Compositions – Compositions containing a single chemical reactant or plural... – Inorganic reactant other than sulfur containing
Reexamination Certificate
2008-11-13
2011-12-06
Choi, Ling (Department: 1761)
Compositions
Compositions containing a single chemical reactant or plural...
Inorganic reactant other than sulfur containing
C252S520200, C252S521300, C524S001000, C524S080000, C524S081000, C523S527000
Reexamination Certificate
active
08070981
ABSTRACT:
Provided is a method of fabricating silica-titania nanoporous composite powder by controlling a pore size. In more particular, a method of fabricating silica-titania nanoporous composite powder, using a spraying and heating reactor including an ultrasonic droplet generator and a cylindrical electric furnace, comprises the steps of: generating droplets of a mixture suspension from a colloidal suspension prepared by mixing silica (SiO2) and titania (TiO2) nanopowders and organic template (PSL: polystyrene latex) powder, by the ultrasonic droplet generator of the spray-heating reactor; generating a silica-titania-organic template nanoporous composite powder having pores within the range of 20˜100 nm in size through preparing silica-titania-organic template (SiO2—TiO2-PLS) composite particles and removing the organic template while passing the mixture suspension in the cylindrical electric furnace by a carrier gas; and collecting the generated nanoporous material by a particle collector.
REFERENCES:
patent: 2009/0000651 (2009-01-01), Qiao
patent: WO 2009/016143 (2009-02-01), None
patent: WO 2009/032988 (2009-03-01), None
Gi-Ra Ti, Ordered Macroporous Particles by Colloidal Templating May 24, 2004, Chem. Mater. 2001, 13, 2613-2618.
Chang Han Kwon
Jang Hee Dong
Choi Ling
Jenkins Wilson Taylor & Hunt, P.A.
Korea Institute of Geoscience and Mineral Resources
Peets Monique
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