کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9594652 | 1395891 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pd8Ni92(1Â 1Â 0) surface structure from surface X-ray diffraction. Surface evolution under hydrogen and butadiene reactants at elevated pressure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Pd8Ni92(1Â 1Â 0) surface structure from surface X-ray diffraction. Surface evolution under hydrogen and butadiene reactants at elevated pressure Pd8Ni92(1Â 1Â 0) surface structure from surface X-ray diffraction. Surface evolution under hydrogen and butadiene reactants at elevated pressure](/preview/png/9594652.png)
چکیده انگلیسی
The (NÂ ÃÂ 1) reconstruction (NÂ =Â 5-6) of the clean Pd8Ni92(1Â 1Â 0) surface has been investigated by surface X-ray diffraction. A good fit with experimental data collected under UHV conditions is obtained when introducing undulations in the outer dense rows, constituted mainly of Pd atoms which strongly segregate to the surface. This reconstruction can be regarded as a way to relax the strains induced on the bigger Pd surface atoms, at least partially. The modifications of the surface were studied under butadiene then hydrogen as well as during butadiene hydrogenation at elevated pressure at 300Â K and the (NÂ ÃÂ 1) reconstruction was found to be still present. The main changes are observed under pure hydrogen and during butadiene hydrogenation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 587, Issue 3, 10 August 2005, Pages 229-235
Journal: Surface Science - Volume 587, Issue 3, 10 August 2005, Pages 229-235
نویسندگان
M.C. Saint-Lager, Y. Jugnet, P. Dolle, L. Piccolo, R. Baudoing-Savois, J.C. Bertolini, A. Bailly, O. Robach, C. Walker, S. Ferrer,