TY - JOUR

T1 - From bioethanol exploitation to high grade hydrogen generation

T2 - Steam reforming promoted by a Co-Pt catalyst in a Pd-based membrane reactor

AU - Iulianelli, A.

AU - Palma, V.

AU - Bagnato, G.

AU - Ruocco, C.

AU - Huang, Y.

AU - Veziroğlu, N.T.

AU - Basile, A.

PY - 2018/4/30

Y1 - 2018/4/30

N2 - There is a general agreement about the consideration that the fossil fuels are a limited resource and the emission of carbon dioxide and other harmful products are the main cause of the global warming and climate change. The interest for decreasing the fossil fuels dependence and reducing the greenhouse gases emissions represents a top priority. The biomass is a renewable resource useful for biodiesel and bioethanol production. The latter, most plentiful, is currently considered as green ethanol produced from biomass by biological processes. Meanwhile, membrane reactors represent an innovative and intensified technology for the production and the simultaneous recovery of high-grade hydrogen in only one stage. Here, we describe an efficient medium-temperature (T = 400 °C) bioethanol steam reforming process in a thin (∼5 μm of metallic layer) supported Pd-based membrane reactor packed with a not commercial Co(10%)Pt (3%)/CeO2-ZrO2-Al2O3 bi-metallic catalyst at space velocity between 1900 h−1 and 4800 h−1 and reaction pressure between 1.5 and 2.0 bar. A real bioethanol mixture coming from industry is supplied to the membrane reactor for producing high grade hydrogen, reaching 60% of ethanol conversion (versus ∼ 40% of the equivalent conventional reactor) at 400 °C, 2.0 bar and 1900 h−1, meanwhile recovering almost 70% of the hydrogen produced during the bioethanol steam reforming reaction with a purity higher than 99%. This would make the delivery of hydrogen for PEM fuel cells supplying – and hence the use of green bioethanol as a practical hydrogen carrier – feasible.

AB - There is a general agreement about the consideration that the fossil fuels are a limited resource and the emission of carbon dioxide and other harmful products are the main cause of the global warming and climate change. The interest for decreasing the fossil fuels dependence and reducing the greenhouse gases emissions represents a top priority. The biomass is a renewable resource useful for biodiesel and bioethanol production. The latter, most plentiful, is currently considered as green ethanol produced from biomass by biological processes. Meanwhile, membrane reactors represent an innovative and intensified technology for the production and the simultaneous recovery of high-grade hydrogen in only one stage. Here, we describe an efficient medium-temperature (T = 400 °C) bioethanol steam reforming process in a thin (∼5 μm of metallic layer) supported Pd-based membrane reactor packed with a not commercial Co(10%)Pt (3%)/CeO2-ZrO2-Al2O3 bi-metallic catalyst at space velocity between 1900 h−1 and 4800 h−1 and reaction pressure between 1.5 and 2.0 bar. A real bioethanol mixture coming from industry is supplied to the membrane reactor for producing high grade hydrogen, reaching 60% of ethanol conversion (versus ∼ 40% of the equivalent conventional reactor) at 400 °C, 2.0 bar and 1900 h−1, meanwhile recovering almost 70% of the hydrogen produced during the bioethanol steam reforming reaction with a purity higher than 99%. This would make the delivery of hydrogen for PEM fuel cells supplying – and hence the use of green bioethanol as a practical hydrogen carrier – feasible.

KW - Bioethanol

KW - Hydrogen

KW - Pd-based membrane reactor

KW - Steam reforming

U2 - 10.1016/j.renene.2017.10.050

DO - 10.1016/j.renene.2017.10.050

M3 - Journal article

VL - 119

SP - 834

EP - 843

JO - Renewable Energy

JF - Renewable Energy

SN - 0960-1481

ER -