Method for the preparation of fine particulate-metal-containing

Details Method for the preparation of fine particulate-metal-containing Method for the preparation of fine particulate-metal-containing

1990-01-11

1991-11-12

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

2041575, 20415741, 2041574, 427 531, C01D 102, B05D 306

Patent

active

050645170

ABSTRACT:
A finely divided metal-containing compound can be efficiently prepared by irradiating a mixed vapor phase of an organometallic compound in a concentration to exceed a specified lower limit and a reactant gaseous compound with laser beams having an incident energy density to exceed a specified lower limit. When the reactant gaseous compound in the vapor phase is an oxygen-containing compound, e.g., air, the resultant powdery product is an oxide of the metallic element of the organometallic compound. When the reactant gaseous compound in the vapor phase is a halogen-containing compound, e.g., methyl halides, the resultant powdery product is a halide of the metallic element of the organometallic compound. When the reactant gaseous compound is a second organometallic compound, of which the metallic element is not the same as the metallic element in the first organometallic compound, the resultant powdery product is a composite metallic powder of which the distribution of the two metallic elements is uniform throughout each particle. No particles of either one of the metallic elements alone are contained in the powder as evidenced by the EPMA analysis.

REFERENCES:
patent: 4668647 (1987-05-01), Rice
patent: 4687753 (1987-08-01), Fiato
patent: 4689129 (1987-08-01), Knudsen
patent: 4844736 (1989-07-01), Shimo et al.

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