| 000 | 03408nlm1a2200445 4500 | ||
|---|---|---|---|
| 001 | 660574 | ||
| 005 | 20231030041715.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\30098 | ||
| 090 | _a660574 | ||
| 100 | _a20190805a2019 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aUS | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aNon-isothermal oxidation of coal with Ce(NO3)3 and Cu(NO3)2 additives _fK. B. Larionov, A. A. Gromov |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References: 55 tit.] | ||
| 330 | _aNon-isothermal oxidation of brown coal with 5 wt% of Cu(NO3)2, 5 wt% of Ce(NO3)3 and {2.5 wt% Cu(NO3)2?+?2.5 wt% Ce(NO3)3} additives was studied. The introduction of additives was carried out by an incipient wet impregnation method to ensure uniform distribution of cerium and copper nitrates within the structure of coal powdery samples (according to SEM and EDX mapping). The samples reactivity was studied in an isothermal oxidation regime at 200 °C (1 h) and by DSC/TGA at 2.5 °C/min heating rate. The additives implementation was found to reduce significantly the oxidation onset temperature (?Ti?=?20–55 °C), the samples oxidation delay time (?ti?=?2–22 min) and overall duration of the oxidation process (?tc?=?8–16 min). The additives efficiency could be graded in accordance with the activation on the coal oxidation in the following row: Cu(NO3)2?>?{Cu(NO3)2?+?Ce(NO3)3}?>?Ce(NO3)3. According to the mass spectroscopy, the obtained row of activation correlates well with the initial temperature of the studied nitrate’s decomposition (from 190 to 223 °C). A presence of nitrates was found to change significantly the trend of heat release taking place during the oxidation of coal samples (according to DSC/TGA data). The influence of coal morphology and volatiles content in initial sample on the parameters of the oxidation process was studied as well. Activation energy (Ea) of the coal oxidation was calculated using Coats–Redfern method. Maximum decrease in Ea from 69 to 58 kJ/mol was observed for the samples with Cu(NO3)2. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tInternational Journal of Coal Science and Technology | ||
| 463 |
_tVol. 6, iss. 1 _v[P. 37-50] _d2019 |
||
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _acoal oxidation | |
| 610 | 1 | _areactivity | |
| 610 | 1 | _aDSC/DTG/TGA/MS | |
| 610 | 1 | _acopper nitrate | |
| 610 | 1 | _acerium nitrate | |
| 610 | 1 | _aуголь | |
| 610 | 1 | _aокисление | |
| 610 | 1 | _aреактивность | |
| 610 | 1 | _aнитраты | |
| 700 | 1 |
_aLarionov _bK. B. _cspecialist in the field of power engineering _ctechnician of Tomsk Polytechnic University _f1990- _gKirill Borisovich _2stltpush _3(RuTPU)RU\TPU\pers\35705 |
|
| 701 | 1 |
_aGromov _bA. A. |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИнженерная школа энергетики _bНаучно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова) _h8025 _2stltpush _3(RuTPU)RU\TPU\col\23504 |
| 801 | 2 |
_aRU _b63413507 _c20190805 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1007/s40789-018-0229-y | |
| 942 | _cCF | ||