Influence of Synthesis Conditions on the Crystal, Local Atomic, Electronic Structure, and Catalytic Properties of (Pr1−xYbx)2Zr2O7 (0 ≤ x ≤ 1) Powders | Sciact - CRIS-system of Boreskov Institute of Catalysis

Influence of Synthesis Conditions on the Crystal, Local Atomic, Electronic Structure, and Catalytic Properties of (Pr1−xYbx)2Zr2O7 (0 ≤ x ≤ 1) Powders Full article

Journal

Crystals
, E-ISSN: 2073-4352

Output data

Year: 2023, Volume: 13, Number: 9, Article number : 1405, Pages count : 23 DOI: 10.3390/cryst13091405

Tags

praseodymium/ytterbium zirconates; crystal and local structures; catalytic cracking of propane; synchrotron XRD; X-ray absorption fine structure (XAFS); Raman spectroscopy; FT-IR spectroscopy

Authors

Popov Victor V. ^1,2 , Markova Ekaterina B. ³ , Zubavichus Yan V. ⁴ , Menushenkov Alexey P. ¹ , Yastrebtsev Alexey A. ¹ , Gaynanov Bulat R. ¹ , Chernysheva Olga V. ¹ , Ivanov Andrei A. ¹ , Rudakov Sergey G. ¹ , Berdnikova Maria M. ¹ , Pisarev Alexander A. ¹ , Kulikova Elizaveta S. ² , Kolyshkin Nickolay A. ² , Khramov Evgeny V. ² , Khrustalev Victor N. ³ , Shchetinin Igor V. ⁵ , Tsarenko Nadezhda A. ⁶ , Ognevskaya Natalia V. ⁶ , Seregina Olga N. ⁶

Affiliations

1	Department of Solid State Physics and Nanosystems, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow 115409, Russia
2	Kurchatov Synchrotron Radiation Source, National Research Center Kurchatov Institute, Moscow 123182, Russia
3	Department of Physical and Colloid Chemistry, Faculty of Science, RUDN University, Moscow 117198, Russia
4	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, Koltsovo 630559, Russia
5	Material Science Department, National University of Science and Technology MISiS, Moscow 119049, Russia
6	JSC Design & Survey and Research & Development Institute of Industrial Technology, Moscow 115409, Russia

The influence of Yb3+ cations substitution for Pr3+ on the structure and catalytic activity of (Pr1−xYbx)2Zr2O7 powders synthesized via coprecipitation followed by calcination is studied using a combination of long- (s-XRD), medium- (Raman, FT-IR, and SEM-EDS) and short-range (XAFS) sensitive methods, as well as adsorption and catalytic techniques. It is established that chemical composition and calcination temperature are the two major factors that govern the phase composition, crystallographic, and local-structure parameters of these polycrystalline materials. The crystallographic and local-structure parameters of (Pr1−xYbx)2Zr2O7 samples prepared at 1400 °C/3 h demonstrate a tight correlation with their catalytic activity towards propane cracking. The progressive replacement of Pr3+ with Yb3+ cations gives rise to an increase in the catalytic activity. A mechanism of the catalytic cracking of propane is proposed, which considers the geometrical match between the metal–oxygen (Pr–O, Yb–O, and Zr–O) bond lengths within the active sites and the size of adsorbed propane molecule to be the decisive factor governing the reaction route.

Popov V.V. , Markova E.B. , Zubavichus Y.V. , Menushenkov A.P. , Yastrebtsev A.A. , Gaynanov B.R. , Chernysheva O.V. , Ivanov A.A. , Rudakov S.G. , Berdnikova M.M. , Pisarev A.A. , Kulikova E.S. , Kolyshkin N.A. , Khramov E.V. , Khrustalev V.N. , Shchetinin I.V. , Tsarenko N.A. , Ognevskaya N.V. , Seregina O.N.
Influence of Synthesis Conditions on the Crystal, Local Atomic, Electronic Structure, and Catalytic Properties of (Pr1−xYbx)2Zr2O7 (0 ≤ x ≤ 1) Powders
Crystals. 2023. V.13. N9. 1405 :1-23. DOI: 10.3390/cryst13091405 WOS Scopus AN OpenAlex publication_identifier_short.sciact_skif_identifier_type

Submitted:	Sep 1, 2023
Accepted:	Sep 18, 2023
Published print:	Sep 18, 2023
Published online:	Sep 21, 2023

Web of science:	WOS:001073438100001
Scopus:	2-s2.0-85172776727
Chemical Abstracts:	2023:2062877
OpenAlex:	W4386913356
publication_identifier.sciact_skif_identifier_type:	597

DB	Citing
OpenAlex	2
Web of science	1
Scopus	2