SUPPORTED ORGANOACTINIDES. SURFACE CHEMISTRY AND CATALYTIC PROPERTIES OF ALUMINA-BOUND (CYCLOPENTADIENYL)- AND (PENTAMETHYLCYCLOPENTADIENYL)THORIUM AND -URANIUM HYDROCARBYLS AND HYDRIDES.

Ming Yuan He, Guoxing Xiong, Paul J. Toscano, Robert L. Burwell, Tobin J. Marks

Research output: Contribution to journalArticle

100 Citations (Scopus)

Abstract

A report is presented on a quantitative investigation of surface chemistry and catalysis involving selected organoactinides and partially dehydroxylated (PDA) or dehydroxylated (DA) alumina supports. For the complexes Cp prime //2M(CH//3)//2 and Cp prime //2M(CD//3)//2(Cp prime equals eta **5-(CH//3)//5C//5; M equals Th, U), methane-evolving surface reaction pathways are identified as M-CH//3 protonolysis via surface OH (especially on PDA), Cp prime H atom abstraction, and intramolecular elimination of methane within M(CH//3)//2 units. This latter process is proposed on the basis of methylene transfer to acetone and some olefin metathesis activity to result in Al**3** plus -stabilized alkylidenes. Hydrogenolysis studies indicate that ca. 25% of the Cp prime //2M(CH//3)//2/DA surface M-CH//3 groups are removable as methane; reduction of methyl chloride to methane confirms the presence of surface M-H groups produced by hydrogenolysis.

Original languageEnglish
Pages (from-to)641-652
Number of pages12
JournalJournal of the American Chemical Society
Volume107
Issue number3
Publication statusPublished - Feb 6 1985

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Thorium
Uranium
Aluminum Oxide
Methane
Surface chemistry
Hydrides
Alumina
Hydrogenolysis
Methyl Chloride
Surface reactions
Alkenes
Acetone
Catalysis
Olefins
Atoms

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

SUPPORTED ORGANOACTINIDES. SURFACE CHEMISTRY AND CATALYTIC PROPERTIES OF ALUMINA-BOUND (CYCLOPENTADIENYL)- AND (PENTAMETHYLCYCLOPENTADIENYL)THORIUM AND -URANIUM HYDROCARBYLS AND HYDRIDES. / He, Ming Yuan; Xiong, Guoxing; Toscano, Paul J.; Burwell, Robert L.; Marks, Tobin J.

In: Journal of the American Chemical Society, Vol. 107, No. 3, 06.02.1985, p. 641-652.

Research output: Contribution to journalArticle

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