NDLI: Investigations of Graphitic Overlayers Formed from Methane Decomposition on Ru ( 0001 ) and Ru ( 11 20 ) Catalysts with Scanning Tunneling Microscopy and High-Resolution Electron Energy Loss Spectroscopy

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Investigations of Graphitic Overlayers Formed from Methane Decomposition on Ru ( 0001 ) and Ru ( 11 20 ) Catalysts with Scanning Tunneling Microscopy and High-Resolution Electron Energy Loss Spectroscopy

Content Provider	Semantic Scholar
Author	Wu, Mengtian Xu, Qiang Wayne, David
Copyright Year	2001
Abstract	A graphitic phase is very unreactive toward hydrogenation and represents a deactivated surface. In the present study, the inactive form of carbon formed from methane decomposition on single-crystal Ru catalysts has been characterized using scanning tunneling microscopy (STM) and high-resolution electron energy loss spectroscopy (HREELS). The results show that the carbonaceous species formed on Ru surfaces a t temperatures exceeding 800 K is graphitic. On a Ru(0001) surface, a graphitic species initially forms discrete clusters with dimensions 10-15 A in diameter and 2-3 A in apparent height. Only a t temperatures exceeding 1300 K is the hexagonal superstructure of continuous graphite monolayers observed. In contrast, the carbonaceous species from methane decomposition at 800 K nucleates to form large three-dimensional particles of graphite on Ru( 1 130).
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.chem.tamu.edu/rgroup/goodman/pdf%20files/pdf%20files/252_jpcb_98_94_5104_j100070a027.pdf
Language	English
Access Restriction	Open
Subject Keyword	CT scan Diameter (qualifier value) Dimensions Electron energy loss spectroscopy HPS6 gene Hydrogenation Image resolution Inactive - Biochemical Activity Level Microscopy Microscopy, Scanning Tunneling Natural graphite Phase II/III Trial Tunneling protocol adenotonsillectomy
Content Type	Text
Resource Type	Article

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