کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
55859 47064 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heteropoly acid promoted Cu and Fe catalysts for the selective catalytic reduction of NO with ammonia
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Heteropoly acid promoted Cu and Fe catalysts for the selective catalytic reduction of NO with ammonia
چکیده انگلیسی

Cu/TiO2, Fe/TiO2 and heteropoly acid promoted Cu/TiO2, Fe/TiO2 catalysts were prepared and characterized by N2 physisorption, XRPD, NH3-TPD, H2-TPR and EPR. The catalysts exhibited only crystalline TiO2 phases with the active metals and promoters in highly dispersed state. The acidic properties were studied and compared with the catalytic activity for the selective catalytic reduction (SCR) of NO with ammonia. The SCR activities and acidity values of heteropoly acid promoted catalysts were found to be much higher than unpromoted catalysts. The influence of potassium poisons on the SCR activity and acidity was lower for promoted catalysts than for unpromoted catalysts. In the heteropoly acid promoted catalysts the SCR active Cu and Fe metals were protected from potassium poisons by bonding of the potassium to the Brønsted acid centres. Thus heteropoly acid promoted catalysts might be suitable for biomass fired power plant SCR applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 176, Issue 1, 1 November 2011, Pages 292–297
نویسندگان
, , , ,