Method of preparing metallic nanoparticles and materials...

Details Method of preparing metallic nanoparticles and materials... Method of preparing metallic nanoparticles and materials...

2011-03-22

2011-03-22

Wood, Elizabeth D (Department: 1732)

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

Zeolite or clay, including gallium analogs

Clay

C502S074000, C502S081000, C502S084000, C502S085000, C502S087000, C502S258000, C977S773000, C977S775000

Reexamination Certificate

active

07910511

ABSTRACT:
The invention relates to a method of preparing metallic nanoparticles and to the materials thus obtained. More specifically, the invention relates to a method of preparing metallic nanoparticles consisting in: selecting a precursor from the salts, hydroxides and oxides of metallic elements that can be reduced at temperatures below the clay silicate network destruction temperature; and depositing said precursor on a support selected from pseudolaminar phyllosilicate clays. According to the invention the method comprises: (i) a deposition step in which the precursor is deposited on the support: (ii) when the precursor is selected from among salts and hydroxides, a thermal decomposition step in a controlled atmosphere, in which the precursor is subjected to a decomposition process and is transformed into an oxide of the metallic element: and (iii) a reduction step in which the oxide of the metallic element is subjected to a reduction process in a controlled atmosphere. The aforementioned method is performed at temperatures below the clay silicate network destruction temperature.

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