Abstract
Sodium borohydride (NaBH4) is considered to be a secure metal hydride for hydrogen storage and supply. In this study, the two-phase pressure drop in the dehydrogenation of aqueous NaBH4solution in a microchannel with a hydraulic diameter of 300 μm is investigated for the purpose of designing a dehydrogenation chemical reactor. Because hydrogen gas was generated by the hydrolysis of NaBH4in the presence of a ruthenium catalyst, two different phases of flow (aqueous NaBH4solution and hydrogen gas) exist in the microchannel reactor. For experimental studies, a microchannel was fabricated on a silicon wafer substrate with a 100 nm ruthenium catalyst deposited on three sides of the channel surface. Based on the experimental result, it is found that the two-phase multiplier linearly increases with the void fraction, which depends on the initial NaBH4concentration, the NaBH4reaction rate, and the flow residential time.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
