Volume 42, Issue 11 pp. 2443-2449
Research Article

Catalytic Oxidation of CO over Nanocrystalline La1–xCexNiO3 Perovskite-Type Oxides

Sajjad Amini

Sajjad Amini

University of Kashan, Chemical Engineering Department, Catalyst and Advanced Materials Research Laboratory, Kashan, Iran

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Fereshteh Meshkani

Corresponding Author

Fereshteh Meshkani

University of Kashan, Chemical Engineering Department, Catalyst and Advanced Materials Research Laboratory, Kashan, Iran

Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, Iran

Correspondence: Fereshteh Meshkani ([email protected]), University of Kashan, Chemical Engineering Department, Catalyst and Advanced Materials Research Laboratory, Kashan, Iran.Search for more papers by this author
Mehran Rezaei

Mehran Rezaei

Iran University of Science and Technology (IUST), School of Chemical, Petroleum and Gas Engineering, Tehran, Iran

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First published: 16 August 2019
Citations: 8

Abstract

Nanocrystalline La1–xCexNiO3 (x = 0.1, 0.3, 0.5, 0.7, 0.9) perovskite-type oxide catalysts prepared by the Pechini method were employed in catalytic CO oxidation and the effect of substitution of La by Ce on CO conversion was evaluated. The results indicated the remarkable effect of La substitution with Ce on the catalytic performance at low temperatures. The reaction temperature had a significant influence on the stability of the catalysts. The La0.1Ce0.9NiO3 sample exhibited the highest activity among the prepared catalysts in CO oxidation reaction. In addition, the influence of different parameters including pretreatment condition, feed ratio, and gas hourly space velocity (GHSV) on the catalytic performance was examined. The optimum catalyst proved high stability under severe reaction conditions in the presence of water vapor and CO2 in the feed stream.

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