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Issue 4, 2012
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Efficient hydrogen production from bio-butanol oxidative steam reforming over bimetallic Co–Ir/ZnO catalysts

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Abstract

This paper reports, for the first time, hydrogen production from oxidative steam reforming of a bio-butanol raw mixture (n-butanol–acetone–ethanol = 6 : 3 : 1, mass ratio). The process was carried out over new bimetallic Co–Ir/ZnO catalysts using air as an oxidant. The behaviour of bimetallic catalysts was compared with that of monometallic ones. Bimetallic catalyst Co–0.3Ir/ZnO (7 wt% Co, 0.3 wt% Ir) showed higher catalytic performance than monometallic samples, giving higher hydrogen concentration in the outlet gas and lower by-product formation. Moreover, the addition of 0.3 wt% Ir to Co–ZnO prevented the formation of carbon deposits and decreased their degree of graphitization. Addition of more iridium (1 wt% Ir) did not improve the catalytic behaviour. Several techniques, such as N2 adsorption, XRD, TPR, HRTEM, TG-DTG, XPS and Raman spectroscopy, were used for characterizing the fresh and used catalysts.

Graphical abstract: Efficient hydrogen production from bio-butanol oxidative steam reforming over bimetallic Co–Ir/ZnO catalysts

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Publication details

The article was received on 31 Oct 2011, accepted on 17 Jan 2012 and first published on 24 Feb 2012


Article type: Paper
DOI: 10.1039/C2GC16369A
Citation: Green Chem., 2012,14, 1035-1043
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    Efficient hydrogen production from bio-butanol oxidative steam reforming over bimetallic Co–Ir/ZnO catalysts

    W. Cai, N. Homs and P. Ramirez de la Piscina, Green Chem., 2012, 14, 1035
    DOI: 10.1039/C2GC16369A

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