review of recent progress and future trends
TL;DR: A combination of elemental analysis, spectroscopic information and chemical data from pyrolysis, bitumen composition in natural rocks and sometimes chemical degradation were used to develop constitutional models of kerogens or asphaltenes of different origins and different levels of thermal evolution as discussed by the authors.
Book ChapterDOI
An Essay on the Organic Geochemistry of Coal
Abstract: Publisher Summary It is the geoscience of coals, that is, their geochemistry of origin and postburial geological history, that suggests that coals are a very diverse set of materials. This chapter discusses the relations between the chemistry of coal macerals and reviews the biochemistry of their precursors and the biological markers in coals that are indicative of their origins. The content of carboxyl groups in coals is commonly determined by an ion-exchange reaction with barium acetate. Values of 1–4 milliequivalents per gram have been found for lignites and lower-rank subbituminous coals—decreasing with increasing rank and essentially zero for coals of higher rank—except that HVC coals of the Rocky Mountain province may contain some carboxyl. The cations in the carboxylates of low-rank coals can give rise to calcite deposits in liquefaction reactors, can promote liquefaction, and can give rise to catalysts for the gasification of lignite chars.
Journal ArticleDOI
Separation and structural characterization of the value-added chemicals from mild degradation of lignites: A review
TL;DR: In this paper, a review of mild and eco-friendly utilization technologies for lignite is presented, focusing on mild (low moisture content, high ash yield, and low calorific value).
Journal ArticleDOI
Structural investigations of sulphur-rich macromolecular oil fractions and a kerogen by sequential chemical degradation
TL;DR: The authors performed structural studies of a sulphur-rich kerogen and macromolecular oil fractions from the Monterey Formation by selective sequential chemical degradation, providing low-molecular weight compounds as former building blocks of the network which allow detailed analyses on a molecular level.
Journal ArticleDOI
Investigation on structural features of Shengli lignite through oxidation under mild conditions
Fang-Jing Liu,Xian-Yong Wei,Ying Zhu,Juan Gui,Yu-Gao Wang,Xing Fan,Yun-Peng Zhao,Zhi-Min Zong,Wei Zhao +8 more
TL;DR: In this paper, structural features of Shengli lignite (SL) were investigated through ruthenium ion-catalyzed oxidation and oxidations in aqueous hydrogen peroxide (AHPO) and sodium hypochlorite (ASHC) under mild conditions.
References
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Journal ArticleDOI
A greatly improved procedure for ruthenium tetroxide catalyzed oxidations of organic compounds
Abstract: Addition of acetonitrile to the traditional CCl4/H2O solvent system for ruthenium tetraoxide catalyzed oxidations leads to a greatly improved system; some applications to olefins, alcohols, aromatic rings, and ethers are described. © 1981, American Chemical Society. All rights reserved.
Journal ArticleDOI
New method for elucidating the structures of coal
TL;DR: A mixture of 30% aqueous hydrogen peroxide (H 2 O 2 ) and trifluoroacetic acid (TFA) dissolves coals to give colourless solutions as mentioned in this paper.
Journal ArticleDOI
Dihydroaromatic structure of Illinois No. 6 Monterey coal
Norman C. Deno,Kenneth W. Curry,Barbara A. Greigger,A. Daniel Jones,Walter G. Rakitsky,Karen Ann Smith,Karen Wagner,Robert D. Minard +7 more
TL;DR: In this paper, the epoxides of ethylene tri-and tetra-carboxylic acids were identified as the major products of the Monterey coal mine in Illinois No. 6 seam.
Journal ArticleDOI
Aryl-alkyl groups in coals
Norman C. Deno,A. Daniel Jones,Charles C. Koch,Robert D. Minard,Thomas Potter,Robert S. Sherrard,Justin G. Stroh,Richard J. Yevak +7 more
TL;DR: In this article, a method was developed for detecting ethyl, propyl, and isopropyl substituents on aryl rings in coals, and the results showed that 0.1-0.3% of the carbon was in arylsethyl groups.
Related Papers (5)
Ruthenium tetroxide catalysed oxidation of coals: The formation of aliphatic and benzene carboxylic acids
Leon M. Stock,Shih-Hsien Wang +1 more