Title:
A manufacturing method of TiO2 composite porous silica photocatalyst particles, and TiO2 composite porous silica photocatalyst particles
Document Type and Number:
Japanese Patent JP6188185
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a production method that can efficiently produce a TiOcomposite porous silica photocatalyst particle under the formation conditions of a short period of time and a low temperature and to provide the TiOcomposite silica photocatalyst particle.SOLUTION: The method for producing a TiOcomposite porous silica photocatalyst particle includes: a step of adding a triblock copolymer to a strongly acidic aqueous solution of mineral acid and dissolving the triblock copolymer in the solution; a step of adding a TiOsol having TiOnanoparticles dispersed in an organic solvent with use of an organic dispersant; a step of mixing with a water glass aqueous solution; a step of stirring the water glass mixed liquid under the temperature condition of 25-40°C for 1-6 hours to form a precursor particle; and a step of calcining the precursor particle separated from the water glass mixed liquid under the temperature condition of 400-1,000°C for 0.5-6 hours and removing the triblock copolymer from the precursor particle to form the TiOcomposite porous silica photocatalyst particle.
Inventors:
Katsunori Kosuga
Nobuaki Negishi
Taizo Sano
Motoo Sunaga
Hiroshi Isobe
Yutaka Onodera
Nobuaki Negishi
Taizo Sano
Motoo Sunaga
Hiroshi Isobe
Yutaka Onodera
Application Number:
JP2012168075A
Publication Date:
August 30, 2017
Filing Date:
July 30, 2012
Export Citation:
Assignee:
National Institute of Advanced Industrial Science and Technology
Fuji Chemical Co., Ltd.
Fuji Chemical Co., Ltd.
International Classes:
B01J21/06; B01J35/02; B01J35/10; B01J37/04; B01J37/08
Domestic Patent References:
| JP2009131760A | ||||
| JP2004197064A | ||||
| JP2004143026A | ||||
| JP10277400A |
Attorney, Agent or Firm:
Shin Shioda