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1 Prace Naukowe Instytutu Chemii i Technologii Nafty i Węgla Politechniki Wrocławskiej. Konferencje

1 2002

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Zeolite catalysts for catalytic decomposition and reduction of NOx.

Jagielska E., Mostowicz R., Szarlik S., Mejsner J.

Prace Naukowe Instytutu Chemii i Technologii Nafty i Węgla Politechniki Wrocławskiej. Konferencje

2002

Vol. 10, nr 57

189-195

Catalytic decompostion and reduction of NOx by NH3 and CO in the presence of MFI zeolites and MFI zeolite containing catalysts was investigated. The catalyst activity was studied as a function of zeolite ion exchanged form (Na, H, Cu forms), type of an element introduced into zeolite framework, process temperature. Isomorphous substituted Fe, Co, Mn and mixed forms of these elements were used. Three types of catalysts were tested: a) pure zeolites, b) zeolites deposited on a-Al2O3 or cordierite, c) zeolite extrudates with g-Al2O3. [Fe]-MFI crystallized on a-Al2O3 used in the reduction of NOx by CO was the best catalyst. In the process of catalytic reduction of NOx by NH3 the best results were obtained in the presence of Na-[Fe]-MFI molecular sieve. In the process of NOx decomposition, the highest conversion values were obtained in the presence of Cu-[Al]-MFI and [Fe]-MFI.