A NEDO consortium around Mitsubishi Chemical Co. and others has synthesized a zeolite catalyst for NOx purification in automobiles showing high durability and activity over a wide temperature zone. By combining an ultra-high speed synthesis method and formation of fine particles, a copper-zeolite was obtained which contains many active sites and extremely few defects. The catalyst hardly deteriorates even at high temperature and maintains high activity, so it can be used in a temperature zone which could not be used up to now and makes it possible to select driving conditions with good fuel economy.
NEDO news release, February 7, 2018
NEDO consortium develops Cu-based zeolite for NOx purification from car exhausts