A Physico-chemical Aspect of Coals

Autor:	Chikao Yokokawa
Rok vydání:	1979
Předmět:	business.industry Chemistry technology industry and agriculture General Engineering Mineralogy complex mixtures respiratory tract diseases Caking Chemical engineering Hydrogenolysis Specific surface area otorhinolaryngologic diseases Molecule Coal Particle density Porosity business Pyrolysis
Zdroj:	Journal of the Fuel Society of Japan. 58:64-74
ISSN:	2185-226X 0369-3775
DOI:	10.3775/jie.58.64
Popis:	Review and digest of the preceeding literatures were made in order to demonstrate a physico-chemical aspect of coals.Appearent density, porosity and specific surface area were considered at a stand point of the way of constructing the coal matrix. True density, reflectance and hardness were regarded, in a connection with their ultimate composition, as functions reflecting the chemical structure of coal molecule. Thermo-plasticity were discussed with solvent-extraction experiments and with chemical constitution for a general understanding of the caking property of coal.Chemical reactions such as oxidation, pyrolysis, hydrogenolysis and depolymerization were outlined and specific behaviours of various coals of different ranks were discussed.
Databáze:	OpenAIRE
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