Zirconia-titania-silica tergels and their use as catalyst...

Details Zirconia-titania-silica tergels and their use as catalyst... Zirconia-titania-silica tergels and their use as catalyst...

C - Chemistry, Metallurgy

01

B

252/39, 402/626

C01B 33/14 (2006.01) B01J 21/06 (2006.01) B01J 21/08 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1243010

ABSTRACT A method of preparing a high pore volume, high surface area zirconia-titania-silica tergel useful as an olefin polymerization or copolymerization catalyst support comprises the steps of coprecipitating hydrous zirconia, hydrous titania and hydrous silica, aging and washing the resulting hydrotergel, removing water from the washed hydrotergel and optionally calcining the resulting xerotergel. Resins with predetermined properties such as high melt index, broad molecular weight distribution, high weight swell, etc. can be produced from catalysts of the chromium or Ziegler type based on these supports.

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