Standard

Synthesis of nanocrystalline calcium aluminate C12A7 under carbon nanoreactor conditions. / Volodin, Alexander M.; Zaikovskii, Vladimir I.; Kenzhin, Roman M. и др.

в: Materials Letters, Том 189, 15.02.2017, стр. 210-212.

Результаты исследований: Научные публикации в периодических изданияхстатьяРецензирование

Harvard

Volodin, AM, Zaikovskii, VI, Kenzhin, RM, Bedilo, AF, Mishakov, IV & Vedyagin, AA 2017, 'Synthesis of nanocrystalline calcium aluminate C12A7 under carbon nanoreactor conditions', Materials Letters, Том. 189, стр. 210-212. https://doi.org/10.1016/j.matlet.2016.11.112

APA

Volodin, A. M., Zaikovskii, V. I., Kenzhin, R. M., Bedilo, A. F., Mishakov, I. V., & Vedyagin, A. A. (2017). Synthesis of nanocrystalline calcium aluminate C12A7 under carbon nanoreactor conditions. Materials Letters, 189, 210-212. https://doi.org/10.1016/j.matlet.2016.11.112

Vancouver

Volodin AM, Zaikovskii VI, Kenzhin RM, Bedilo AF, Mishakov IV, Vedyagin AA. Synthesis of nanocrystalline calcium aluminate C12A7 under carbon nanoreactor conditions. Materials Letters. 2017 февр. 15;189:210-212. doi: 10.1016/j.matlet.2016.11.112

Author

Volodin, Alexander M. ; Zaikovskii, Vladimir I. ; Kenzhin, Roman M. и др. / Synthesis of nanocrystalline calcium aluminate C12A7 under carbon nanoreactor conditions. в: Materials Letters. 2017 ; Том 189. стр. 210-212.

BibTeX

@article{cad077a9d6554bdbbcbdf4d61fc32553,
title = "Synthesis of nanocrystalline calcium aluminate C12A7 under carbon nanoreactor conditions",
abstract = "Recently we have shown that carbon coating supported on the surface of oxide nanoparticles is able to stabilize their size and prevent sintering at high temperatures. The carbon shell can play the role of a nanoreactor where phase or chemical transformations of nanoparticles take place. In the present study the carbon nanoreactor approach was used to study the C12A7:eˉ electride synthesis in the argon atmosphere. For these systems the appearance of free electrons registered by electron paramagnetic resonance (EPR) was observed at moderate temperatures (starting from 1250 °C). In the presence of the carbon shell the material maintains relatively high dispersity even at 1450 °C, which exceeds the melting temperature for C12A7. The possibility of increasing substitution of oxygen anions with electrons in C12A7@C systems was examined by increasing calcination temperature from 1200 up to 1450 °C. Highly sensitive EPR method for qualitative and quantitative characterization of these systems was proposed. It was shown that in absence of the carbon coating conduction electrons appear only at temperatures close to the melting point (above 1360–1380 °C). The electride formation inside the carbon shell occurs due to carbothermal reduction of C12A7 nanoparticles encapsulated inside the shell.",
keywords = "C12A7, Carbon Nanoreactor, Ceramic composites, Electride, EPR, Nanocomposites, OXIDATION, AMMONIA-SYNTHESIS, MECHANISM, STABLE ELECTRIDE, 12CAO-CENTER-DOT-7AL(2)O(3) ELECTRIDE, CATALYST",
author = "Volodin, {Alexander M.} and Zaikovskii, {Vladimir I.} and Kenzhin, {Roman M.} and Bedilo, {Alexander F.} and Mishakov, {Ilya V.} and Vedyagin, {Aleksey A.}",
year = "2017",
month = feb,
day = "15",
doi = "10.1016/j.matlet.2016.11.112",
language = "English",
volume = "189",
pages = "210--212",
journal = "Materials Letters",
issn = "0167-577X",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Synthesis of nanocrystalline calcium aluminate C12A7 under carbon nanoreactor conditions

AU - Volodin, Alexander M.

AU - Zaikovskii, Vladimir I.

AU - Kenzhin, Roman M.

AU - Bedilo, Alexander F.

AU - Mishakov, Ilya V.

AU - Vedyagin, Aleksey A.

PY - 2017/2/15

Y1 - 2017/2/15

N2 - Recently we have shown that carbon coating supported on the surface of oxide nanoparticles is able to stabilize their size and prevent sintering at high temperatures. The carbon shell can play the role of a nanoreactor where phase or chemical transformations of nanoparticles take place. In the present study the carbon nanoreactor approach was used to study the C12A7:eˉ electride synthesis in the argon atmosphere. For these systems the appearance of free electrons registered by electron paramagnetic resonance (EPR) was observed at moderate temperatures (starting from 1250 °C). In the presence of the carbon shell the material maintains relatively high dispersity even at 1450 °C, which exceeds the melting temperature for C12A7. The possibility of increasing substitution of oxygen anions with electrons in C12A7@C systems was examined by increasing calcination temperature from 1200 up to 1450 °C. Highly sensitive EPR method for qualitative and quantitative characterization of these systems was proposed. It was shown that in absence of the carbon coating conduction electrons appear only at temperatures close to the melting point (above 1360–1380 °C). The electride formation inside the carbon shell occurs due to carbothermal reduction of C12A7 nanoparticles encapsulated inside the shell.

AB - Recently we have shown that carbon coating supported on the surface of oxide nanoparticles is able to stabilize their size and prevent sintering at high temperatures. The carbon shell can play the role of a nanoreactor where phase or chemical transformations of nanoparticles take place. In the present study the carbon nanoreactor approach was used to study the C12A7:eˉ electride synthesis in the argon atmosphere. For these systems the appearance of free electrons registered by electron paramagnetic resonance (EPR) was observed at moderate temperatures (starting from 1250 °C). In the presence of the carbon shell the material maintains relatively high dispersity even at 1450 °C, which exceeds the melting temperature for C12A7. The possibility of increasing substitution of oxygen anions with electrons in C12A7@C systems was examined by increasing calcination temperature from 1200 up to 1450 °C. Highly sensitive EPR method for qualitative and quantitative characterization of these systems was proposed. It was shown that in absence of the carbon coating conduction electrons appear only at temperatures close to the melting point (above 1360–1380 °C). The electride formation inside the carbon shell occurs due to carbothermal reduction of C12A7 nanoparticles encapsulated inside the shell.

KW - C12A7

KW - Carbon Nanoreactor

KW - Ceramic composites

KW - Electride

KW - EPR

KW - Nanocomposites

KW - OXIDATION

KW - AMMONIA-SYNTHESIS

KW - MECHANISM

KW - STABLE ELECTRIDE

KW - 12CAO-CENTER-DOT-7AL(2)O(3) ELECTRIDE

KW - CATALYST

UR - http://www.scopus.com/inward/record.url?scp=85006375550&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2016.11.112

DO - 10.1016/j.matlet.2016.11.112

M3 - Article

AN - SCOPUS:85006375550

VL - 189

SP - 210

EP - 212

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

ER -

ID: 10317574