NOXO DB02-F is a palladium-based heterogeneous catalyst supported on activated alumina beads, with a diameter of 2 to 5 mm, ensuring a fine-tuned distribution size range. This catalyst plays a crucial role in removing oxygen from hydrogen by catalyzing the H2–O2 recombination reaction, which is essential for enhancing hydrogen purity and safety in green hydrogen production via water electrolysis. NOXO DB02-F is recommended for purifying hydrogen streams from oxygen contamination at ppm levels, maintaining the O2 concentration in the H2 outlet stream and storage tanks well below the lower explosion limit (LEL) of 4% v/v.