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Vapor-phase carbonylation of methanol on an active carbon supported iridium-catalyst (1993)

Zehl, G. ; Bischoff, S. ; Lücke, B.

Springer

Catalysis letters 19 (1993), S. 247-255

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ISSN: 1572-879X

Keywords: Iridium catalyst ; supported catalyst ; vapor-phase carbonylation ; methanol carbonylation ; active carbon support

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Abstract Iridium on active carbon (Ir/A.C.) is an effective catalyst for the vapor-phase carbonylation of methanol. In contrast to rhodium-catalysts the reaction rate is nearly independent of the partial pressure of the methyl iodide promoter and the methanolysis of an iridium-acetyl species has been found to determine the rate. Undesired methane formation accompanying the carbonylation is suggested to proceed via proteolysis of iridium-methyl species by methanol or water. Methyl chloride has been found to be a less effective promoter than methyl iodide.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00771761

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