Use of hollow glass spheres in conjunction with rehydratable alu

Details Use of hollow glass spheres in conjunction with rehydratable alu Use of hollow glass spheres in conjunction with rehydratable alu

1980-08-22

1981-09-29

Shine, Wm. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252448, 252477R, B01J 2104, B01J 3508

Patent

active

042922062

ABSTRACT:
For making low density alumina or silica-alumina beads as catalyst support particles for auto-exhaust catalysts, hollow glass spheres of very small diameter are incorporated in the alumina powder mix before it is formed into beads and calcined. The beads may be finished with a surface coat of alumina without the microspheres to improve resistance to abrasion. Preferred beads are made with rehydratable alumina powder.

REFERENCES:
patent: 3923688 (1975-12-01), Hammel et al.
patent: 4179408 (1979-12-01), Sanchez et al.

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