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

2 2002

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Application of pillared clays modified with transition metals in reduction of NO with C2H4.

100%

Chmielarz L. , Zbroja M. , Kuśtrowski P. , Rafalska-Łasocha A. , Dziembaj R.

tom Vol. 10, nr 57

463-468

Montmorillonites, pillared with Al2O3 or TiO2, were modified by introduction of transition metal (Cu or Co) by ion exchange method. Pillaring of clay with alumina caused significant increase of surface area and micropore volume due to increase of interlayer distance. Modification of montmorillonite with titania also resulted in increase of surface area and porosity, however pillared material was characterized by delaminated structure. Additionally, part of TiO2 was deposited on the sample surface in form of separate phase. Among the studied catalysts, titania pillared montmorillonites modified with copper have shown the highest activity in reduction of NO with ethylene in flue gas purifn.

Pillared montmorillonites modified with copper or cobalt as catalysts of DENOX with ammonia.

100%

Chmielarz L. , Zbroja M. , Dudek B. , Dziembaj R.

tom Vol. 10, nr 57

451-456

Al2O3 or TiO2 pillared montmorillonites modified with Cu or Co have been studied as catalysts for NO reduction with ammonia. The type of a pillaring agent, introduced transition metal, and preparation conditions strongly influenced catalytic performance of obtained materials. Among the studied samples, the highest catalytic activity was measured for Ti-pillared montmorillonites modified with copper. All studied catalysts were characterized by high selectivity towards N2.