Porpous, fine inorganic particles
AssigneeAsani Kasei Kabushiki Kaisha
InventorsSeiji Satou, Yasuhide Isobe, Kenzou Onizuka
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Abstract
The present invention provides an amorphous porous inorganic substance having small particle sizes and uniform pores, a process for synthesizing the same, and use of the same. The invention provides an amorphous porous inorganic substance having pores of a uniform pore diameter, which has an average particle size DL of 10 to 400 nm as measured by a dynamic light scattering method and a specific surface area difference, SB−SL, between a conversion specific surface area SL calculated from DL and a nitrogen adsorption specific surface area SB obtained by the BET method, of 250 m2/g or more. A process for synthesizing the same and use of the same are also disclosed.
Claims14
A porous substance comprising inorganic particles which are amorphous and have pores of a uniform diameter,
- wherein said particles have an average particle size DL of 10 to 400 nm as measured by a dynamic light scattering method, and
- wherein said porous substance has a specific surface area difference, SB−SL, between a conversion specific surface area SL calculated from DL and a nitrogen adsorption specific surface area of the particles SB obtained by the BET method, of 250 m2/g or more.
A porous substance sol comprising inorganic particles which are amorphous and have uniform pores and which are produced by a process comprising the steps of:
- mixing a metal source comprising a metal oxide and/or a precursor thereof, a template, and water to prepare a metal oxide/template composite sol;
- and
- removing the template from the composite.
Dependencies are inferred from the claim text.