Patent ID: 6114567
Filing Date: 2000-09-05
Classification: B01J,C07C

Abstract:
to 5% by weight, based on (a), of a promoter containing a metal selected from the group consisting of Zn, Cd, Pb, Al, Sn, As, and Sb and(c) from 0 to 5% by weight, based on (a), of a trace component containing a metal selected from the group consisting of an alkali metal and an alkaline earth metal, with the proviso that the component (a) does not have iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter having a metal selected from the group consisting of titanium, manganese, chromium and molybdenum,and with the further proviso that, when a compound based on only ruthenium or ruthenium and rhodium or rhodium and nickel is selected as component (a), the promoter (b) may, optionally, be dispensed with, whereby the catalyst is obtained by(I) precipitating precursors of the components (a) to (c) from aqueous solutions in the presence or absence of carriers yielding a precipitate, then(II) optionally processing the resulting precipitate to give extrudates or pellets, then(III) drying the precipitate or pellets or extrudates at a temperature of from 80 to 150.degree. C. yielding a dried product, and(IV) then calcinating the dried product at a temperature from