Porous sepiolite, process for producing same and adsorptive deco

Details Porous sepiolite, process for producing same and adsorptive deco Porous sepiolite, process for producing same and adsorptive deco

1991-06-27

1994-04-12

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Pore-forming

501108, 501122, C04B 3800

Patent

active

053025580

ABSTRACT:
Disclosed is a porous sepiolite having an improved water-resistance and thermal shock resistance obtained by grinding, moisture-conditioning and molding sepiolite, and then calcining said molded sepiolite at a temperature in the range of about 650.degree. C. to about 800.degree. C. Also disclosed is a porous sepiolite having a large specific surface area, wherein the pores having a pore diameter of 50 angstroms or less have a specific surface area in the range of from 40 to 200 m.sup.2 /g and in which no less than 20% of the total surface of the sepiolite is occupied with the pores having a pore diameter of 50 angstroms or less and wherein the pore distribution curve of the sepiolite has a main peak at a pore diameter of no more than 50 angstroms. This sepiolite is obtained by grinding, moisture-conditioning and molding sepiolite, calcining the same at a temperature in the range of about 650.degree. to about 800.degree. C., and then subjecting said calcined sepiolite to an acid treatment.

REFERENCES:
Muronaka et al. "Hydrogenation of Pitch Like Material" (Feb. 23, 1983) JP 57-198788 (Japanese Patent Abstract).
Ono et al. "Catalyst Composition for Hydrogenating Heavy Hydrocarbonic Oil" (Feb. 26, 1986) Japan JP 60-193540 (Japanese Patent Abstract).
Fujitani et al. "Catalyst For Synthesizing Hydrocarbon" (Oct. 3, 1986). Japan JP 61-111140 (Japanese Patent Abstract).
Umezawa et al. "Special Porous Composite" (Aug. 24, 1988) Japan JP 63-80846 (Japanese Patent Abstract).
Shiba et al. "Bituminous vib. Damping Material which is applied by Coating for Automobile" JP 03-277674 (Japanese Patent Abstract).

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