Kinetika reakce grafitu a koksu s NO a O2

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F05%3A00000017" target="_blank" >RIV/61988987:17310/05:00000017 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Kinetic studies of graphon and coal char reaction with NO and O2: Direct non-linear regression from TG curves.

Popis výsledku v původním jazyce

The reactions of carbonaceous materials (graphon and coal-char) with NO, O2 and NO+O2 were investigated by a thermogravimetric analysis (TGA). A method of direct non-linear regression of the kinetic equation was applied for a simultaneous calculation ofthe apparent activation energy, frequency factor and reaction order from a single TG curve of carbon gasification in various atmospheres. It was proven that the proposed calculation method is applicable for the calculation of kinetic parameters from overlapping processes. Calculations from TG curves of the above reactions demonstrate that NO-carbon and (NO+O2)-carbon reactions contain two processes, while O2-carbon is a single process. The reaction order of O2-carbon is approximate 0.5, while the reaction orders of NO-carbon or (NO+O2)-carbon reaction are dependent on the process and type of carbon. Graphon shows higher apparent activation energy than coal-char due to the pore structure and uncatalysed effects.

Název v anglickém jazyce

Kinetic studies of graphon and coal char reaction with NO and O2: Direct non-linear regression from TG curves.

Popis výsledku anglicky

The reactions of carbonaceous materials (graphon and coal-char) with NO, O2 and NO+O2 were investigated by a thermogravimetric analysis (TGA). A method of direct non-linear regression of the kinetic equation was applied for a simultaneous calculation ofthe apparent activation energy, frequency factor and reaction order from a single TG curve of carbon gasification in various atmospheres. It was proven that the proposed calculation method is applicable for the calculation of kinetic parameters from overlapping processes. Calculations from TG curves of the above reactions demonstrate that NO-carbon and (NO+O2)-carbon reactions contain two processes, while O2-carbon is a single process. The reaction order of O2-carbon is approximate 0.5, while the reaction orders of NO-carbon or (NO+O2)-carbon reaction are dependent on the process and type of carbon. Graphon shows higher apparent activation energy than coal-char due to the pore structure and uncatalysed effects.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GA105%2F03%2F0538" target="_blank" >GA105/03/0538: Počáteční stádium samovzněcování uhlí a možnosti jeho ovlivnění</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2005

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Fuel Processing Technology

ISSN

0378-3820

e-ISSN

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Svazek periodika

86

Číslo periodika v rámci svazku

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Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

651

Kód UT WoS článku

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EID výsledku v databázi Scopus

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