Published July 2019 | Version v1
Journal article Metadata-only

Influence of calcination temperature on the catalytic properties of LaCu0.25Co0.75O3 catalysts in NOx reduction

Creators

  • 1. Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR (China)
  • 2. Department of Chemical Engineering, Beijing Institute of Petro-Chemical Technology, Beijing 102617, PR (China)
  • 3. School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang 524048, PR (China)

Description

The present research is designed to analyze the effect of different calcination temperature on the structural property, the redox ability and the catalytic behavior of LaCu0.25Co0.75O3 samples in NO+CO reaction. The appropriate elevation of calcination temperature visibly enhances the catalytic behavior of LaCu0.25Co0.75O3 samples, conforming to the sequence: LaCu0.25Co0.75O3–750 > LaCu0.25Co0.75O3–500 > LaCu0.25Co0.75O3–250 > LaCu0.25Co0.75O3–1000. The greatest catalytic behavior is gathered on LaCu0.25Co0.75O3–750 sample at 350 °C, with 97% N2 selectivity and 100% conversion for reactants. At the same time, LaCu0.25Co0.75O3–750 sample shows the superior continuous catalysis resistance. The ratio of Cu+/(Cu++Cu2+) and Co2+/(Co2++Co3+), the reducing ability and quantity of oxygen deficiencies are regarded as the key points for the enhancement of catalytic behavior. Besides, giving the example of LaCu0.25Co0.75O3–750, all the catalytic steps are provided to deeply explore the catalytic mechanism.

Additional details

Identifiers

DOI
10.1016/j.apsusc.2019.03.263;
PII
S0169433219308943;

Publishing Information

Journal Title
Applied Surface Science
Journal Volume
481
Journal Page Range
p. 1277-1286
ISSN
0169-4332
CODEN
ASUSEE

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
55055388
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CALCINATION; COBALT IONS; COPPER IONS; DESIGN; OXYGEN
Descriptors DEC
CHARGED PARTICLES; CHEMICAL REACTIONS; DECOMPOSITION; ELEMENTS; IONS; NONMETALS; PYROLYSIS; THERMOCHEMICAL PROCESSES

Optional Information

Copyright
Copyright (c) 2019 Published by Elsevier B.V.