The Crystal Structure of Compositionally Homogeneous Mixed Ceria-Zirconia Oxides by High Resolution X-Ray and Neutron Diffraction Methods | Sciact - CRIS-system of Boreskov Institute of Catalysis

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

Journal

Open Chemistry
ISSN: 2391-5420

Output data

Year: 2017, Volume: 15, Number: 1, Pages: 438-445 Pages count : 8 DOI: 10.1515/chem-2017-0044

Tags

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

Authors

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

Affiliations

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

Funding (2)

1	The Ministry of Education and Science of the Russian Federation	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 AN OpenAlex

Full text from publisher

Published print:	Jan 1, 2017
Submitted:	Aug 10, 2017
Accepted:	Nov 22, 2017
Published online:	Dec 29, 2017

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

DB	Citing
Web of science	8
Scopus	8
Elibrary	7
OpenAlex	7