Oxygen activation and transfer catalyzed by ruthenium porphyrins

Research output: Contribution to journalConference article

Abstract

The author has recently described the preparation and characterization of a trans-dioxo ruthenium (VI) porphyrin complex which has been shown to be an efficient catalyst for the aerobic epoxidation of olefins. It was also shown that this complex catalyzes the hydroxylation of alkanes under appropriate conditions. It is now apparent that the dioxoruthenium (VI) complex is the species responsible for oxygen transfer and that an intermediate oxoruthenium (IV) complex is then reoxidized in air. It was shown that the oxidation of ruthenium (IV) to ruthenium (VI) proceeds via a disproportionation to produce both ruthenium (VI) and ruthenium (II) porphyrin complexes. The ruthenium (II) complex reacts rapidly with oxygen to regenerate the oxoruthenium (IV) intermediate which then continues the catalytic cycle. Experimental results which illuminate this oxygen activation and transfer process are described.

Original languageEnglish (US)
Number of pages1
JournalAmerican Chemical Society, Division of Petroleum Chemistry, Preprints
Volume35
Issue number2
StatePublished - Apr 1 1990
EventSymposium on Selective Catalytic Oxidation of Hydrocarbons - Presented before the Division of Petroleum Chemistry, ACS, Boston Meeting - Boston, MA, USA
Duration: Apr 22 1990Apr 27 1990

All Science Journal Classification (ASJC) codes

  • Fuel Technology

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