公开(公告)号：US09994488B2

公开(公告)日：2018-06-12

申请号：US15146204

申请日：2016-05-04

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seong Mu Jo ,  Dong Young Kim ,  Sung-Yeon Jang ,  Jeong Joo Choo

IPC: C04B35/76 ,  B01D39/20 ,  C04B35/622 ,  D01D5/00 ,  B01D67/00 ,  B01D69/10 ,  B01D69/14 ,  B01D71/02 ,  B82Y30/00 ,  C04B35/624 ,  C04B35/626 ,  C04B35/628 ,  C04B35/634

CPC classification number: C04B35/76 ,  B01D39/2079 ,  B01D39/2082 ,  B01D39/2089 ,  B01D67/0041 ,  B01D69/10 ,  B01D69/141 ,  B01D71/024 ,  B01D71/025 ,  B01D2239/025 ,  B01D2239/0258 ,  B01D2239/0478 ,  B01D2239/086 ,  B01D2239/1216 ,  B01D2239/1225 ,  B01D2323/39 ,  B82Y30/00 ,  C04B35/62236 ,  C04B35/6224 ,  C04B35/62245 ,  C04B35/624 ,  C04B35/6264 ,  C04B35/62813 ,  C04B35/62892 ,  C04B35/63444 ,  C04B2235/3218 ,  C04B2235/441 ,  C04B2235/443 ,  C04B2235/5228 ,  C04B2235/5252 ,  C04B2235/5264 ,  C04B2235/5268 ,  C04B2235/5296 ,  D01D5/0007 ,  D10B2101/08 ,  D10B2505/04

Abstract: An ultrafine continuous fibrous ceramic filter, which comprises a filtering layer of a fibrous porous body, wherein the fibrous porous body comprises continuous ultrafine fibers of metal oxide which are randomly arranged and layered, and powdery nano-alumina incorporated into the ultrafine fibers or coated thereon, the ultrafine fibers being obtained by electrospinning a spinning solution comprising a metal oxide precursor sol-gel solution, and optionally, a polymer resin, and sintering the electrospun fibers, in which the ultrafine fibers have an average diameter of 10˜500 nm, and the fibrous porous body has a pore size of maximum frequency ranging from 0.05 to 2 μm, exhibits high filtration efficiency at a high flow rate, and can be regenerated.