کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6468715 1362321 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Three-way catalytic converter reactions aspects at near-ambient temperatures on modified Pd-surfaces
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Three-way catalytic converter reactions aspects at near-ambient temperatures on modified Pd-surfaces
چکیده انگلیسی

The dissolution of oxygen in palladium plays an important role in palladium catalysis. The present study shows that the surface modification (SM) due to the dissolution of atomic oxygen into the subsurfaces of palladium can be used as a control to tune its catalytic activity. CO oxidation and NO + H2 + O2 reaction was separately carried out on metallic Pd and on surface modified Pd using a molecular beam instrument and the results were compared. The metallic Pd does not show activity below 400 K for both reactions, whereas the SM-Pd shows activity at near-ambient temperatures. The electronic change due to SM was investigated using ambient pressure photoelectron spectroscopy, and the investigation clearly shows the effect of subsurface oxygen in the ambient temperature activity of palladium.

253

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comptes Rendus Chimie - Volume 19, Issue 10, October 2016, Pages 1363-1369
نویسندگان
, , , , ,