Reaction of coals in hot acidic phenol at constant acid concentration

Larsen, John W.; Lee, Doyoung

doi:10.1016/0016-2361(83)90161-8

Cited by 11 publications

(1 citation statement)

References 21 publications

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“…In the later work it was found that most of the individual compounds identified are in fact condensation products of phenol, such as derivatives of xanthene, and little information about coal structure emerged (Larsen and Kuemmerle, 1976;Franz et a/., 1977). The coal-derived products from the reaction are poly meric and mostly of high molecular weight (Larsen and Choudhury, 1979;Larsen and Lee, 1983a); a consequence is that NMR studies of solutions refer only to part of the l H (Larsen and Lee, 1983a). The products soluble in a benzene/ethanol mixture are mostly artifacts from the phenol.…”

Section: Heredy Depolymerizationmentioning

confidence: 99%

An Essay on the Organic Geochemistry of Coal

Given¹

1984

Coal Science

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Section: Heredy Depolymerizationmentioning

confidence: 99%

An Essay on the Organic Geochemistry of Coal

Given¹

1984

Coal Science

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Reactions of carbocations with carbanions through coordination and single electron transfer. Heterolysis and homolysis of carbon‐carbon bonds

Arnett¹,

Whitesell²,

Amarnath³

et al. 1988

Makromolekulare Chemie. Macromolecular Symposia

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-Carbocations, carbanions and free radicals are the most important reactive intermediates in organic chemistry and the majority of bond-forming and bondbreaking reactions involve their participation at some stage. We will review briefly our studies, over the past five years, of the direct coordination reaction between carbocations and carbanions to form covalent bonds in solution. We have gathered considerable thermodynamic and kinetic information for this reaction.the measurement and analysis of heterolysis energies. Heterolysis is the reverse of the coordination reaction and we have obtained heterolysis energies in solution for over 160 bonds by measuring the heats of reaction between several resonance-stabilized carbocations and a variety of carbanions, oxyanions, nitranions & thiophenoxide ions in solution. The results are correlated by very simple equations so that heats of heterolysis may be predicted with considerable precision from readily available data.transfer to form free radicals. We will describe recent experiments which demonstrate that under appropriate conditions all three types of reactive intermediates can coexist at equilibrium in solution with the electrons shuttling between the three different species.

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Molecular and Colloidal Structure of Coal Asphaltenes and Other Heavy Solvent Soluble Components

Iino

Takanohashi

1998

Structures and Dynamics of Asphaltenes

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Reaction of coals in hot acidic phenol at constant acid concentration

Cited by 11 publications

References 21 publications

An Essay on the Organic Geochemistry of Coal

An Essay on the Organic Geochemistry of Coal

Reactions of carbocations with carbanions through coordination and single electron transfer. Heterolysis and homolysis of carbon‐carbon bonds

Molecular and Colloidal Structure of Coal Asphaltenes and Other Heavy Solvent Soluble Components

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