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Sol–gel synthesis and characterization of silica supported nickel ferrite catalysts for dry reforming of methane

Paper ID Volume ID Publish Year Pages File Format Full-Text
49917 46773 2015 5 PDF Available
Title
Sol–gel synthesis and characterization of silica supported nickel ferrite catalysts for dry reforming of methane
Abstract

•Sol–gel method using TMOS is used for nickel ferrite–SiO2 nano-particles synthesis.•Supported catalysts exhibit a higher acidity compared to unsupported NF.•The surface acidity limits the relative contribution of RWGS reaction.•Silica supported catalysts are more selective for DRM compared to unsupported NF.

Silica-supported NiFe2O4 spinel was prepared by sol–gel method using tetramethyl orthosilicate as a precursor of silica. B.E.T., XRD, MEB–EDS, TEM, XPS and Raman scattering techniques were used for its characterization. The reducibility by hydrogen was investigated by TPR and HT-XRD. These properties are compared to those of unsupported NiFe2O4. Both acidic and redox sites were found by studying the decomposition of isopropanol. First experiments in the dry reforming of methane by CO2 showed that owing to more acidic properties supporting NiFe2O4 on silica provides a more active and selective catalyst that seems less prone to coking.

Keywords
NiFe2O4; Sol–gel method; Isopropanol decomposition; Dry reforming of methane
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Sol–gel synthesis and characterization of silica supported nickel ferrite catalysts for dry reforming of methane
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 58, 5 January 2015, Pages 127–131
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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