@article{article_1702834, title={Investigation of Sodium Borohydride Synthesis from Anhydrous Borax: Impact of Stoichiometry and Alternative Reducing Agents}, journal={BİLİM-TEKNOLOJİ-YENİLİK EKOSİSTEMİ DERGİSİ}, volume={5}, pages={115–122}, year={2024}, author={Yılmaz, Kadir and Yaşar, Muzaffer}, keywords={Sodyum borhidrür, susuz boraks, kalsiyum karbür}, abstract={The production of sodium borohydride from anhydrous borax using aluminum and sodium hydroxide as reactants was investigated in a bomb-type batch reactor under hydrogen atmosphere. The study evaluated the effects of stoichiometric ratios and the addition of calcium carbide on yield and product composition. Experiments without calcium carbide, employing 100% molar excess of aluminum and sodium hydroxide, increased the yield from 11.31% to 13.28%. However, incorporating calcium carbide redirected the reaction mechanism, leading to the formation of complex phase structures. Structural characterization using FT-IR and XRD confirmed the consistency of products from Experiments 1 and 2 with reference NaBH₄. In contrast, products from Experiments 3, 4 and 5 showed significant deviations, with no NaBH₄-specific peaks observed. These findings underscore the importance of stoichiometric optimization and particle size reduction ( <150 μm) for improving reaction efficiency. Future studies should focus on refining process parameters and understanding the role of alternative reducing agent.}, number={2}, publisher={Çanakkale Onsekiz Mart Üniversitesi}, organization={This study was supported by the Istanbul University-Cerrahpaşa Scientific Research Projects Executive Secretariat.}