FIELD: catalytic chemistry.
SUBSTANCE: according to the invention, a microporous crystalline material for the selective catalytic reduction of nitrogen oxide in exhaust gas is provided, having a silica to alumina molar ratio (SAR) in the range of 10 to 15, an acidity in the range of 1.35 mmol/g to 2.0 mmol/g and the proportion of Al as part of the zeolite, which, when identified by the adsorption of n-propylamine, is 0.63 or more. The invention is also related to a method for the selective catalytic reduction of nitrogen oxides in an exhaust gas, comprising at least partial contact of said exhaust gases with an article containing a microporous crystalline material, and to a method for producing a microporous crystalline material.
EFFECT: improved performance of material for selective catalytic reduction of nitrogen oxides in exhaust gas, as well as selective catalytic reduction of nitrogen oxides in exhaust gas.
26 cl, 3 dwg, 3 tbl, 13 ex
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