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Nickel catalysts promoted with cerium and lanthanum to reduce carbon formation in partial oxidation of methane reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
43366 45966 2007 6 PDF Available
Title
Nickel catalysts promoted with cerium and lanthanum to reduce carbon formation in partial oxidation of methane reactions
Abstract

Mixed oxides of nickel, magnesium and aluminum were prepared by precursors hydrotalcite type and were substituted by lanthanum or cerium using the method of anion exchange. The catalysts were characterized by X-Ray Photoelectronic Spectroscopy (XPS); Energy Dispersive X-Ray Spectroscopy (EDS); Surface Area Method BET; X-Ray Diffraction (XRD); Temperature Programmed Reduction (TPR) and Catalytic Tests. Analysis of the mixed oxides suggests that the hydrotalcite type precursor after thermal treatment lead a good dispersion of nickel forming the periclase (Ni, Mg)O replaced by cations of Al3+ and spinel structure (Ni,Mg)Al2O4. The catalysts were tested in the partial oxidation of methane and the results showed that the catalysts promoted with lanthanum and cerium led to a reduction in the velocity of the carbon formation.

Graphical abstractMixed oxides of nickel, magnesium and aluminum prepared by precursors hydrotalcite type were substituted by lanthanum or cerium and were characterized by XPS; EDS; BET; XRD; TPR. The catalysts were tested in the POM and the results showed that the catalysts promoted led to a reduction in the velocity of the carbon formation. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Catalysts; Nickel; Hydrotalcite; Cerium; Lanthanum
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Nickel catalysts promoted with cerium and lanthanum to reduce carbon formation in partial oxidation of methane reactions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 333, Issue 1, 3 December 2007, Pages 90–95
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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