Title:
HOLLOW FIBROUS SILICA AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3869142
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a new technique for producing an inorganic porous material by utilizing a bio-related substance as a mold.
SOLUTION: This method for producing a hollow fibrous silica contains a process removing by holding collagen (preferably collagen of type I) and alkoxysilane (e.g. tetraethoxysilane) in an aqueous solution having neutral pH and added with a salt at a normal temperature, depositing silica on the surface of a collagen fiber, freeze-drying and baking. By the process, a hollow fibrous silica in which a hollow part having 25-50 nm inner diameter inside a cylindrical shape having 50-100 nm outer diameter, especially composed of a bundle of plural hollow silica hollow fibers having about 3 nm inner diameter of the hollow part.
Inventors:
Yoshiyuki Ono
Seiji Shinkai
Seiji Shinkai
Application Number:
JP2134799A
Publication Date:
January 17, 2007
Filing Date:
January 29, 1999
Export Citation:
Assignee:
Japan Science and Technology Agency
Dainippon Ink and Chemicals Co., Ltd.
Dainippon Ink and Chemicals Co., Ltd.
International Classes:
D01F9/08; C01B33/12; (IPC1-7): D01F9/08
Domestic Patent References:
| JP3180513A | ||||
| JP6293574A | ||||
| JP2000203826A | ||||
| JP2001508301A | ||||
| JP3152216A | ||||
| JP11502906A | ||||
| JP51099122A |
Attorney, Agent or Firm:
Satoshi Tsutsui