A method of preparing a catalyst comprising contacting a support with a trivalent titanium compound and a chromium-containing compound. A catalyst composition comprising a support, chromium, and titanium, wherein the titanium is derived from TiCl.sub.3, Ti.sub.2(SO.sub.4).sub.3, Ti(OAc).sub.3, Ti(+3) oxylate, Ti(NO.sub.3).sub.3, Ti(+3) lactate or combinations thereof.

 
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