Optimised hydrogen production by aqueous phase reforming of glycerol on Pt/Al2O3
Optimised hydrogen production by aqueous phase reforming of glycerol on Pt/Al2O3
Authors (5): N. D. Subramanian, J. Callison, C. R. A. Catlow, P. P. Wells, N. Dimitratos
Themes: Energy
DOI: 10.1016/j.ijhydene.2016.08.081
Citations: 53
Pub type: article-journal
Pub year: 2016

Publisher: Elsevier BV

Issue: 41

License: https://www.elsevier.com/tdm/userlicense/1.0/

Publication date(s): 2016/11 (print)

Pages: 18441-18450

Volume: 41 Issue: 41

Journal: International Journal of Hydrogen Energy

Link: https://api.elsevier.com/content/article/PII:S0360319916324387?httpAccept=text/xml

URL: http://dx.doi.org/10.1016/j.ijhydene.2016.08.081

Aqueous phase reforming of glycerol was studied over a series of γ-Al2O3 supported metal nanoparticle catalysts for hydrogen production in a batch reactor. Of the metals studied, Pt/Al2O3 was found to be the most active catalyst under the conditions tested. A further systematic study on the impact of reaction parameters, including stirring speed, pressure, temperature, and substrate/metal molar ratio, was conducted and the optimum conditions for hydrogen production (and kinetic regime) were determined as 240 °C, 42 bar, 1000 rpm, and substrate/metal molar ratio ≥ 4100 for a 10 wt% glycerol feed. The glycerol conversion and hydrogen yield achieved at these conditions were 18% and 17%, respectively, with negligible CO and CH4 formation. Analysis of the spent catalyst using FTIR provides an indication that the reaction pathway includes glycerol dehydrogenation and dehydration steps in the liquid phase in addition to typical reforming and water gas shift reactions in the gas phase.

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