The Crystal Structure of Compositionally Homogeneous Mixed Ceria-Zirconia Oxides by High Resolution X-Ray and Neutron Diffraction Methods | Sciact - CRIS-система Института катализа

The Crystal Structure of Compositionally Homogeneous Mixed Ceria-Zirconia Oxides by High Resolution X-Ray and Neutron Diffraction Methods Научная публикация

Журнал

Open Chemistry
ISSN: 2391-5420

Вых. Данные

Год: 2017, Том: 15, Номер: 1, Страницы: 438-445 Страниц : 8 DOI: 10.1515/chem-2017-0044

Ключевые слова

mixed ceria-zirconia oxides; neutron and X-ray diffraction studies; real/atomic structure; disordering

Авторы

Shmakov Alexander N. ^1,2 , Cherepanova Svetlana V. ^1,2 , Zyuzin Dmitrii A. ¹ , Fedorova Yulia E. ¹ , Bobrikov Ivan A. ³ , Roger Anne-Cecile ⁴ , Adamski Andrzej ⁵ , Sadykov Vladislav A. ^1,2

Организации

1	Boreskov Institute of Catalysis, Novosibirsk, 630090, Russia
2	Novosibirsk State University, Novosibirsk, 630090, Russia
3	Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Moscow region, 141980, Russia
4	University of Strasbourg, Strasbourg, F-67087, France
5	Jagiellonian University, Krakow, Poland

Информация о финансировании (2)

1	Министерство образования и науки Российской Федерации	14.616.21.0036
2	European Commission	ERA.Net RUS Plus - NICE

The real/atomic structure of single phase homogeneous nanocrystalline Ce0.5Zr0.5O2 +/- delta oxides prepared by a modified Pechini route and Ni-loaded catalysts of methane dry reforming on their bases was studied by a combination of neutron diffraction, synchrotron X-ray diffraction, total X-ray scattering and X-ray absorption spectroscopy. The effects of sintering temperature and pretreatment in H-2 were elucidated. The structure of the mixed oxides corresponds to a tetragonal space group indicating a homogeneous distribution of Ce and Zr cations in the lattice. A pronounced disordering of the oxygen sublattice was revealed by neutron diffraction, supposedly due to incorporation of water into the structure when in contact with air promoted by the generation of anion vacancies in the lattice after reduction or calcination at high temperatures. However, such disordering has not resulted in any occupation of the oxygen interstitial positions in the bulk of the nanodomains.

Shmakov A.N. , Cherepanova S.V. , Zyuzin D.A. , Fedorova Y.E. , Bobrikov I.A. , Roger A-C. , Adamski A. , Sadykov V.A.
The Crystal Structure of Compositionally Homogeneous Mixed Ceria-Zirconia Oxides by High Resolution X-Ray and Neutron Diffraction Methods

Open Chemistry. 2017. V.15. N1. P.438-445. DOI: 10.1515/chem-2017-0044 WOS Scopus РИНЦ CAPlus OpenAlex

Полный текст от издателя

Опубликована в печати:	1 янв. 2017 г.
Поступила в редакцию:	10 авг. 2017 г.
Принята к публикации:	22 нояб. 2017 г.
Опубликована online:	29 дек. 2017 г.

Web of science:	WOS:000424997500013
Scopus:	2-s2.0-85052018433
РИНЦ:	35748448
Chemical Abstracts:	2019:681311
OpenAlex:	W2794434746

БД	Цитирований
Web of science	8
Scopus	8
РИНЦ	7
OpenAlex	7