Patent ID: 9695095
Date: 2017-07-04
CPC Classifications: B01J,C07C,C10G

Claim:
1. A process for preparing a selective hydrogenation catalyst comprising, contacting a catalyst precursor in the metallic form, in the liquid phase and in the presence of a reducing and/or inert atmosphere, with a non-polar solvent containing a silicon compound, that is a silane containing at least one Si—H bond and at least one Si—C bond, of the formula Si x H y R z , wherein x is an integer of 1 to 6, y is an integer of 1 to 2x+1, and z is an integer of 1 to 2x+1, the sum of y+z being 2x+2, and R is a monovalent hydrocarbon radical, identical or different for each valence, that is a saturated aliphatic radical, an unsaturated aliphatic radical, a cycloalkyl radical, an aryl radical or an arylalkyl radical, a silanol of the formula Si x (OH)R 2x+1 , wherein x is an integer within the range 1 to 6 and R is a monovalent hydrocarbon radical, identical or different for each valence, that is a saturated aliphatic radical, an unsaturated aliphatic radical, a cycloalkyl radical, an aryl radical or an arylalkyl radical or a cyclic siloxane in which a principal —Si—O—Si—O— chain forms a ring and is composed of (R 2 SiO) n units, with n being an integer of 3 to 11, and R is a monovalent hydrocarbon radical, identical or different for each valence, that is a saturated aliphatic radical, an unsaturated aliphatic radical, a cycloalkyl radical, an aryl radical or an arylalkyl radical, wherein the catalyst precursor, comprises palladium in the metallic form and at least one support comprising at least one simple oxide that is alumina, silica, titanium oxide, cerium oxide or zirconium dioxide.