Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1977-06-07
1978-08-08
O'Keefe, Veronica
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252455Z, 252463, 260677A, B01J 2900, B01J 2906, B01J 2100
Patent
active
041055888
ABSTRACT:
Process for the purification of olefins by removing oxygen and acetylene from them which comprises passing the olefins over a contact material consisting essentially of a metallic element from the first B group of the period system which element is homogeneously and finely dispersed on a carrier selected from zeolites, spheroidal alumina, silica gel, Kieselghur or colloidal silica stabilized in an aqueous suspension. The purification process is carried out at temperatures of from -50 to 50.degree. C. under pressures of from 0.01 to 60 atmospheres. The contact material is prepared by mixing a suitable compound of the metallic element such as a carbonate or ammonia complex with the selected carrier, thereafter atomizing the mixture to obtain microspheroids, granulating the spheroids into the desired shape and size and finally subjecting the carrier material to a reducing treatment to obtain the metallic element thereon. The contact material for the purification preferably utilizes the element copper with the contact material having the size of 1-250.mu. and is most suitably used in the purification of ethylene.
REFERENCES:
patent: 3676516 (1972-07-01), Haskell et al.
patent: 3720604 (1973-03-01), Rosback
Balducci Agostino
Corbellini Margherita
Mormino Vittorio
Notari Bruno
Rivola Luigi
O'Keefe Veronica
Snam Progetti S.p.A.
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