Combinatorial chemistry is an efficient technique for the synthesis and scr
eening of a large number of compounds. Recently, we introduced the combinat
orial approach to computational chemistry for catalyst design and proposed
a new method called 'combinatorial computational chemistry'. In the present
study, we have:applied this combinatorial computational chemistry approach
to the design of deNO(x) catalysts. Various ion-exchanged ZSM-5 are candid
ates as catalysts for the removal of nitrogen oxides (NOx) from exhaust gas
es in the presence of excess oxygen. Here, we describe the screening of the
exchange cations in ion-exchanged ZSM-5 which are strong against poisons.
We investigated the adsorption energies of NO and water on various ion-exch
anged ZSM-5 catalysts. Cu+, Ag+, Au+, Fe2+, Co2+, Ni2+, Pd2+, Pt2+, Cr3+, F
e3+, Ir3+ and Tl3+ were found to have high resistance to water molecules du
ring the deNO(x) reaction. (C) 2000 Elsevier Science B.V. All rights reserv
ed.