Preparation of catalysts of predetermined pore size distribution

Details Preparation of catalysts of predetermined pore size distribution Preparation of catalysts of predetermined pore size distribution

1976-01-05

1977-04-05

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252465, 252466J, B01J 2104, B01J 2106, B01J 2324, B01J 2374

Patent

active

040161080

ABSTRACT:
A process for the formation of a catalyst of predetermined pore size distribution and pore volume of precipitation and formation of an alumina hydrogel from a solution which contains a hydrous form of alumina, in 1-5 wt. % concentration, and an anion that is soluble in an alkaline solution and forms an aluminum salt, at pH ranging about 8-12, and at temperature ranging about 15.degree. F.-120.degree. F. The alumina hydrogel is separated from the solution and washed in a pore volume extending step by contact with a solution of a water soluble polymer containing from about 2 to about 24 monomer units from the group consisting of (a) polyethylene glycols, (b) polypropylene glycols, and (c) polyethylene amines sufficient to absorb the polymer into the pores of the alumina hydrogel and displace water from the pores until the weight ratio of polymer:alumina within the hydrogel ranges from about 0.5:1 to about 4:1. Metal hydrogenation components, suitably a Group VI-B or Group VIII metal, or both, can be added during the hydrogel formation step (i.e. by cogellation), during the pore volume extending step, or after the alumina is formed, dried and calcined.

REFERENCES:
patent: 3417028 (1968-12-01), Montgomery et al.
patent: 3882049 (1975-05-01), Bertolacini et al.
patent: 3900427 (1975-08-01), Riley et al.

Affiliated with

Also associated with

Rating

Preparation of catalysts of predetermined pore size distribution does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of catalysts of predetermined pore size distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of catalysts of predetermined pore size distribution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2265275