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Effect of MgO addition on the basicity of Ni/ZrO2 and on its catalytic activity in carbon dioxide reforming of methane

Paper ID Volume ID Publish Year Pages File Format Full-Text
51176 46834 2009 7 PDF Available
Title
Effect of MgO addition on the basicity of Ni/ZrO2 and on its catalytic activity in carbon dioxide reforming of methane
Abstract

The effect of the MgO content on the basicity and on the catalytic performance of Ni/ZrO2–MgO catalysts for carbon dioxide reforming of methane was studied. MgO addition to the zirconia support by co-precipitation (5% MgO) had several effects: stabilized the zirconia tetragonal phase by increasing its thermal stability, increased the basicity of the support, and decreased the reducibility of Ni2+. The CO2 desorption energy distribution functions calculated from the TPD-CO2 profiles were centred at activation energies around 100–134 kJ mol−1. Besides the effect due to the modification of the zirconia properties by MgO addition, the catalytic activity was also related to the reduction degree of nickel on Ni/ZrO2–MgO catalysts, while the catalyst stability was related to the basic properties of the supports.

Keywords
Methane reforming; Magnesia-stabilized zirconia; Ni/ZrO2 catalyst; Activation energy of CO2 desorption
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Effect of MgO addition on the basicity of Ni/ZrO2 and on its catalytic activity in carbon dioxide reforming of methane
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 4, 15 December 2009, Pages 240–246
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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