Condensation mechanism of formation of mellitic acid precursors from coals and organic matters in HNO/sub 3/-H/sub 2/SO/sub 4/ mixtures

Journal Article · Mon Sep 01 04:00:00 EDT 1986 · Dokl. Phys. Chem. (Engl. Transl.); (United States)

OSTI ID:5605557

Rudakov, E S; Savos'kin, M V; Rudakova, R I

The authors found recently that oxidation of anthracite with nitric acid under drastic conditions (180/sup 0/C) is catalyzed by strong acids like H/sub 2/SO/sub 4/, HSO/sub 3/Cl, or CH/sub 3/SO/sub 3/H. It can be suggested that, in addition to the well-known oxidation path of mellitic acid (MA) precursor creation, condensation processes play an important (for poorly metamorphosed coals perhaps even a dominant) part in a strong acidic-catalytic system. They obtained two independent proofs of this hypothesis. First, it was found that under the acidic-catalytic oxidecomposition conditions the MA yield from coals (through condensation processes) is much higher than that in two-stage oxidation under mild conditions, the effect being greater, the lower the carbon content in the coal. Second, under the conditions of the single-stage acidic-catalytic process MA is produced from poorly condensed aromatic compounds like anthracene and even from substances containing no aromatic or hydroaromatic fragments, e.g., from cellulose, glycerin, and ethylene glycol.

• Research Organization: Institute of Physical Organic Chemistry and Coal Chemistry, Donetsk, USSR
• OSTI ID: 5605557
• Journal Information: Dokl. Phys. Chem. (Engl. Transl.); (United States), Journal Name: Dokl. Phys. Chem. (Engl. Transl.); (United States) Vol. 287:1-3; ISSN DKPCA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010500 -- Coal
Lignite
& Peat-- Products & By-Products
ALCOHOLS
ALKANES
ANTHRACENE
AROMATICS
CARBOHYDRATES
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CATALYSTS
CATALYTIC EFFECTS
CELLULOSE
CHEMICAL FEEDSTOCKS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL
COAL RANK
COMPARATIVE EVALUATIONS
CONDENSED AROMATICS
DEHYDROCYCLIZATION
DIAZO COMPOUNDS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GLYCEROL
GLYCOLS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
KINETICS
MATERIALS
MATERIALS TESTING
MELLITIC ACID
METHANE
METHYLATION
NITRIC ACID
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
PHENANTHRENE
POLYSACCHARIDES
PRECURSOR
PYRENE
REACTION KINETICS
SACCHARIDES
SULFURIC ACID
TESTING
YIELDS