Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1987-12-17
1989-05-09
Shine, W. J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
549534, B01J 2104, B01J 2304, B01J 2350
Patent
active
048290432
ABSTRACT:
A silver catalyst containing lithium and cesium as promoters for the direct oxidation of ethylene with oxygen to give ethylene oxide is applied to a porous carrier and essentially consists of .alpha.-alumina and contains certain amounts of soluble calcium, aluminum, potassium and sodium salts. The carrier has a BET surface area of from 0.4 to 0.8 m.sup.2 /g, a pore volume of not less than 0.45 ml/g, the pores being equally accessible to cold and warm water, a bulk density of less than 700 kg/m.sup.3 and a shape which, in the reactor, provides a geometrical surface area of not less than 600 m.sup.2 /m.sup.3, on which more than 13% by weight of silver are applied as active component and more than 115 kg of silver are available per m.sup.3 of reactor, and from 100 to 300 ppm by weight of lithium and from 200 to 600 ppm by weight of cesium are present as promoters. A process for the preparation of the silver catalyst and its use for the oxidation of ethylene are described.
REFERENCES:
patent: 2294383 (1942-09-01), Carter
patent: 3172893 (1965-03-01), Ameen
patent: 3423328 (1969-01-01), Keith et al.
patent: 3725307 (1973-04-01), Brown et al.
patent: 3962136 (1976-06-01), Nielsen et al.
patent: 4010115 (1977-03-01), Nielsen et al.
patent: 4012425 (1977-03-01), Nielsen et al.
patent: 4033903 (1977-07-01), Maxwell
patent: 4102820 (1978-07-01), Cavitt
patent: 4206128 (1980-06-01), Cavitt
patent: 4321206 (1982-03-01), Cavitt
patent: 4324699 (1982-04-01), Mross et al.
patent: 4356312 (1982-10-01), Nielsen et al.
patent: 4368144 (1983-01-01), Mitsuhata et al.
patent: 4663303 (1987-05-01), Becker et al.
patent: 4690913 (1987-09-01), Nojori et al.
patent: 4740493 (1988-04-01), Boehning et al.
Becker Hans-Juergen
Boehning Karl-Heinz
Mross Wolf D.
Plueckhan Juergen
Renner Klaus-Christian
BASF - Aktiengesellschaft
Shine W. J.
LandOfFree
Silver catalyst and a process for its preparation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Silver catalyst and a process for its preparation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silver catalyst and a process for its preparation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-90189