Method for preparing spheroidal alumina

Details Method for preparing spheroidal alumina Method for preparing spheroidal alumina

1983-03-25

1985-09-17

Gantz, D. E.

Catalyst, solid sorbent, or support therefor: product or process

Forming or treating a sphere, process only

502439, 502355, 423626, B01J 3508, B01J 3700

Patent

active

045421137

ABSTRACT:
For the preparation of spheroidal alumina, an alumina sol having a solids content of more than 20 to 40% by weight of alumina is prepared from alumina hydrate, which consists of boehmite/pseudo-boehmite, by thorough stirring in aqueous dilute acid, and the alumina sol is caused in the presence of 1 to 10% by weight of urea to drop into a forming column whose top portion is filled with a liquid hydrocarbon and whose bottom portion is filled with an aqueous solution of ammonia and which is held at room temperature, and the thus formed spheroidal particles are dried and activated. The resultant spheroidal particles may also be subjected to a per se known aging treatment.

REFERENCES:
patent: 2620314 (1952-12-01), Hoekstra
patent: 3027234 (1962-03-01), Michalko
patent: 3600129 (1971-08-01), Vesely et al.
patent: 4179408 (1979-12-01), Sanchez et al.
patent: 4315839 (1982-02-01), Bouge et al.
patent: 4399119 (1983-08-01), Takumi et al.

Affiliated with

Also associated with

Rating

Method for preparing spheroidal alumina does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for preparing spheroidal alumina, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing spheroidal alumina will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-370164