Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1996-08-27
1997-12-30
Caldarola, Glenn
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502343, 502328, 502329, 502349, B01J 2306, B01J 2106
Patent
active
057030022
ABSTRACT:
Photocatalyst particles consist essentially of a matrix consisting of the crystal phase of a semiconducting metal oxide as a photocatalyst and ferromagnetic metal particles dispersed in the matrix, having an average particle diameter of 15 nm at most and a specific surface area of 100 m.sup.2 /g at least, and permitting recovery by a magnetic force. A method for the production of the photocatalyst particles consists essentially of dispersing water in a hydrophobic organic solvent containing a surfactant thereby forming a microemulsion, adding to the microemulsion a raw material for the formation of the crystal phase of a semiconducting metal oxide as a photocatalyst and a raw material for the formation of ferromagnetic metal particles, causing the raw materials contained in the mixture resulting from the preceding step to undergo hydrolysis and inducing precipitation of the hydroxide and oxide thereof in the resultant mixture, separating the precipitates from the resultant mixture, and heat-treating the separated precipitates under a reducing condition.
REFERENCES:
patent: 4579594 (1986-04-01), Nanao et al.
patent: 4695393 (1987-09-01), Whitehead et al.
patent: 5145719 (1992-09-01), Towata et al.
patent: 5190841 (1993-03-01), Saha et al.
patent: 5541096 (1996-07-01), Nomura et al.
Shinri Sato. "Photodecomposition of Water Over Pt/TiO.sub.2 and NiO.sub.2 /TiO.sub.2 ", Journal of the Chemical Society of Japan, No. 8, (pp. 1182-1187), 1988. (With English Abstract) (no month).
Sando Mutsuo
Towata Atsuya
Agency of Industrial Science & Technology, Ministry of Internati
Caldarola Glenn
Preisch Nadine
LandOfFree
Photocatalyst particles containing ferromagnetic metal particles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photocatalyst particles containing ferromagnetic metal particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photocatalyst particles containing ferromagnetic metal particles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-202024