Effect of an Initiating Additive of CuSO4 on Changes in the Characteristics of Brown Coal Oxidation and Pyrolysis
| Parent link: | Solid Fuel Chemistry Vol. 53, iss. 2.— 2019.— [P. 120-127] |
|---|---|
| Corporate Authors: | , |
| Other Authors: | , , , |
| Summary: | Title screen The oxidation and pyrolysis of brown coal containing 5 wt % CuSO4 as an initiating additive was studied. The experiment was performed by thermogravimetry at a heating rate of 2.5 K/min in an atmosphere of air and nitrogen. The process characteristics in the pyrolysis and oxidation mode were evaluated, and the activation energy of the process was determined by the Coats–Redfern method. It was established that the addition of the initiating agent CuSO4 led to a significant decrease in the initial temperature of oxidation and pyrolysis processes to shift the reaction toward the low-temperature region. Maximum changes in the reaction initiation temperatures in the oxidation (?Ti) and (?Td) pyrolysis modes were 35 and 50°?, respectively. It was established that the introduction of CuSO4 led to a decrease in the activation energy of oxidation by 7.1 kJ/mol, and ?Ea was 10 kJ/mol for the pyrolysis process. A decrease in the residence times of a sample within the limits of the sublimation of volatile substances was observed: ?ti was 12 min for oxidation, and ?td was 18 min for pyrolysis. According to mass-spectrometric analysis data, the presence of SO2 (peaks at 230 and 320°C) was detected in the oxidation and pyrolysis reaction products of modified samples; this was explained by the chemical interaction of copper sulfate with brown coal components. Режим доступа: по договору с организацией-держателем ресурса |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://doi.org/10.3103/S036152191901004X |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660573 |
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| 200 | 1 | |a Effect of an Initiating Additive of CuSO4 on Changes in the Characteristics of Brown Coal Oxidation and Pyrolysis |f K. B. Larionov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 15 tit.] | ||
| 330 | |a The oxidation and pyrolysis of brown coal containing 5 wt % CuSO4 as an initiating additive was studied. The experiment was performed by thermogravimetry at a heating rate of 2.5 K/min in an atmosphere of air and nitrogen. The process characteristics in the pyrolysis and oxidation mode were evaluated, and the activation energy of the process was determined by the Coats–Redfern method. It was established that the addition of the initiating agent CuSO4 led to a significant decrease in the initial temperature of oxidation and pyrolysis processes to shift the reaction toward the low-temperature region. Maximum changes in the reaction initiation temperatures in the oxidation (?Ti) and (?Td) pyrolysis modes were 35 and 50°?, respectively. It was established that the introduction of CuSO4 led to a decrease in the activation energy of oxidation by 7.1 kJ/mol, and ?Ea was 10 kJ/mol for the pyrolysis process. A decrease in the residence times of a sample within the limits of the sublimation of volatile substances was observed: ?ti was 12 min for oxidation, and ?td was 18 min for pyrolysis. According to mass-spectrometric analysis data, the presence of SO2 (peaks at 230 and 320°C) was detected in the oxidation and pyrolysis reaction products of modified samples; this was explained by the chemical interaction of copper sulfate with brown coal components. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Solid Fuel Chemistry | ||
| 463 | |t Vol. 53, iss. 2 |v [P. 120-127] |d 2019 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a brown coal | |
| 610 | 1 | |a copper sulfate | |
| 610 | 1 | |a oxidation and pyrolysis processes | |
| 610 | 1 | |a activation energy | |
| 610 | 1 | |a thermal analysis | |
| 610 | 1 | |a mass-spectrometric analysis | |
| 610 | 1 | |a бурый уголь | |
| 610 | 1 | |a сульфат меди | |
| 610 | 1 | |a окисление | |
| 610 | 1 | |a пиролиз | |
| 610 | 1 | |a энергия активации | |
| 610 | 1 | |a термический анализ | |
| 610 | 1 | |a масс-спектрометрический анализ | |
| 701 | 1 | |a Larionov |b K. B. |c specialist in the field of power engineering |c technician of Tomsk Polytechnic University |f 1990- |g Kirill Borisovich |3 (RuTPU)RU\TPU\pers\35705 | |
| 701 | 1 | |a Mishakov |b I. V. |g Iljya Vladimirovich | |
| 701 | 1 | |a Vedyagin |b A. A. |c Chemist |c Chief Expert of Tomsk Polytechnic University, Candidate of chemical sciences |f 1975- |g Aleksey Anatolievich |3 (RuTPU)RU\TPU\pers\36694 | |
| 701 | 1 | |a Gubin |b V. E. |c specialist in the field of power engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of technical sciences |f 1976- |g Vladimir Evgenievich |3 (RuTPU)RU\TPU\pers\35120 |9 18395 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа энергетики |b Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова) |3 (RuTPU)RU\TPU\col\23504 |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа химических и биомедицинских технологий (ИШХБМТ) |c (2017- ) |3 (RuTPU)RU\TPU\col\23537 |
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