Porous cordierite ceramics, a process for producing same and use

Details Porous cordierite ceramics, a process for producing same and use Porous cordierite ceramics, a process for producing same and use

1985-04-23

1987-10-06

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

501 33, 501 39, 501 84, 501 85, 501119, 502527, C03C 1008, C03C 1200, C04B 3806

Patent

active

046983171

ABSTRACT:
New type porous cordierite ceramics having a new characteristic interconnecting open cellular structure and a hollow microspherical cordierite glass powder with a shell devoid of any pores or provided with a few or an abundance of open pores which is used as a starting material for the porous cordierite ceramics. The porous cordierite ceramics are produced by subjecting a starting solution containing an alkyl silicate, an aluminum salt and an magnesium salt optionally with other compounds in an organic or aqueous organic solvent to spray thermal decomposition to prepare the hollow microspherical cordierite glass powder, and then processing the cordierite glass powder to a shaped body after or before an optional heat treatment and firing the shaped body at a temperature below the melting point of cordierite. The porous cordierite ceramics are useful as a carrier for gas chromatography or various chemical reactions.

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McCarthy, G. J. et al., "Gel Route to Homogeneous Glass Preparation: II, Gelling and Desiccation"--J. Am. Cer. Soc., 54(12) 1971, pp. 639-640.

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