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Renewable hydrogen production from oxidative steam reforming of bio-butanol over CoIr/CeZrO2 catalysts: Relationship between catalytic behaviour and catalyst structure

Paper ID Volume ID Publish Year Pages File Format Full-Text
45908 46427 2014 10 PDF Available
Title
Renewable hydrogen production from oxidative steam reforming of bio-butanol over CoIr/CeZrO2 catalysts: Relationship between catalytic behaviour and catalyst structure
Abstract

•Bio-butanol as a source for renewable hydrogen from catalytic oxidative steam reforming.•Relationship between catalytic behaviour and structure in CoIr/CeZrO2 systems.•High stability of CoIr-based catalysts for bio-butanol oxidative steam reforming.•Influence of structure and surface basicity on catalytic performance of CoIr/CeZrO2.

Several bimetallic CoIr/Ce0.82Zr0.18O2 catalysts with supports of different characteristics were studied in the oxidative steam reforming of a bio-butanol raw mixture (n-butanol/acetone/ethanol = 6/3/1, mass ratio). Ce0.82Zr0.18O2 supports were prepared by precipitation and then calcination at different temperatures (500 °C, 700 °C and 900 °C). The calcination temperature of the support determined certain characteristics of the final catalyst, namely: BET surface area, crystallite size, basicity, reduction properties and oxygen storage capacity (OSC). All of these factors were found to affect the performance of the catalysts in terms of: raw mixture conversion, hydrogen selectivity and resistance to deactivation upon long-term testing. Several techniques such as XRD, TPR, CO2 TPD, CO2 adsorption calorimetry, Raman, DRIFT, TEM, XPS and OSC were used to characterize the catalysts. Characterization of samples before and after catalytic tests allowed us to determine the influence of the catalyst characteristics on the deactivation process.

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Keywords
Bio-butanol; Oxy-steam reforming; Structure sensitivity; Renewable hydrogen; CeO2–ZrO2
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Renewable hydrogen production from oxidative steam reforming of bio-butanol over CoIr/CeZrO2 catalysts: Relationship between catalytic behaviour and catalyst structure
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 150–151, 5 May 2014, Pages 47–56
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
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