ZSM-5 and mordenite (MOR), directly grown on a stainless-steel metal gauze support and subsequently exchanged with cerium ions, were applied as a NO reduction catalyst. These supported cerium-zeolite catalysts were found to show turnover frequencies comparable to that of an unsupported cerium-exchanged mordenite. Furthermore, the thermostability of these materials was examined by a calcination-activity test cycle and Ce-ZSM-5 was found to be more stable than Ce-MOR. The present approach to grow zeolite directly on a support offers a new possibility to apply zeolite efficiently on a metal monolith applicable for NOx emission control of mobile sources.