CATALYSTS

摘要

A method of preparing a modified catalyst support comprises preparing a titanium-containing catalyst support material by (i) contacting a catalyst support material with an organic titanium compound, or (ii) co-hydrolysing a hydrolysable organic titanium compound and AI(OR″)3, with the titanium-containing catalyst support material then including Al, wherein all R″ are the same or different and are each an organic group. The titanium-containing catalyst support material is calcined at a temperature above 900° C. to obtain a modified catalyst support which includes more than 1 wt % and less than 3.5 wt % Ti, based on the mass of the catalyst support material in the modified catalyst support, the Ti being present in the form of one or more titanium compounds.

主权项

1. A method of preparing a modified catalyst support, the method comprising
preparing a titanium-containing catalyst support material by (i) contacting a catalyst support material with an organic titanium compound, wherein the catalyst support material is selected from the group consisting of (a) a catalyst support precursor comprising an aluminium compound which, upon calcination, converts to a catalyst support in the form of one or more aluminium oxides, and (b) a catalyst support being alumina in the form of one or more aluminium oxides, or (ii) co-hydrolysing a hydrolysable organic titanium compound and Al(OR″)3, with the titanium-containing catalyst support material then including Al,
wherein all R″ are the same or different and are each an organic group; and calcining the titanium-containing catalyst support material at a temperature above 900° C. to obtain a modified catalyst support which includes more than 1 wt % and less than 3.5 wt % Ti, based on the mass of the catalyst support material in the modified catalyst support, the Ti being present in the form of one or more titanium compounds.