The Structure of Mixed Mn–Co Oxide Catalysts for CO Oxidation | Sciact - CRIS-система Института катализа

The Structure of Mixed Mn–Co Oxide Catalysts for CO Oxidation Научная публикация

Конференция

XI International Conference Mechanisms of Catalytic Reactions
07-11 окт. 2019 , Сочи

Журнал

Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028

Вых. Данные

Год: 2020, Том: 63, Номер: 1-2, Страницы: 75-85 Страниц : 11 DOI: 10.1007/s11244-020-01230-1

Ключевые слова

CO oxidation; Co oxide; Heterogeneous catalysts; Mn oxide; Mn–Co mixed oxides; Solid solution

Авторы

Bulavchenko O.A. ^1,2 , Afonasenko T.N. ³ , Sigaeva S.S. ³ , Ivanchikova A.V. ^1,2 , Saraev A.A. ^1,2 , Gerasimov E.Yu. ^1,2 , Kaichev V.V. ^1,2 , Tsybulya S.V. ^1,2

Организации

1	Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave., 5, Novosibirsk, Russia 630090
2	Novosibirsk State University, Pirogova Str., 2, Novosibirsk, Russia 630090
3	Center of New Chemical Technologies BIC, Neftezavodskaya, 54, Omsk, Russia 644040

Информация о финансировании (2)

1	Федеральное агентство научных организаций России	0303-2016-0002
2	Российский фонд фундаментальных исследований	18-33-00542 (АААА-А18-118042890005-8)

A series of Mn5Co1Ox catalysts calcined at different temperatures in the range of 400–800 °C were synthesized by coprecipitation of manganese and cobalt nitrates and tested in the oxidation of CO. The specific surface area, structure, and chemistry of the catalysts were studied. In addition, the reduction of the catalysts by hydrogen was studied using in situ X-ray diffraction and temperature-programmed reduction techniques. It was found that the low-temperature catalyst calcined at 400 °C displays the best catalytic activity, which is attributed to its high surface area, low-temperature reducibility, and a high surface content of Mn4+. The formation of highly disperse and active CoMnO3 species and excess oxygen in a Mn3−xCoxO4+δ spinel leads to excellent low-temperature redox properties. The elevated temperature calcination results in a decline in the catalytic activity in CO oxidation due to formation of a well crystalline Mn3−xCoxO4 spinel, a decrease in the surface area and reducibility.

Bulavchenko O.A. , Afonasenko T.N. , Sigaeva S.S. , Ivanchikova A.V. , Saraev A.A. , Gerasimov E.Y. , Kaichev V.V. , Tsybulya S.V.
The Structure of Mixed Mn–Co Oxide Catalysts for CO Oxidation
Topics in Catalysis. 2020. V.63. N1-2. P.75-85. DOI: 10.1007/s11244-020-01230-1 WOS Scopus РИНЦ CAPlus OpenAlex

Опубликована online:	8 февр. 2020 г.
Опубликована в печати:	1 мар. 2020 г.

Web of science:	WOS:000516161400001
Scopus:	2-s2.0-85079234205
РИНЦ:	43239195
Chemical Abstracts:	2020:296882
OpenAlex:	W3004589430

БД	Цитирований
Scopus	12
Web of science	12
РИНЦ	9
OpenAlex	12