کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10243076 46910 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Selective catalytic reduction of nitric oxide with ammonia on copper (II) ion-exchanged offretite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Selective catalytic reduction of nitric oxide with ammonia on copper (II) ion-exchanged offretite
چکیده انگلیسی
Copper K-offretite catalysts prepared by ion exchange were characterized by XRD, H2-TPR and evaluated in the selective catalytic reduction of NO (NO-SCR) by ammonia. Despite several successive exchanges, the quantity of copper introduced remains low and the exchange ratio does not exceed 50%. The NO conversion profiles have a sigmoid curve shape. Full NO conversion in N2 is reached above 340 °C at a volume space velocity of 332,000 h−1. N2O formation at low temperature is due to the presence of small oxide particles generated by the successive copper exchanges during the preparation. The presence of K ions “blocks” the cancrinite access to copper ions and maintains the deNOx efficiency over the whole range of temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 6, Issue 4, April 2005, Pages 281-285
نویسندگان
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