Catalytic Oxidation of CO over LaNi1/3Sb5/3O6 Synthesized by Different Methods-Reference-Cited by-同舟云学术

Catalytic Oxidation of CO over LaNi1/3Sb5/3O6 Synthesized by Different Methods

Published:2023-12-01 Issue:12 Volume:68 Page:1702-1714
ISSN:0044-457X
Container-title:Журнал неорганической химии
language:
Short-container-title:Žurnal neorganičeskoj himii

Author:

Egorysheva A. V.¹,Golodukhina S. V.¹,Plukchi K. R.¹,Liberman E. Yu.²,Ellert O. G.¹,Naumkin A. V.³,Chistyakov A. V.⁴,Kolesnik I. V.⁵,Arapova O. V.⁴

Affiliation:

1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

2. Mendeleev University of Chemical Technology of Russia

3. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences

4. Topchiev Institute of Pertochemical Synthesis, Russian Academy of Sciences

5. Faculty of Materials Science, Moscow State University

Abstract

Methods for the synthesis of LaNi1/3Sb5/3O6 with a rosiaite structure have been developed using citrate method and coprecipitation followed by annealing. The influence of synthesis conditions on the morphology of the samples has been demonstrated. A comparative analysis of the catalytic properties of LaNi1/3Sb5/3O6 synthesized by various methods, in the reaction of CO oxidation has been carried out. The catalyst synthesized by the citrate method demonstrated the greatest efficiency and stability (the temperature of 90% CO conversion was T90 = 336°C). The LaNi1/3Sb5/3O6 surface was studied before and after catalysis by in situ diffuse reflectance IR spectroscopy, X-ray photoelectron spectroscopy, and temperature-programmed O2 desorption. It has been shown that the catalytic oxidation of CO on the LaNi1/3Sb5/3O6 surface proceeds according to the Mars–van Krevelen mechanism and is accompanied by redox Sb3+ ↔ Sb5+ processes. It has been established that no contamination of the sample surface occurs during the catalysis process.

Publisher

The Russian Academy of Sciences

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