This article is cited in 1 paper

Oxidation of boron modified with vanadium pentoxide

V. G. Shevchenko, V. N. Krasil'nikov, D. A. Eselevich, A. V. Konyukova, O. G. Reznitskikh

Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, 620990, Yekaterinburg, Russia

Abstract: The oxidation of amorphous boron powders modified with vanadium pentoxide were studied by thermogravimetry, differential scanning calorimetry, X-ray phase analysis, and electron microscopy. The modification was carried out by mixing powders with vanadium-containing gels: V$_2$O$_5$ $\cdot$ $n$H$_2$O hydrogel and V(OCH$_2$)$_2$ $\cdot$ $n$(HOCH$_2$)$_2$ oleogel. It was found that adding 2 wt.% V$_2$O$_5$ to the amorphous boron powder led to a decrease of 200$^{\circ}$C in the temperature at the onset of its intense oxidation and to a 25% increase in the specific heat release during interaction under heating in air at a rate of 10$^{\circ}$C/min. The reaction of boron with vanadium pentoxide is considered within the framework of a boron thermal process model.

Keywords: boron powders, surface modification, vanadium pentoxide, reactivity.

UDC: 546.32.33.881:546.62:669.094.3

Received: 12.04.2023
Revised: 10.07.2023
Accepted: 23.08.2023

DOI: 10.15372/FGV2023.9344

 English version: Combustion, Explosion and Shock Waves, 2024, 60:5, 617–623

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