| abstract |
The metallization of porous solids, e.g. Ion exchangers, by loading the surfaces of the metal-free substrates with transition metal ions and subsequent treatment with reducing agents, can be improved by activating the substrates before or after the metal ion loading with elements of the 1st or 8th subgroup of the periodic table or their compounds and, if appropriate, sensitizing them. The metallization products are valuable hydrogenation catalysts. |