AU1998088129 Silicon carbide foam with high specific surface area and improved mechanical properties

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Application Number 88129/98

Application Date 20.07.1998

Publication Number 1998088129

Publication Date 15.04.1999

Publication Kind A

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CPC

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Applicants Centre National De La Recherche Scientifique

Inventors Ollivier, Benoist
Prin, Marie

Agents Spruson & Ferguson

Priority Data 9709743 25.07.1997 FR

Title

(EN) Silicon carbide foam with high specific surface area and improved mechanical properties

Abstract

(EN) The invention concerns a silicon carbide foam for use as a catalyst support, with high specific surface area of at least 5 m²/g and improved mechanical properties, in particular compressive strength more than 0.2 MPa's; it is obtained by impregnating an organic foam with a silicon suspension in a resin to which a hardening agent has been added, incomplete cross-linking of the resin, carbonising the organic foam and the resin and carburizing the silicon.

B	PERFORMING OPERATIONS; TRANSPORTING
01	PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
27	Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
20	Carbon compounds
22	Carbides
224	Silicon carbide

B	PERFORMING OPERATIONS; TRANSPORTING
01	PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35	Catalysts, in general, characterised by their form or physical properties
02	Solids
10	characterised by their surface properties or porosity

C	CHEMISTRY; METALLURGY
04	CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B	LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
38	Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof

B	PERFORMING OPERATIONS; TRANSPORTING
01	PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
27	Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
20	Carbon compounds
22	Carbides
224	Silicon carbide

B	PERFORMING OPERATIONS; TRANSPORTING
01	PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35	Catalysts, in general, characterised by their form or physical properties
02	Solids
10	characterised by their surface properties or porosity

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1. AU1998088129 - Silicon carbide foam with high specific surface area and improved mechanical properties

C	CHEMISTRY; METALLURGY
04	CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B	LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
38	Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
0022	obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors