公开(公告)号：US10376865B2

公开(公告)日：2019-08-13

申请号：US15795866

申请日：2017-10-27

Applicant: Korea University Research and Business Foundation

Inventor： Kwan-Young Lee ,  Chan Hun Kim ,  Gwang-Sik Jeong ,  Young Gul Hur

IPC: B01J23/30 ,  B01J27/22 ,  B01J35/00 ,  B01J35/02 ,  B01J35/08 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/14 ,  B01J37/16 ,  B01J37/18 ,  C10G47/12

Abstract: Disclosed is a method of synthesizing nano-sized tungsten-silica core-shell particles by a silica-based sol-gel process. According to the method, tungsten-silica nanoparticles are very easy to synthesize by a simple process at ambient pressure and temperature. In addition, tungsten oxide-silica (WOx@SiO2) nanoparticles including tungsten in a stable oxidation state can be synthesized. In the tungsten oxide-silica nanoparticles, the size of the tungsten protected with the silica shell can be maintained in the nanometer range without further processing. Also disclosed is a method of synthesizing nano-sized tungsten oxide (WOx) and tungsten carbide (WC) particles by further processing of the tungsten-silica core-shell particles.

公开(公告)号：US20180178203A1

公开(公告)日：2018-06-28

申请号：US15795866

申请日：2017-10-27

Applicant: Korea University Research and Business Foundation

Inventor： Kwan-Young Lee ,  Chan Hun Kim ,  Gwang-Sik Jeong ,  Young Gul Hur

IPC: B01J27/22 ,  B01J35/00 ,  B01J37/03 ,  B01J37/02 ,  B01J37/16 ,  C10G47/12

CPC classification number: B01J27/22 ,  B01J23/30 ,  B01J35/0013 ,  B01J35/002 ,  B01J35/0073 ,  B01J35/023 ,  B01J35/08 ,  B01J37/0018 ,  B01J37/0236 ,  B01J37/031 ,  B01J37/14 ,  B01J37/16 ,  B01J37/18 ,  C10G47/12

Abstract: Disclosed is a method of synthesizing nano-sized tungsten-silica core-shell particles by a silica-based sol-gel process. According to the method, tungsten-silica nanoparticles are very easy to synthesize by a simple process at ambient pressure and temperature. In addition, tungsten oxide-silica (WOx@SiO2) nanoparticles including tungsten in a stable oxidation state can be synthesized. In the tungsten oxide-silica nanoparticles, the size of the tungsten protected with the silica shell can be maintained in the nanometer range without further processing. Also disclosed is a method of synthesizing nano-sized tungsten oxide (WOx) and tungsten carbide (WC) particles by further processing of the tungsten-silica core-shell particles.