Patent ID: 6790390
Filing Date: 2004-09-14
Classification: B01J,C04B,Y10T

Abstract:
A process for the preparation of composite material comprising activated carbon and expanded graphite, wherein:said material constitutes a block within which the activated carbon is distributed homogeneously and uniformly in the form of microporous particles; the texture of the microporous particles is characterized by a micropore volume W0 of between 0.1 cm3Â·gâˆ’1 and 1.5Â·cmâˆ’1 and a mean size of the micropores L0 of between 2 Ã¥ and 30 Ã¥; the particles of activated carbon have substantially the same texture, whatever their location in the composite material; the thermal conductivities of the material are between 1 and 100 Wmâˆ’1Kâˆ’1, said process comprising subjecting an activating agent and a mixture of expanded graphite and an activated carbon precursor to a heat treatment at a temperature and for a time sufficient to produce a burn off of the activated carbon precursor of between 5 and 70% by mass.