Peculiarities in the Formation of Spinels with the Composition Mn-Al = 1:1 in Oxidizing, Inert or Reducing Media | Sciact - CRIS-система Института катализа

Peculiarities in the Formation of Spinels with the Composition Mn-Al = 1:1 in Oxidizing, Inert or Reducing Media Научная публикация

Журнал

Materials Chemistry and Physics
ISSN: 0254-0584 , E-ISSN: 1879-3312

Вых. Данные

Год: 2018, Том: 216, Страницы: 37-41 Страниц : 5 DOI: 10.1016/j.matchemphys.2018.05.034

Ключевые слова

Phase transformation; Spinel; Manganese oxide; Aluminum oxide; In situ XRD

Авторы

Bulavchenko Olga A. ^1,2 , Afonasenko Tatyana N. ³ , Tsyrul'nikov Pavel G. ³ , Cherepanova Svetlana V. ^1,2 , Tsybulya Sergey V. ^1,2

Организации

1	Boreskov Institute of Catalysis SB RAS, Lavrentieva Ave. 5, 630090 Novosibirsk, Russia
2	Novosibirsk State University, Pirogova Str. 2, 630090 Novosibirsk, Russia
3	Institute of Hydrocarbons Processing SB RAS, Neftezavodskaya Str. 54, 644040 Omsk, Russia

Информация о финансировании (1)

Федеральное агентство научных организаций России

0303-2016-0002

The study revealed peculiarities in the formation of mixed oxides with the Mn3-xAlxO4 spinel structure that were obtained from initial simple oxides β-Mn3O4 and γ-Al2O3 by calcination in various media at 600–1200 °C. The phase composition of the samples treated in air, argon or hydrogen was investigated using ex situ and in situ X-ray diffraction. It was shown that the occurrence of phase transformations depends on the treatment conditions and is related to the charge state of manganese cations. A scheme of the structural transformations induced by temperature and medium was proposed. The formation temperature of spinel was found to decreases from 950 to 600 °C when the oxidizing medium is replaced by the reducing one. Mn3-xAlxO4 spinel (x ∼ 1.5) was produced in air at temperatures above 1050 °C or in an inert medium at 800–1200 °C.

Bulavchenko O.A. , Afonasenko T.N. , Tsyrul'nikov P.G. , Cherepanova S.V. , Tsybulya S.V.
Peculiarities in the Formation of Spinels with the Composition Mn-Al = 1:1 in Oxidizing, Inert or Reducing Media
Materials Chemistry and Physics. 2018. V.216. P.37-41. DOI: 10.1016/j.matchemphys.2018.05.034 WOS Scopus РИНЦ CAPlusCA OpenAlex

Опубликована online:	14 мая 2018 г.
Опубликована в печати:	1 сент. 2018 г.

Web of science:	WOS:000441492000006
Scopus:	2-s2.0-85049345977
РИНЦ:	35762159
Chemical Abstracts:	2018:1071302
Chemical Abstracts (print):	169:319736
OpenAlex:	W2804934015

БД	Цитирований
Web of science	2
Scopus	2
РИНЦ	1
OpenAlex	2