Danmarks Tekniske Universitet

Umicore Ag & Co Kg

Siva Sankar Reddy Putluru

Anders Riisager

Francesco Castellino

Rasmus Fehrmann

Anker Degn Jensen

Jannik Blaabjerg Pedersen

Per Donskov Rams

The present invention concerns the selective removal of nitrogen oxides (NOx) from gases. In particular, the invention concerns a process, a highly alkali metal resistant heteropoly acid promoted catalyst and the use of said catalyst for removal of NOx from exhaust or flue gases, said gases comprising alkali or earth alkali metals. Such gases comprise for example flue gases arising from the burning of biomass, combined biomass and fossil fuel, and from waste incineration units. The process comprises the selective catalytic reduction (SCR) of NOx, such as nitrogen dioxide (NO) and nitrogen oxide (NO) with ammonia (NH) or a nitrogen containing compound selected from ammonium salts, urea or a urea derivative or a solution thereof as reductant.

Heteropoly acid promoted catalyst for SCR of NOx with ammonia

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Kgs. Lyngby, Denmark

Siva Sankar Reddy Putluru