xxxx The NIAP-15-12 series catalysts are designed to purify process gases (nitrogen, argon, hydrogen, helium) from oxygen, waste gases from nitrogen oxide, carbon monoxide and ammonia, and deep oxidation of methane.The catalysts have a reduced activation temperature and can be used in all types of reactors, as well as in installations requiring low hydraulic resistance. They are available in the form of cylindrical granules with biconvex ends and seven holes.