Ni-BZCYYb HYDROGEN SEPARATION MEMBRANE FOR THE INTEGRATION OF HYDROGEN PRODUCTION AND HYDROGEN SEPARATION BY ETHANOL REFORMING

Abstract

The integration of hydrogen production and hydrogen separation is achieved in this study by combining the membrane technology for hydrogen separation with the biomass ethanol reforming hydrogen production. At various temperatures, the impact of the surface exchange on the hydrogen permeability was investigated, and a Pd-GDC catalyst helped to overcome the surface exchanges bottlenecks. When the Pd-GDC catalyst was added, the hydrogen permeation fluxes of the Ni-BZCYYb hydrogen separation membrane made by a mesh-assisted phase-inversion process can achieve 0.730 ml cm-2 min-1 at 850 °C and can be stably maintained for 100 hours. The ethanol conversion rate can be increased to 70% with the addition of an Ru-GDC fibre catalyst into the channel′s feeding side and building a micro reformer for efficient ethanol water reforming. Additionally, the hydrogen permeation fluxes can increase to 0.717 ml cm-2 min-1 and can be stably maintained for 100 hours. This study shows how to produce and separate pure hydrogen energy from renewable ethanol in an effective manner.