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Oxidation of ammonia over a copper oxide-containing solid oxygen carrier with oxygen uncoupling capability

Fredrik Normann (Institutionen för energi och miljö, Energiteknik) ; M. Cheng ; Dongmei Zhao (Institutionen för kemi och kemiteknik, Oorganisk miljökemi) ; Z. S. Li ; N. S. Cai ; Henrik Leion (Institutionen för kemi och kemiteknik, Oorganisk miljökemi)
Combustion and Flame (0010-2180). Vol. 165 (2016), p. 445-452.
[Artikel, refereegranskad vetenskaplig]

Measurements and modelling of the oxidation of ammonia over copper oxide (CuO) under conditions relevant to chemical-looping combustion with oxygen uncoupling show that CuO fully converts NH3 into NO or N-2 under most of these conditions. Our experiments demonstrate that considerable amounts of NO are formed when the oxygen carrier is fully oxidised. Decreasing the degree of oxidation of the oxygen carrier affected the selectivity of the NH3 oxidation towards NO. Ageing of the oxygen carrier had a similar effect. Modelling suggests that these results reflect a change in the rate of oxygen release from the CuO particles.

Nyckelord: Solid oxygen carrier, Copper oxide, Oxygen uncoupling, Ammonia oxidation, Nitrogen oxides



Denna post skapades 2016-04-06. Senast ändrad 2016-08-22.
CPL Pubid: 234213

 

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