Researchers in South Korea have developed advanced liquid metal catalysts incorporating selenium (Se) to improve the efficiency of turquoise hydrogen production. Turquoise hydrogen, generated through methane pyrolysis, produces hydrogen and solid carbon without emitting carbon dioxide. The research team at the Korea Research Institute of Chemical Technology introduced selenium-doped molten metal catalysts (NiBi, CuBi) to enhance methane pyrolysis efficiency, achieving high methane conversion rates and stable catalyst performance. By reducing surface tension and improving the contact area between gases and catalysts, selenium promotes hydrogen production efficiency and lowers the activation energy required for methane conversion. The ternary molten metal catalysts (NiBiSe, CuBiSe) demonstrated significant improvements in methane-to-hydrogen conversion efficiency compared to conventional catalysts. The NiBiSe catalyst maintained stable performance for over 100 hours, indicating potential commercial viability. The technology is seen as a key innovation for carbon-free turquoise hydrogen production, contributing to achieving carbon neutrality goals. The researchers believe that this breakthrough will accelerate the commercialization of clean hydrogen production, with future research aimed at enhancing process efficiency for commercial deployment by 2030.