Process for preparing abrasion-resistant coated catalysts

Details Process for preparing abrasion-resistant coated catalysts Process for preparing abrasion-resistant coated catalysts

1985-02-26

1986-11-04

Metz, Andrew H.

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

Stabilized

Abrasion resistance

502178, 502211, 502212, 502305, 502308, 502310, 502312, 427213, 427215, B01J 27224, B01J 2719, B01J 27192, B01J 2300

Patent

active

046210725

ABSTRACT:
A process is disclosed for preparing coated catalysts, inter alia, for gas phase oxidations in organic chemistry, comprised of an inert support and a coating of catalyst material enclosing this support, wherein a suspension of the starting material for the coating is sprayed onto an agitated bed of the support, while the suspending medium is being partially removed by a gas stream, and the raw material is then dried and heat-treated. For this purpose, the support bed is mechanically agitated and loosened by a gas stream blown in from below. The catalyst precursor containing a binder and, if appropriate, a pore-former is sprayed in an increasing amount from above onto the bed, the ratio between suspending medium sprayed on and drawn off remaining about constant. The thermal expansion coefficient of the precursor as a dry powder must not deviate by more than 15% from that of the support. The applied coating is densified by continuing the mechanical and fluidizing mixing motion, the material is then dried in a continuing gas stream and heat-treated, if appropriate after decomposition of an added pore-former.

REFERENCES:
patent: 2741602 (1956-04-01), McKinley et al.
patent: 3231518 (1966-01-01), Church
patent: 3232977 (1966-02-01), Konig et al.
patent: 4305843 (1981-12-01), Krabetz et al.
Anlage fur Filmcoating Pharmazeutischer Produkte Ernst, Exhibit 2 of instant file, Sonderdruch Aus., Die Chemische Produktion.

Affiliated with

Also associated with

Rating

Process for preparing abrasion-resistant coated catalysts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing abrasion-resistant coated catalysts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing abrasion-resistant coated catalysts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-697186