Catalytic cleavage of the C-H and C-C bonds of alkanes by surface organometallic chemistry: An EXAFS and IR characterization of a Zr-H catalyst

Judith Corker*, Frédéric Lefebvre, Christine Lécuyer, Véronique Dufaud, Françoise Quignard, Agnès Choplin, John Evans, Jean-Marie Maurice Basset

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

194 Scopus citations

Abstract

The catalytic cleavage under hydrogen of the C-H and C-C bonds of alkanes with conventional catalysts requires high temperatures. Room-temperature hydrogenolysis of simple alkanes is possible on a well-defined and well-characterized zirconium hydride supported on silica obtained by surface organometallic chemistry. The surface structure resulting from hydrogenolysis of (=SiO)Zr(Np)3 (Np, neopentyl) was determined from the extended x-ray absorption fine structure (EXAFS) and 1H and 29Si solid-state nuclear magnetic resonance and infrared (IR) spectra. A mechanism for the formation of (≡SiO)3Zr-H and (SSiO)2SiH2 and the resulting low-temperature hydrogenolysis of alkanes is proposed. The mechanism may have implications for the catalytic formation of methane, ethane, and lower alkanes in natural gas.

Original languageEnglish (US)
Pages (from-to)966-969
Number of pages4
JournalScience
Volume271
Issue number5251
DOIs
StatePublished - Feb 16 1996

ASJC Scopus subject areas

  • General

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