Characterization of Aluminum(III) Complexes in Coal Organic Matter

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F16%3A00461600" target="_blank" >RIV/67985891:_____/16:00461600 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.4236/ajac.2016.74036" target="_blank" >http://dx.doi.org/10.4236/ajac.2016.74036</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4236/ajac.2016.74036" target="_blank" >10.4236/ajac.2016.74036</a>

Result language
angličtina
Original language name
Characterization of Aluminum(III) Complexes in Coal Organic Matter
Original language description
For geochemical purposes, complex aluminum compounds in coal organic matter in different types of coal were identified by the 27Al MAS NMR method. Low ash samples of different types of coals, xylite and gagatite were analyzed. It was found that the significant peak at chemical shift at 3.5–4 ppm in spectra corresponds to that obtained for triaquo-hydroxo-diphenoxido-aluminum(III) complex, further, the existence of triaquo-triphenoxido-aluminum(III) complex in the spectra of can be approved by the chemical shift at 13.5–15 ppm. These findings indicate that at least two different Al complexes were identified in coal organic matter. Further it was found that these complexes are concentrated in vitrinite fraction (alicyclic-aromatic part of coal), notably in collotelinite (gelified and homogenous vitrinite constituent). Ways of Al complexes formation in coal are suggested and their thermal stability discussed.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DD - Geochemistry
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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