ECONOMICALLY VIABLE LOW TEMPERATURE HYDROGEN PRODUCTION USING ALUMINUM-WATER SPLITTING METHODS
23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022, İstanbul, Türkiye, 26 - 30 Haziran 2022, ss.71-73, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.71-73
- Anahtar Kelimeler: Aluminum activation, Clean energy, Density functional theory, Hydrogen generation
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
Hydrogen can be produced as a thermochemical by-product from the reactions involving metals such as Na, Al, And Fe with water in tbe gas or liquid phase. The effectiveness of the splitting of hydrogen from water molecule can be increased using activators or catalysts. The faster chemical reaction rate is demanding to meet the industry needs. The process controlling should be implemented in this reaction, since metal reaction with water is exothermic in nature. In this work, cylindrical aluminum wires are activated using a NaOH solution and hydrogen production rate is studied experimentally as a function of several parameters including temperature and wire diameter. To provide an atomistic insight into our experimental results, first-principles total energy calculations were carried out using density functional theory (DFT). Activation barriers calculated by DFT are compared with experimental results and validate our theoretically proposed reaction mechanism.