POLYMERIZATION CATALYSTS FOR ETHYLENE. PART I. RARE EARTH OXIDES

Journal Article · Fri Apr 01 04:00:00 EST 1960 · J. Polymer Sci.

DOI:https://doi.org/10.1002/pol.1960.1204314231· OSTI ID:4172871

Brown, C P; Saunders, J

The possibility of using rare earth oxides as catalysts for the polymerization of ethylene was investigated and found to be promising. The rare earth oxides studied were those of Ce, Nd, Sm, Gd, Dy, Er, and Yb; monazite sand was also included. The catalyst was prepared by supporting the oxide on gamma - alumina and activating with heat. Lithium aluminum hydride was introduced into the polymerizations as activator and scavenger. The oxides of Dy and Yb were found to be the most effective catalysts, followed by those of Nd and Gd; cerium oxide was ineffective. Rare earth oxide-transition metal oxide catalyst mixture were tried and found to be less effective than either oxide alone. None of the above catalysts induced the polymerization of propylene, acrylamide, acrylonitrile, vinyl acetate, or methyl methacrylate. (D.L.C.)

• Research Organization: British Nylon Spinners Ltd., Pontypool, Mon., Eng.
• NSA Number: NSA-14-013676
• OSTI ID: 4172871
• Journal Information: J. Polymer Sci., Journal Name: J. Polymer Sci. Vol. Vol: 43
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACETATES
ALUMINUM HYDRIDES
ALUMINUM OXIDES
AMIDES
CATALYSIS
CERIUM
CHEMISTRY
DYSPROSIUM
ERBIUM
ETHYLENE
GADOLINIUM
HEATING
LITHIUM HYDRIDES
METHACRYLATES
MONAZITES
NEODYMIUM
ORGANIC NITROGEN COMPOUNDS
OXIDES
POLYMERIZATION
PREPARATION
PROPYLENE
RARE EARTHS
SAMARIUM
SAND
TRANSITION METALS
USES
VINYL RADICALS
YTTERBIUM