EXAFS Peaks and TPR Characterizing Bimetallic Interactions: Effects of Impregnation Methods on the Structure of Pt-RuC Catalysts
Joint Authors
Chen, Nan-Yu
Liu, Ming-Chun
Yang, Shih-Chieh
Chang, Jen-Ray
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-12
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
To investigate bimetallic interactions, Pt-Ru/C catalysts were prepared by coimpregnation (Pt-Ruco/C) and successive impregnation (Ru-Ptse/C), while Pt/C, Ru/C, and reduced Pt-Rublack were used as reference.
Those samples were characterized by XAS and TPR.
When Pt(absorber)-Ru(backscatter) phase-and-amplitude correction is applied to Fourier transformed (FT) EXAFS of Pt-Rublack at Pt edge, the characteristic peak of Pt-Ru interactions appears at 2.70 Å´, whereas, when Pt-Pt correction is applied, the peak appears at about 2.5 Å´.
Detailed EXAFS analysis for Pt-Ruco/C and Pt-Ruse/C confirms the nature of the characteristic peak and further indicates that the interactions can semiquantitatively be determined by the relative intensity between Pt-Ru and Pt-Pt characteristic peaks.
This simple method in determining bimetallic interaction can be extended to characterize Pt-Pd/γ-Al2O3.
However, for Pt-Re/γ-Al2O3, Pt-Re interactions cannot be determined by the method because of the overlap of Pt-Pt and Pt-Re characteristic peaks due to similar phase functions.
American Psychological Association (APA)
Chen, Nan-Yu& Liu, Ming-Chun& Yang, Shih-Chieh& Chang, Jen-Ray. 2014. EXAFS Peaks and TPR Characterizing Bimetallic Interactions: Effects of Impregnation Methods on the Structure of Pt-RuC Catalysts. Journal of Spectroscopy،Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-1043089
Modern Language Association (MLA)
Chen, Nan-Yu…[et al.]. EXAFS Peaks and TPR Characterizing Bimetallic Interactions: Effects of Impregnation Methods on the Structure of Pt-RuC Catalysts. Journal of Spectroscopy No. 2014 (2014), pp.1-12.
https://search.emarefa.net/detail/BIM-1043089
American Medical Association (AMA)
Chen, Nan-Yu& Liu, Ming-Chun& Yang, Shih-Chieh& Chang, Jen-Ray. EXAFS Peaks and TPR Characterizing Bimetallic Interactions: Effects of Impregnation Methods on the Structure of Pt-RuC Catalysts. Journal of Spectroscopy. 2014. Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-1043089
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1043089