najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2016-7-1-234-243najo-985Research ArticlePAPERS, PRESENTED AT THE CONFERENCEPAPERS, PRESENTED AT THE CONFERENCEReactivity in combustion process for expanded graphites: influence of dimensional effectReactivity in combustion process for expanded graphites: influence of dimensional effectLogvinenkoV. A.LogvinenkoV. A.

Novosibirsk 630090

Novosibirsk 630090

val@niic.nsc.ruMakotchenkoV. G.MakotchenkoV. G.

Novosibirsk 630090

Novosibirsk 630090

mwg@niic.nsc.ruFedorovV. E.FedorovV. E.

Novosibirsk 630090

Novosibirsk 630090

fed@niic.nsc.ruNikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State UniversityNikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State UniversityNikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of SciencesNikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences20161408202571Special Issue: Proceedings of the 12th Biennial International Conference “Advanced Carbon Nanostructures” (ACNS’2015)234243Copyright © Logvinenko V.A., Makotchenko V.G., Fedorov V.E., 20252025Logvinenko V.A., Makotchenko V.G., Fedorov V.E.Logvinenko V.A., Makotchenko V.G., Fedorov V.E.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/985

Thermal stability in combustion reaction for natural graphite, graphene and several expanded graphite phases were studied; the kinetic parameters of the oxidation reaction were calculated for two samples. Natural graphite (crystalline particles 200 – 300 µm) has the maximum stability (E1 = 201 ± 2 kJ/mol, lg A1 = 7.1 ± 0.1), while multilayer graphene is the most reactive (E2 = 120 ± 1 kJ mol−1, lg A2 = 4.3 ± 0.10). The different sample grain sizes and their different structures result in different thermal stabilities: both in the reaction zones location (i.e. in the topochemical equation forms), and in the kinetic parameters’ values.

Thermal stability in combustion reaction for natural graphite, graphene and several expanded graphite phases were studied; the kinetic parameters of the oxidation reaction were calculated for two samples. Natural graphite (crystalline particles 200 – 300 µm) has the maximum stability (E1 = 201 ± 2 kJ/mol, lg A1 = 7.1 ± 0.1), while multilayer graphene is the most reactive (E2 = 120 ± 1 kJ mol−1, lg A2 = 4.3 ± 0.10). The different sample grain sizes and their different structures result in different thermal stabilities: both in the reaction zones location (i.e. in the topochemical equation forms), and in the kinetic parameters’ values.

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The authors declare that there are no conflicts of interest present.