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US 12,312,244 B2Granted
Method for manufacture of mesoporous silica in the presence of thermally expandable microcells
AssigneeSaudi Arabian Oil Company
InventorsRobert Peter Hodgkins, Omer Refa Koseoglu
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Abstract
Methods of synthesis of mesoporous silica are disclosed. The mesoporous silica synthesized herein, like SBA-15, possesses a two-dimensional, hexagonal, through-hole structure with a space group p6mm. An effective quantity of one or more thermally expandable microcells are used during synthesis to impart distinct characteristics.
Claims12
A method for the sol-gel synthesis of mesoporous silica having hexagonal p6mm symmetry, the method comprising:
- mixing in an acid aqueous medium under conditions conducive to promote hydrolysis reactions effective quantities of
- a surfactant as a soft template material to influence a silica mesoporous structure,
- thermally expandable microcells, and
- a silica source;
- heating the mixture under conditions and for a time effective conducive to promote condensation reactions and to form mesoporous silica as a precipitate suspended in a supernatant as an intermediate suspension;
- and
- recovering the mesoporous silica from the intermediate suspension.
4 more elements
Dependencies are inferred from the claim text.