کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4455297 1312512 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of Ce on catalytic combustion of methane over Pd-Pt/Al2O3 catalyst
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
پیش نمایش صفحه اول مقاله
Effects of Ce on catalytic combustion of methane over Pd-Pt/Al2O3 catalyst
چکیده انگلیسی

Activity and stability of 1%Pd-0.2%Pt/Al2O3 and 1%Pd-0.2%Pt/0.6%Ce/Al2O3 catalysts prepared by impregnation method for catalytic combustion of methane in air were investigated. The catalysts before and after reaction were characterized by BET, CO chemisorption, XRD and XPS techniques. Results showed that the presence of Ce significantly increased the activity and thermal stability of the Pd-Pt/Al2O3 catalyst towards methane combustion, which could be attributed to more highly-dispersed active PdO particles over the Pd-Pt/Ce/Al2O3 catalyst surface as well as the retarded sintering of PdO and the maintained oxidized state of surface Pd during the combustion process in the presence of Ce.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Sciences - Volume 24, Issue 3, March 2012, Pages 507-511