Process for producing Bi 12 MO 20 particles and...

Details Process for producing Bi 12 MO 20 particles and... Process for producing Bi 12 MO 20 particles and...

2006-03-09

2009-08-18

Vanoy, Timothy C (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S349000, C423S326000, C423S594700, C423S618000

Reexamination Certificate

active

07576033

ABSTRACT:
An alkaline solution of an alkali-soluble compound, which is selected from the group consisting of an alkali-soluble silicon compound and an alkali-soluble germanium compound, is prepared. Also, a water-soluble bismuth compound solution is prepared. The alkaline solution and the water-soluble bismuth compound solution are subjected to mixing processing with agitation at a temperature of at least 80° C. by use of a shearing type agitator and are thereby allowed to react with each other. Thus Bi12MO20particles, in which M represents an element selected from the group consisting of Si and Ge, are produced. The produced Bi12MO20particles have small particle diameters and uniform composition.

REFERENCES:
patent: 6773690 (2004-08-01), Noweck et al.
patent: 56005549 (1981-01-01), None
patent: 58151319 (1983-09-01), None
patent: 1773870 (1992-11-01), None
Microtec Nition, “Homogenizer Series: Physcotron.” http:/
ition.com/product/physco—principle.htm and http:/
ition.com/en/products/physcotron.htm. Downloaded from website on Apr. 7, 2009.
Matjaz Valant, et al., “Processing and Dielectric Properties of Sillenite Compounds Bi12MO20−δ(M=Si, Ge, Ti, Pb, Mn, B½P½)”, J. Am. Ceram, Soc., 2001, pp. 2900-2904, vol. 84, No. 12.
H.S. Horowitz, et al., “Solution Synthesis and Characterization of Sillenite Phases, Bi24M2O40(M=Si, Ge, V, As, P)”, Solid State Ionics, 1989, pp. 678-690, 32/33.

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