Co Reduced chromyl halide on silica catalyst

Details Co Reduced chromyl halide on silica catalyst Co Reduced chromyl halide on silica catalyst

1982-08-05

1984-03-27

Garvin, Patrick

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

Catalyst or precursor therefor

Halogen or compound containing same

526106, C08F 424

Patent

active

044395434

ABSTRACT:
A silica composition is calcined at a temperature high enough to remove some but not all of the hydroxyl content. Generally temperatures of at least 400.degree. C. are required and temperatures above 1000.degree. C. are undesirable, the most preferred temperature being about 600.degree.-800.degree. C. The thus calcined silica is then treated with chromyl chloride at an elevated temperature and finally given a treatment in a carbon monoxide ambient. While the final composition contains chlorine which is normally considered a catalyst poison, the material is surprisingly active as an olefin polymerization catalyst.

REFERENCES:
patent: 3346511 (1967-10-01), Hill
patent: 3412040 (1968-11-01), Saccardo et al.
patent: 3535297 (1970-10-01), Carrick et al.
patent: 4248735 (1981-02-01), McDaniel et al.
patent: 4252928 (1981-02-01), Eve

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