On-Board COX Free H2 Generation by for Portable Device Applications Using a Catalytic Hollow Fibre Membrane Micro Reactor

摘要

This work discusses the use of asymmetric yttria stabilised zirconia (YSZ) hollow fibres as a membrane micro reactor substrate for COx fre H2 production by ethanol steam reforming (ESR) reaction and the possibility to use them in portable device applications. The attractive physical and chemical properties of the asymmetric YSZ hollow fibres along with their low-cost manufacturing process present them as a key step in the intensification of heterogeneous catalytic gases phase processes which are relevant today such as the ESR reaction [1]. Likewise, the chemical-physical properties of ethanol, liquid at room temperature and atmospheric pressure along with its non-toxicity make it possible to use it as a "storage-molecule" of H2 for on-boarding applications [2]. In addition, the CO2 produced during the reaction is consumed for biomass growth which nearly closes carbon loop. Based upon all this, in this work a new catalytic hollow fiber membrane micro reactor (CHFMMR), which integrates both a catalytic micro-reactor and a Pd/Ag membrane in the same unit has been developed for on-boarding CO_x free H2 generation by ESR reaction [3][4]. As it is shown in Figure 1, the work has been divided in three stages; optimization, intensification and scale up of the process.