Intensification of the Oxidation of Lignite and Coal by an Activating Additive of Fe(NO3)2 Full article
| Journal |
Solid Fuel Chemistry
ISSN: 0361-5219 , E-ISSN: 1934-8029 |
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| Output data | Year: 2019, Volume: 53, Number: 5, Pages: 262-269 Pages count : 8 DOI: 10.3103/S0361521919050070 | ||||
| Tags | lignite bituminous coal initial oxidation temperature activated oxidation iron nitrate thermogravimetric analysis mass-spectrometric analysis | ||||
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| Affiliations |
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Funding (2)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0014 |
| 2 | The Ministry of Education and Science of the Russian Federation | 13.7644.2017/БЧ |
Abstract:
The oxidation of lignite and bituminous coal modified with an activating additive of Fe(NO3)2 (5 wt %) was investigated. Iron nitrate was applied by incipient wetness impregnation with the preliminary dissolution of Fe(NO3)2 in a water–alcohol solution with the volume ratio C2H5OH : H2O = 50 : 50. The reactivity of the samples was studied by thermogravimetric analysis in the oxidation mode at a heating rate of 2.5 K/min in a temperature range of 25–600°C at atmospheric pressure. It was established that the use of the activating additive decreased the initial temperature of intense oxidation (Δti = 77°C) and shifted the overall process to the low-temperature region. The qualitative analysis of the gas-phase products of bituminous coal oxidation was performed by mass spectrometry, and it was found that a decrease in the initial temperature of the release of volatile compounds was associated with the decomposition of iron nitrate. The activation energies of oxidation processes in the presence of iron nitrate were calculated using the Coats–Redfern method. A maximum decrease in Ea (from 74.0 to 64.4 kJ/mol) was observed in a modified sample of bituminous coal. A possible mechanism of the action of iron nitrate, which leads to the activation of the oxidation processes of the test coals, is discussed.
Cite:
Larionov K.B.
, Mishakov I.V.
, Slyusarskii K.V.
, Gubin V.E.
, Vedyagin A.A.
Intensification of the Oxidation of Lignite and Coal by an Activating Additive of Fe(NO3)2
Solid Fuel Chemistry. 2019. V.53. N5. P.262-269. DOI: 10.3103/S0361521919050070 WOS Scopus РИНЦ AN OpenAlex
Intensification of the Oxidation of Lignite and Coal by an Activating Additive of Fe(NO3)2
Solid Fuel Chemistry. 2019. V.53. N5. P.262-269. DOI: 10.3103/S0361521919050070 WOS Scopus РИНЦ AN OpenAlex
Original:
Ларионов К.Б.
, Мишаков И.В.
, Слюсарский К.В.
, Губин В.Е.
, Ведягин А.А.
Интенсификация процесса окисления бурого и каменного углей активирующей добавкой Fe(NO3)2
Химия твердого топлива. 2019. №5. С.12-19. DOI: 10.1134/S0023117719050074 РИНЦ OpenAlex
Интенсификация процесса окисления бурого и каменного углей активирующей добавкой Fe(NO3)2
Химия твердого топлива. 2019. №5. С.12-19. DOI: 10.1134/S0023117719050074 РИНЦ OpenAlex
Dates:
| Submitted: | Mar 14, 2019 |
| Accepted: | Jun 3, 2019 |
| Published print: | Sep 1, 2019 |
| Published online: | Oct 4, 2019 |
Identifiers:
| Web of science: | WOS:000488928500002 |
| Scopus: | 2-s2.0-85073694465 |
| Elibrary: | 41711591 |
| Chemical Abstracts: | 2019:1911428 |
| OpenAlex: | W2979071131 |