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Title: Characterization of the metal-support interface in supported metal and supported metal complex catalysts. [Final report]

Re and Ir carbonyls, and other compounds, were chosen as precursors. MgO, La{sub 2}O{sub 3}, zeolite NaX and KL, among others, were chosen as supports. EXAFS was used to study the metal-support interactions. Structures formed on almost fully dehydroxylated MgO by HRe(CO){sub 5}, and on MgO by Ir{sub 4}(CO){sub 12}, were studied. A metal-oxygen distance of 2.15 {angstrom} holds in for the metal-support interface in oxide-supported metal clusters following reduction in H{sub 2} above 450 C; for reduction below 350 C, the distance is 2.5--2.7 {angstrom}.
Authors:
Publication Date:
OSTI Identifier:
10191456
Report Number(s):
DOE/ER/13790--5
ON: DE94001798; BR: KC0302010
DOE Contract Number:
FG02-87ER13790
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: [1992]
Research Org:
Delaware Univ., Newark, DE (United States). Center for Catalytic Science and Technology
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CATALYSTS; CATALYST SUPPORTS; INTERFACES; PROGRESS REPORT; RHENIUM COMPLEXES; IRIDIUM COMPLEXES; CARBONYLS; POWDERS; MAGNESIUM OXIDES 400201; CHEMICAL AND PHYSICOCHEMICAL PROPERTIES