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Исследование влияния механохимической обработки на процесс гидрогенизации угля

Исследование влияния механохимической обработки на процесс гидрогенизации угля

Abstract

The coal mechanochemical processing infl uence on an liquid products exit in the process of coal catalytical hydrogenation is investigated. Optimum time of coal dispergating is educed. Hydrocarbonic composition of coal hydrogenation products investigated by the chromatography method and positive infl uence of mechanochemical activation on the process of coal hydrogenation was shown. It is shown by the EPR method that as a result of mechanical processing the coal free-radical conditions (FRC) concentration is increasing as the function of coal activation time is observed. The decrease in FRC concentration is observed in the coal activated during 60 minutes. It testifi es that there is a recombination of formed free radicals at more lasting processing of coal. The increase in concentration of trivalent iron is observed at mechanical activation of coal. Apparently, the part of iron which is in a bivalent condition passes in a trivalent condition as a result of mechanical activation. Signal intensity from ions of trivalent iron grows so far as increase in time of comminuting.

Исследовано влияние механохимической обработки угля на выход жидких продуктов в процессе каталитической гидрогенизации угля. Выявлено оптимальное время диспергирования угля. Методом хроматографии исследован углеводородный состав угольного гидрогенизата и показано положительное влияние механохимческой активации на процесс гидрогенизации угля. Методом ЭПР показано, что в результате механической обработки наблюдается увеличение концентрации свободнорадикальных состояний (СРС) угля в зависимости от времени его активации. В активированном в течение 60 минут угле наблюдается снижение концентрации СРС. Это свидетельствует о том, что при более продолжительной обработке угля происходит рекомбинация образующихся свободных радикалов. При механоактивации угля наблюдается увеличение концентрации трёхвалентного железа. По-видимому, часть железа, находящаяся в двухвалентном состоянии, в результате механоактивации переходит в трёхвалентное состояние. Интенсивность сигнала от ионов трёхвалентного железа растёт по мере увеличения времени измельчения.

Keywords

УГОЛЬ, КАТАЛИТИЧЕСКАЯ ГИДРОГЕНИЗАЦИЯ, МЕХАНОХИМИЧЕСКАЯ АКТИВАЦИЯ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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