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Ni-Co alloy catalyst from LaNi1−xCoxO3 perovskite supported on zirconia for steam reforming of ethanol

Paper ID Volume ID Publish Year Pages File Format Full-Text
45082 46396 2016 11 PDF Available
Title
Ni-Co alloy catalyst from LaNi1−xCoxO3 perovskite supported on zirconia for steam reforming of ethanol
Abstract

•Ni–Co/La2O3-ZrO2 catalyst was obtained.•The Ni-Co alloy catalyst exhibited very good catalytic performance for SRE.•La2O3 modified the support and had some positive effects for eliminating coke.

The critical problem facing catalysts for the steam reforming of ethanol (SRE) is deactivation due to carbon deposition and/or sintering of the active components. To overcome this problem, a new scheme for designing and preparing Ni-Co alloy catalysts for SRE has been developed in this study using a perovskite-type oxide of LaNi1−xCoxO3 as the precursor. According to the scheme, a series of zirconia-supported LaNi1−xCoxO3 catalysts were prepared by impregnating ZrO2 with a mixed solution composed of ions consisting of nickel, cobalt, lanthanum and citric acid. After reduction, the Ni-Co alloy nanoparticles were highly dispersed on ZrO2 and modified with La2O3. The bimetallic catalyst exhibited very good catalytic performance for SRE, including high activity, high selectivity to hydrogen and very good stability due to the synergistic catalysis of cobalt and nickel. The synergy between cobalt and nickel led to a higher anti-coking ability compared to the corresponding monometal catalysts, and the bimetallic catalyst exhibited very good anti-sintering ability. This preparation scheme could be extended to the preparation of many other supported bimetallic catalysts because many transitional metal ions can act as the ions of a perovskite-type oxide.

Graphical abstractStructure evolution of LaNi0.7Co0.3O3/ZrO2 catalyst before and after reduction.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Ni-Co bimetal; Ethanol steam reforming; Carbon deposition; Nano alloy; Sintering
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Ni-Co alloy catalyst from LaNi1−xCoxO3 perovskite supported on zirconia for steam reforming of ethanol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 187, 15 June 2016, Pages 19–29
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us