Comprehensive numerical analysis of hydrogen production via methane pyrolysis
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.252, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 252
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.ijhydene.2026.156255
- Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Artic & Antarctic Regions, Chemical Abstracts Core, Chimica, Compendex, Environment Index, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Ankara Üniversitesi Adresli: Evet
Özet
Hydrogen is a key energy carrier for decarbonization due to its high energy density and zero carbon emissions. Methane pyrolysis has emerged as a promising alternative to conventional hydrogen production routes, offering intrinsic carbon capture without CO2 formation. In this study, the impact of reactor geometrical characteristics on methane pyrolysis performance was numerically investigated using COMSOL Multiphysics. The model was validated against literature data, showing strong agreement. The results demonstrate that geometric scaling significantly alters flow structure, transport phenomena, and carbon formation kinetics. A 25% increase in reactor dimensions enhances velocity magnitude by 9.61% and solid carbon formation by 6.66% at 1373 K, whereas a 25% reduction leads to decreases of 7.69% and 11.11%, respectively. At 1273 K, the methane decomposition rate increased by 49.3% with a proportional increase in the reactor geometry, whereas it decreased by 30% with a proportional reduction in the reactor geometry.