Methods of preparing a catalyst
AssigneeChevron Phillips Chemical Company LP
InventorsMax P. McDaniel, Eric D. Schwerdtfeger, Jeremy M. Praetorius
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Abstract
A method of preparing a catalyst support comprising contacting an acid-soluble titanium-containing compound with an acid to form a first mixture; contacting the first mixture with an alkali metal silicate to form a hydrogel which has a silica content of from about 18 wt. % to about 35 wt. % based on the total weight of the hydrogel; contacting the hydrogel with an alkaline solution to form an aged hydrogel; washing the aged hydrogel to form a washed hydrogel; and drying the washed hydrogel to produce a titanium-containing-silica support wherein the support has a pore volume equal to or greater than about 1.4 cm3/g.
Claims20
A titanium-containing hydrogel composition comprising:
- a) a hydrogel having a silica content of from 18 wt. % to 35 wt. % based on a total weight of the hydrogel;
- b) water;
- and
- c) titanium.
A hydrogel produced by a reactant composition comprising:
- a) an acid-soluble titanium-containing compound;
- b) an alkali metal silicate;
- c) water;
- and
- d) an acid, and
- having a silica content of from 18 wt. % to 35 wt. % based on a total weight of the hydrogel.
A hydrogel produced by process comprising:
- contacting an acid-soluble titanium-containing compound with an acid to form a first mixture;
- and
- contacting the first mixture with an alkali metal silicate to form the hydrogel having a silica content of from 18 wt. % to 35 wt. % based on a total weight of the hydrogel wherein contacting the first mixture with the alkali metal silicate to form a hydrogel occurs at a pH of less than 4.
A hydrogel produced by a reactant composition comprising:
- a) an acid-soluble titanium-containing compound;
- b) a chromium-containing compound;
- c) an alkali metal silicate;
- d) water;
- and
- e) an acid;
- having a silica content of from 18 wt. % to 35 wt. % based on a total weight of the hydrogel.
Dependencies are inferred from the claim text.