Influence of Metal Nitrates on the Process of Coal Oxidation of Various Metamorphism Stages Full article
| Conference |
V Всероссийская конференция «Теплофизика и физическая гидродинамика» с элементами школы молодых ученых 13-20 Sep 2020 , Ялта |
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| Journal |
Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596 |
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| Output data | Year: 2020, Volume: 1675, Number: 1, Article number : 012062, Pages count : 6 DOI: 10.1088/1742-6596/1675/1/012062 | ||||||
| Tags | Activation energy; Additives; Atmospheric pressure; Bituminous coal; Copper compounds; Hydrodynamics; Nitrates; Oxidation; Thermogravimetric analysis | ||||||
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| Affiliations |
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Funding (1)
| 1 | Council for Grants of the President of the Russian Federation | НШ-2513.2020.8 |
Abstract:
The process of oxidation of lignite and bituminous coal modified with metal nitrates (Cu, Ce, Na, Co, Fe) in the amount of 5 wt.% is studied. Application of additives to the coal samples is carried out by the method of incipient wetness impregnation with preliminary dissolution of the additive in an aqueous-alcohol solution with a volume ratio of C2H5OH/H2O=50/50. Reactivity of the samples is studied by thermogravimetric analysis in the oxidation mode at a heating rate of 2.5 °C/min in the temperature range 25-600°C at atmospheric pressure. It has been found that application of activating additives contributes to reduction of the initial temperature of intensive oxidation (Ati=5-97°C) and to a shift of the process to the low-temperature region as a whole. According to the results obtained, the greatest activity is specific for addition of Cu(NO3)2. It is manifested in a decrease in the temperature of the beginning of intensive oxidation ti and an increase in the average reaction rate wav. The Coats-Redfern method is used to calculate activation energy of the oxidation process in the presence of activating additives. Maximum decrease in Eais observed for a copper nitrate-modified coal sample. © Published under licence by IOP Publishing Ltd.
Cite:
Larionov K.B.
, Zenkov A.V.
, Mishakov I.V.
, Gromov A.A.
Influence of Metal Nitrates on the Process of Coal Oxidation of Various Metamorphism Stages
Journal of Physics: Conference Series. 2020.
V.1675. N1. 012062
:1-6. DOI: 10.1088/1742-6596/1675/1/012062
Scopus
РИНЦ
AN
OpenAlex
Influence of Metal Nitrates on the Process of Coal Oxidation of Various Metamorphism Stages
Journal of Physics: Conference Series. 2020.
V.1675. N1. 012062
:1-6. DOI: 10.1088/1742-6596/1675/1/012062
Scopus
РИНЦ
AN
OpenAlex
Files:
Full text from publisher
Dates:
| Published print: | Dec 15, 2020 |
| Published online: | Dec 16, 2020 |
Identifiers:
| Scopus: | 2-s2.0-85098205667 |
| Elibrary: | 45052084 |
| Chemical Abstracts: | 2021:112132 |
| OpenAlex: | W3118210420 |