کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
63185 47675 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Selective catalytic reduction of NOx by H2 using proton conductors as catalyst supports
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Selective catalytic reduction of NOx by H2 using proton conductors as catalyst supports
چکیده انگلیسی

The selective catalytic reduction (SCR) of NOx by H2 was studied using proton-conducting Sn0.9In0.1P2O7 as a catalyst support at 50–350 °C. When a mixture of 800 ppm NO, 1400–8400 ppm H2, and 5% O2 in Ar was introduced to the Pt/C working electrode, NOx was reduced to N2 with N2 selectivity values >80%>80%. The reaction mechanism was shown to be based on a mixed potential at the Pt/C working electrode. This mechanism was also applicable to a Sn0.9In0.1P2O7-supported Pt catalyst. H2 SCR over the Pt/Sn0.9In0.1P2O7 catalyst was characterized by a wide operating temperature window (50–350 °C) and remarkable N2 selectivity values (>80%>80%). Catalyst performance could be further improved by the addition of Rh to Pt, in which NOx conversion was a maximum 1.4 times higher than that over the Pt/Sn0.9In0.1P2O7 catalyst and N2 selectivity was increased to >89%>89% at all temperatures tested.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Catalysis - Volume 247, Issue 2, 25 April 2007, Pages 137–144
نویسندگان
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