Influence of the Heating Rate on the Activation of Coal and Lignite Oxidation by Copper Nitrate; Coke and Chemistry; Vol. 63, iss. 8

Influence of the Heating Rate on the Activation of Coal and Lignite Oxidation by Copper Nitrate; Coke and Chemistry; Vol. 63, iss. 8

Bibliographic Details
Parent link:Coke and Chemistry
Vol. 63, iss. 8.— 2020.— [P. 2-9]
Corporate Author: Национальный исследовательский Томский политехнический университет Инженерная школа энергетики Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова)
Other Authors: Larionov K. B. Kirill Borisovich, Mishakov I. V. Iljya Vladimirovich, Zenkov A. V. Andrey Viktorovich, Slusarskiy (Slyusarsky) K. V. Konstantin Vitalievich, Gromov A. A. Aleksandr Aleksandrovich
Summary:Title screen
Adding copper nitrate Cu(NO3)2 is known to activate the oxidation of coal and lignite. In the present work, the change in its activating properties with increase in the heating rate is studied. The Cu(NO3)2 is first dissolved in a 50/50 (by volume) mixture of ethyl alcohol and water. Then it is applied to the fuel by steeping, to a content of 5 wt %. Activated oxidation is studied by thermal analysis, with different heating rates (2.5, 10, 20, and 40°C/min) in the temperature range 25–1000°C, at atmospheric pressure. With increase in heating rate, the catalytic effect of the additive is intensified: the initial (30–115°C) and final (85–180°C) oxidation temperatures fall, with increase in the maximum reaction rate. Mass-spectrometric analysis of the gaseous oxidation products shows that, in the presence of copper nitrate, increase in the heating rate leads to greater CO2 emission, with shorter oxidation time. The dependence of the activation energy on the degree of fuel conversion is determined by the Friedman method. The decrease in the mean activation energy when using Cu(NO3)2 is ~14 kJ/mol for lignite and ~35 kJ/mol for coal.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2020
Subjects:
электронный ресурс
труды учёных ТПУ
coal
lignite
heating rate
activated oxidation
copper nitrate
thermogravimetric analysis
mass-spectrometric analysis
уголь
окисление
термогравиметрический анализ
масс-спектрометрический анализ
Online Access:https://doi.org/10.3103/S1068364X20080037
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664826

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