process for preparing a copper-containing molecular sieve with the structure of chabazite (cha), copper-containing molecular sieve, catalyst, use of catalyst, exhaust gas treatment system, and method for selectively reducing oxides of nitrogen oxides.

摘要

process for preparing a copper-containing molecular sieve with the structure of chabazite (cha), copper-containing molecular sieve, catalyst, catalyst use, exhaust gas treatment system, and method for selectively reducing nitrogen oxides in ~ ~. processes are disclosed for preparing copper-containing molecular sieves with the cha structure, where copper is exchanged to the chabazite form using a liquid copper solution, where the copper concentration is in a range. from about 0.001 to about 0.4 molar. Molecular sieves with the structure of tea, catalysts incorporating molecular sieves and methods for their use are also described.