کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
39067 45802 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
CO preferential oxidation under H2-rich streams on copper oxide supported on Fe promoted CeO2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
CO preferential oxidation under H2-rich streams on copper oxide supported on Fe promoted CeO2
چکیده انگلیسی


• Fe addition to copper/ceria catalyst for CO-PROX has been studied.
• Fe-promoted sample outperforms, mainly in terms of selectivity.
• HRTEM and XPS revealed enhanced copper dispersion on Fe-promoted catalyst.
• TPRs suggest H2 activation delayed at higher temperature on Fe-promoted sample.

In this work the effect of Fe addition to copper/ceria catalysts on the catalytic activity toward CO-PROX reaction has been studied and related to the modification of textural and redox properties induced by iron. Catalysts have been characterized by the use of BET surface area measure, X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS) and TPR with different reducing mixtures (CO/N2 and/or H2/N2). Results show that iron promotes a superficial enrichment of highly dispersed copper sites improving catalyst reducibility, especially under CO-containing mixture, thus resulting in an enhanced selectivity of CO-PROX reaction.

Figure optionsDownload high-quality image (105 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 506, 5 October 2015, Pages 268–277
نویسندگان
, , , , , , ,