Impact of Support and Potassium-Poisoning on the V2O5-WO3/ZrO2 Catalyst Performance in Ammonia Oxidation
Publication: Research - peer-review › Journal article – Annual report year: 2009
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Impact of Support and Potassium-Poisoning on the V2O5-WO3/ZrO2 Catalyst Performance in Ammonia Oxidation. / Due-Hansen, Johannes; Kustov, Arkadii; Christensen, Claus H.; Fehrmann, Rasmus.
In: Catalysis Communications, Vol. 10, No. 6, 2009, p. 803-806.Publication: Research - peer-review › Journal article – Annual report year: 2009
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TY - JOUR
T1 - Impact of Support and Potassium-Poisoning on the V2O5-WO3/ZrO2 Catalyst Performance in Ammonia Oxidation
A1 - Due-Hansen,Johannes
A1 - Kustov,Arkadii
A1 - Christensen,Claus H.
A1 - Fehrmann,Rasmus
AU - Due-Hansen,Johannes
AU - Kustov,Arkadii
AU - Christensen,Claus H.
AU - Fehrmann,Rasmus
PB - Elsevier BV
PY - 2009
Y1 - 2009
N2 - A series of WO3-promoted zirconia supports were synthesized and calcined between 400 and 800C. Subsequently vanadium oxide was introduced to obtain 3.5 wt% V2O5. The influence of the calcination temperature and potassium-poisoning (K/V = 0.2, molar ratio) on the catalytic activity in the selective catalytic reduction (SCR) of NO with NH3 was previously studied. Here, we focus on the influence of these parameters on the catalytic activity for the undesirable oxidation of ammonia, which decrease the N2 selectivity of the SCR process. It is found that potassium doping of the catalysts results in a considerable decrease in the overall ammonia conversion while selectivity to NO increases.
AB - A series of WO3-promoted zirconia supports were synthesized and calcined between 400 and 800C. Subsequently vanadium oxide was introduced to obtain 3.5 wt% V2O5. The influence of the calcination temperature and potassium-poisoning (K/V = 0.2, molar ratio) on the catalytic activity in the selective catalytic reduction (SCR) of NO with NH3 was previously studied. Here, we focus on the influence of these parameters on the catalytic activity for the undesirable oxidation of ammonia, which decrease the N2 selectivity of the SCR process. It is found that potassium doping of the catalysts results in a considerable decrease in the overall ammonia conversion while selectivity to NO increases.
KW - Crystallinity
KW - NH3 oxidation
KW - SCR catalysts
KW - Potassium
KW - Tungsten oxide
KW - Deactivation
U2 - 10.1016/j.catcom.2008.12.002
DO - 10.1016/j.catcom.2008.12.002
JO - Catalysis Communications
JF - Catalysis Communications
SN - 1566-7367
IS - 6
VL - 10
SP - 803
EP - 806
ER -