Patent ID: 8052775
Filing Date: 2011-11-08
Classification: B01D,C01B,Y10T

Abstract:
1. A process for the preparation of a two layer metal palladium—or palladium alloy—composite membrane consisting of a porous substrate support and a palladium—or palladium alloy—membrane comprising the following consecutive steps: 1) rinsing/washing and drying the porous substrate support, 2) treating the porous substrate support with a pore filler in order to decorate the pores of the support and the disfigurements of the substrate surface, 3) sensitizing and activating with a palladium solution the decorated substrate support, 4) plating the resulting support with a palladium solution to form the two layer composite membrane, 5) drying, and 6) subjecting the resulting composite membrane to a post-processing before or after drying by heating to partly remove or reduce in volume the pore fillers residing in the pore-channels of the porous substrate.