Process for preparing cordierite

Details Process for preparing cordierite Process for preparing cordierite

1990-10-31

1992-02-18

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501 12, 501128, 501153, 423329, 423331, 423528, 423600, C04B 3502, C03C 1008

Patent

active

050894560

ABSTRACT:
A process for preparing a cordierite, which includes dissolving a silicon compound, an aluminum compound and a magnesium compound in a molar ratio of 1:0.7 to 1:0.3 to 0.5 in a complexing agent represented by the formula R(OCH.sub.2 CH.sub.2).sub.n OH, wherein R is an alkyl group and n is an integer of 1 to 4; heating the resulting solution to bring about a ligand exchange reaction of the silicon compound, aluminum compound and magnesium compound with the complexing agent; conducting hydrolysis to form a gel; drying the gel and sintering the dried gel at 800.degree. to 1450.degree. C.

REFERENCES:
patent: 4888314 (1989-12-01), Bernier et al.
patent: 4898842 (1990-02-01), David
Suzuki et al, Journal of Ceramic Society of Japan, "Preparation of Cordierite Ceramics from Metal Alkoxides (Part I)", vol. 95, pp. 163-169 (1987).
Suzuki et al, Journal of Ceramic Society of Japan, "Preparation of Cordierite Ceramics from Metal Alkoxides (Part II)", vol. 95, pp. 170-175 (1987).
Pouxviel et al, Journal of Non-Crystalline Solids, "NMR Study of the Sol/Gel Polymerization", vol. 89, pp. 345-360 (1987).

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