Characterization of Aluminum(III) Complexes in Coal Organic Matter

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of Aluminum(III) Complexes in Coal Organic Matter

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Characterization of Aluminum(III) Complexes in Coal Organic Matter

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DD - Geochemie

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

American Journal of Analytical Chemistry

ISSN

2156-8251

e-ISSN

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Svazek periodika

7

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

378-394

Kód UT WoS článku

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EID výsledku v databázi Scopus

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