Influence of perovskite catalysts synthesis methods: Application to dry methane reforming

Influence of perovskite catalysts synthesis methods: Application to dry methane reforming

Perovskites refer to ceramic materials with an ABO3 structure. The optimization of synthesis parameters and material composition can enhance the catalytic efficiency in various chemical reactions, such as dry methane reforming. In order to highlight the differences in the catalytic properties, this...

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Bibliographic Details
Published in:International journal of hydrogen energy Vol. 91; pp. 977 - 988
Main Authors: Belgacem, Faicel, Schneider, Raphaël, Portha, Jean-François, Medjahdi, Ghouti, Balan, Lavinia, Parkhomenko, Ksenia, Roger, Anne-Cécile, Falk, Laurent
Format: Journal Article
Language:English
Published: Elsevier Ltd 19-11-2024
Elsevier
Subjects:
Auto-combustion
Catalysis
Catalyst characterization
Chemical Sciences
Citrate
Dry methane reforming
Pechini
Perovskite
Citrate
Perovskite
Auto-combustion
Pechini
Dry methane reforming
Catalyst characterization
Dry Methane Reforming
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Summary:Perovskites refer to ceramic materials with an ABO3 structure. The optimization of synthesis parameters and material composition can enhance the catalytic efficiency in various chemical reactions, such as dry methane reforming. In order to highlight the differences in the catalytic properties, this study aims to compare three synthesis methods (citrate, auto-combustion and Pechini) for a same perovskite formulation namely SrZr0·5Ni0·4Fe0·1O3. The crystal structure and reducibility profile are determined by XRD and TPR experiences respectively. Surface properties and composition are identified by chemisorption tests (allowing the study of basicity and nickel dispersion) and XPS analyses, respectively. Isothermal catalytic experiences from 600 to 750 °C, under atmospheric pressure and for a WHSV of 40L/h.g together with stability tests for 25 h at 750 °C were conducted. The outcomes show the importance of properly choosing the perovskite preparation methods in order to achieve the desired surface, structural and reactivity properties. [Display omitted] •Comparison of synthesis methods for substituted perovskites SrZrO3 with Ni and Fe.•Utilisation of citrate, auto-combustion and Pechini methods.•Dry methane reforming considered as a test reaction.•Effect of the method on surface properties, crystal structure and reactivity.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2024.10.119