Supported f-element complexes: surface chemistry and catalysis. Progress report, April 1, 1983-April 1, 1984

Technical Report · Sun Apr 01 04:00:00 EST 1984

OSTI ID:7139249

Marks, T J; Burwell, Jr, R L

An accurate and reliable method for measuring the amount of CO adsorbed on organoactinide complex/alumina and the ensuing depression in catalytic activity for the hydrogenation of propylene has been developed. Several previously unexamined complexes deposited on dehydroxylated alumina have been studied. Cp/sub 2/'Th(neopentyl)/sub 2/ (Cp' = pentamethylcyclopentadienyl) leads to catalysts slightly more active for the hydrogenation of propylene at -63/sup 0/C than Cp/sub 2/'Th(CH/sub 3/)/sub 2/. It is also active for the polymerization of ethylene at 25/sup 0/C. Cp'Th(benzyl)/sub 3/ is considerably more active and ranks among the most active hydrogenation catalysts known. Coordinatively more saturated Cp/sub 3/Th(n-butyl) and Cp/sub 3/UCH/sub 3/ lead to zero hydrogenation activity at -63 and 0/sup 0/C, but to some activity at 100/sup 0/C. Silica gel with 0.5 silanol groups per nm/sup 2/ does not lead to active catalysts. Both optical (f-f transitions) and high resolution solid state nmr spectroscopy have been used to characterize the structures of the adsorbed molecules.

• Research Organization: Northwestern Univ., Evanston, IL (USA). Dept. of Chemistry
• DOE Contract Number: AC02-81ER10980
• OSTI ID: 7139249
• Report Number(s): DOE/ER/10980-3; ON: DE84011593
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACTINIDE COMPLEXES
ADSORBENTS
ADSORPTION
ALKENES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPLEXES
ETHYLENE
HYDROCARBONS
HYDROGENATION
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYMERIZATION
PROPYLENE
RESEARCH PROGRAMS
SILICA GEL
SORPTION
THORIUM COMPLEXES
URANIUM COMPLEXES