Hansu, Tulin Avci2024-12-242024-12-2420230360-31991879-3487https://doi.org/10.1016/j.ijhydene.2022.04.269https://hdl.handle.net/20.500.12604/6577At present, a novel and active catalyst, RuW/MWCNT catalyst, was successfully synthe-sized to complete the hydrolysis reaction of sodium borohydride (NaBH4). The activity of Ru catalyst was increased by adding tungsten (W) to ruthenium (Ru) on multi-walled carbon nanotube (MWCNT) support. Surface characterization of the catalyst was performed with scanning electron microscope (SEM-EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmissing electron microscope (TEM) analysis methods. SEM-EDX revealed that RuW (95:5) catalyst metal ratio was obtained at desired nominal ratio. XRD characterization revealed that W addittion to the Ru structure increased its activity by forming an alloy. W addition Ru altered the electronic structure of the Ru. Parameters affecting the hydrolysis performance of RuW/MWCNT catalyst such as temperature, amount of catalyst, NaBH4 concentration and sodium hydroxide (NaOH) concentration were investigated. Adding NaOH to the reaction vessel reduced the activity of the RuW/ MWCNT catalyst. From the hydrolysis measurements, the activation energy of RuW(95-5)/ MWCNT catalyst was found to be 16.327 kjmol-1, the reaction order as 0.61 and the initial rate as 95,841,4 mL H2gcatmin-1. The stability of the RuW/MWCNT catalyst was tested using 5 times and it was observed that this novel RuW/MWCNT catalyst could complete the hydrolysis reaction despite repeated use.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/closedAccessNanoalloy catalystHydrolysisSodium borohydrideRuWMWCNTArticle481867886797Q1WOS:000964969400001Q12-s2.0-8513053019610.1016/j.ijhydene.2022.04.269