Dong Joon Ko

Abstract NO x abatement has been an indispensable part of environmental catalysis for decades. Selective catalytic reduction with ammonia using V 2 O 5 /TiO 2 is an important technology for removing NO x emitted from industrial facilities. However, it has been a huge challenge for the catalyst to operate at low temperatures, because ammonium bisulfate (ABS) forms and causes deactivation by blocking the pores of the catalyst. Here, we report that physically mixed H-Y zeolite effectively protects

A nonthermal plasma process (dielectric-packed bed reactor) was combined with catalyst to remove nitrogen oxides (NO x ). Two different honeycomb catalysts such as V 2 O 5 /TiO 2 and Cr 2 O 3 /TiO 2 were compared with respect to the removal characteristic of NO x . The effect of oxygen content, water vapor, feed gas flow rate, reaction temperature, and initial concentration on the removal of NO x was examined. The plasma discharge was found to largely enhance the removal of NO x on the catalyst.

The impregnation of NaOH solution into the pores of cobalt-exchanged zeolite promoted the conventional reduction of cobalt ions with hydrogen gas. The method yielded catalysts that had high degrees of reduction and small cobalt clusters located inside zeolite pores. In the Fischer-Tropsch synthesis these catalysts showed a chain-extension effect, producing hydrocarbons higher than C-10 inappreciable amounts, and an enhanced production of linear hydrocarbons such as 1-olefins and n-paraffins. The