초록

The production process consists of starting with a carbon foam, increasing its specific surface by an activation treatment using carbon dioxide and then contacting the thus activated foam with a volatile compound of the metal, whose carbide it is wished to obtain.

대표청구항 ▼

[ What is claimed is:] [1.]1. Carbide foam of an element selected from the group consisting of Si, Mo, W, Re, V, Nb, Ta, Ti, Cr, Ni, rare earth elements and actinide elements, for use as a catalyst or catalyst support having open pores including macropores of a pore diameter between 50 and 500 .mu.m

[ What is claimed is:] [1.]1. Carbide foam of an element selected from the group consisting of Si, Mo, W, Re, V, Nb, Ta, Ti, Cr, Ni, rare earth elements and actinide elements, for use as a catalyst or catalyst support having open pores including macropores of a pore diameter between 50 and 500 .mu.m and mesopores of a pore diameter between 30 and 50 Angstroms in the form of a three-dimensional network of interconnected cages, a density between 0.03 and 0.1 g/cm.sup.3, a BET specific surface area between 20 and 100 M.sup.2 /g, no more than 0.1% by weight residual said element and carbide crystallites of a size between 40 and 400 Angstroms.