Enhanced Oxidative Reactivity for Anthracite Coal via a Reactive Ball Milling Pretreatment Step

Reactive ball milling in a cyclohexene solvent significantly increases the oxidative reactivity of an anthracite coal, due to the combined effects of particle size reduction, metal introduction, introduction of volatile matter, and changes in carbon structure. Metals introduced during milling can be...

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Bibliographic Details
Published inEnergy & fuels Vol. 23; no. 9; pp. 4318 - 4324
Main Authors Lueking, Angela D, Sakti, Apurba, Alvarez-Fonseca, Dania, Wonderling, Nichole
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 17.09.2009
Subjects
01 COAL, LIGNITE, AND PEAT
ANTHRACITE
CHARS
Combustion
COMMINUTION
METALS
MORPHOLOGY
OXIDATION
PARTICLE SIZE
REACTIVITY
SOLVENTS
VOLATILE MATTER
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Summary:Reactive ball milling in a cyclohexene solvent significantly increases the oxidative reactivity of an anthracite coal, due to the combined effects of particle size reduction, metal introduction, introduction of volatile matter, and changes in carbon structure. Metals introduced during milling can be easily removed via a subsequent demineralization process, and the increased reactivity is retained. Solvent addition alters the morphological changes that occur during pyrolysis and leads to a char with significantly increased reactivity. When the solvent is omitted, similar effects are seen for the milled product, but a significant fraction of the char is resistant to oxidation.
ISSN:0887-0624
1520-5029
DOI:10.1021/ef900390e