A short review about NOx storage-reduction catalysts based on metal oxides and hydrotalcite-type anionic clays

Abstract

The increasing problem of atmospheric pollution by NO x has resulted in stricter regulations on their emissions. NO x storage/reduction (NSR) is considered as efficient catalytic technology to abate lean-burn NO x . A wide variety of catalysts have been extensively examined for this purpose. The use of metal oxides, hydrotalcites and their derivatives as NO x storage/reduction catalysts has been reviewed. Suitable combination particularly the catalytic redox component and the storage component can lead to improved activity in NO x decomposition and capturing under the lean-rich conditions. ARTICLE INFO

A Review on the Catalytic Hydrogenation of Bromate in Water Phase

“…It has been successfully used for the removal of some air pollutants as NO x , VOCs etc. [1][2][3][4][5][6][7][8]. Nevertheless, the use of catalysis for the control of water pollutants is more complicated because catalysts must be stable in order to avoid leaching to water and must be active at room temperature and atmospheric pressure in order to be economically viable.…”

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