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Preparation of a mesoporous ceria–zirconia supported Ni–Fe catalyst for the high temperature water–gas shift reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
50380 46793 2011 4 PDF Available
Title
Preparation of a mesoporous ceria–zirconia supported Ni–Fe catalyst for the high temperature water–gas shift reaction
Abstract

A Ni–Fe/ceria–zirconia catalyst with ordered mesostructure was prepared by the hard-template method employing mesoporous silica (KIT-6) as a template to impart its highly ordered structure to the ceria–zirconia mixed oxide support. Catalytic activities of the Ni–Fe/CeO2–ZrO2 catalyst for the water–gas shift reaction were superior to those of a commercial Fe–Cr-based catalyst. The ordered structure of Ni–Fe/CeO2–ZrO2 catalyst became more stable compared to one prepared without zirconia due to structural stabilization of the mixed oxide by added zirconia in the framework. Alloying of Ni and Fe and enhanced mobility of lattice oxygen in the oxide support may promote its catalytic activity and selectivity for the water–gas shift reaction.

Graphical AbstractMesoporous Ni–Fe/CeO2–ZrO2 as highly active catalyst for the water–gas shift reaction.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► Mesoporous Ni–Fe/CeO2–ZrO2 catalyst exhibited excellent performance for the WGS. ► The ordered structure of Ni–Fe/CeO2–ZrO2 became more stable by zirconia addition. ► Alloying of Ni and Fe was essential to suppress undesirable CO methanation. ► Enhanced mobility of lattice oxygen in the oxide support promoted the WGS activity.

Keywords
Ceria–zirconia; Ni–Fe; Water–gas shift; Hard-template method; Hydrogen production; PEFC
First Page Preview
Preparation of a mesoporous ceria–zirconia supported Ni–Fe catalyst for the high temperature water–gas shift reaction
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 11, 10 June 2011, Pages 976–979
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis