| 摘要 |
PURPOSE:To obtain a highly active Pd catalyst which can selectively hydrogenate the C=C bonds in a conjugated diene polymer, by using a catalyst obtained by allowing a porous carrier to support Pd and a promotor which is a solution of a compound containing a specified element. CONSTITUTION:A supported catalyst obtained by allowing a porous carrier to support Pd and a promotor obtained by dissolving a compound containing at least one element selected from the group consisting of the elements of Groups IA, IIA, IVA, VA, VIA and VIIA of the periodic table, Cu, Al, B, Sn, Ce and La in a solvent are used in the hydrogenation of the C=C bonds in a conjugated diene polymer in a solvent. The amount of Pd supported on the carrier is 0.001-30wt%, preferably, 0.01-10wt%, based on the carrier. Examples of the compounds containing said elements include carboxylates, acetylacetonates, nitrates and carbonates of the elements.
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