Process for the manufacture of resorcinols from...

Details Process for the manufacture of resorcinols from... Process for the manufacture of resorcinols from...

C - Chemistry, Metallurgy

07

C

260/475.3, 260/6

C07C 39/08 (2006.01) C07C 37/07 (2006.01) C07C 43/23 (2006.01) C07C 69/84 (2006.01)

Patent

CA 1143746

Abstract of the disclosure Resorcinols are prepared by converting ?-ketocarboxy- lic acid esters in the gaseous phase at a temperature from 250 to 500°C in the presence of hydrogen at a catalyst. The catalyst consists of two components which are prepared separately and combined thereafter. The first component contains at least one compound of a metal of group VIII and/or at least one compound of a metal of group I B sup- ported on one or several carrier materials. The second com- ponent contains at least one compound of a metal of group II A and/or IV A and/or III B and/or IV B supported on one or several carrier materials. A particularly preferred catalyst consists of a mixture of equal volume parts of platinum/charcoal as fist component and of thorium/charcoal as second component.

329421

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