Patent · US Expired

Catalytic hydrogenation over rhenium-containing catalysts supported on activated carbon

US7172989B2 · kind B2 · utility

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Key dates

Filing dateApr 13, 2005
Grant dateFeb 6, 2007
Priority date
Expiry dateJul 30, 2025

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C2601/20
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, platinum (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5 and, if appropriate, at least one further metal selected from among Zn, Cu, Ag, Au, Ni, Fe, Ru, Mn, Cr, Mo, W and V in a weight ratio to the activated carbon of from 0 to 0.25, and the activated carbon has been nonoxidatively pretreated. It is also possible to prepare ethers and lactones if the hydrogen pressure is not more than 25 bar. In this case, the activated carbon in the catalyst may also have been nonoxidatively pretreated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.