Tolsa, S.a.

Consejo Superior De Investigaciones Cientificas

Iberdrola

José Moya Corral

Julio Santarén Romé

Antonio Alvarez Berenguer

Eduardo Aguilar Díez

Antonio Álvarez Berenguer

Francisco Javier Limpo Orozco

Carlos Pecharroman Garcia

Elisa Leonor Román García

José Luis Sacedón Adelantado

Eduardo Santamera Gago

Marcos Díaz Muñoz

Angel Samuel Pérez Ramírez

Begoña Remartínez Zato

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.

Method of preparing metallic nanoparticles and materials thus obtained

The method involves measuring hydrogen permeation in the tubes by mass spectrometry, wherein the tube is inserted into a high or ultrahigh vacuum device in which a mass spectrometer and a total pressure gauge are located. Hor Hand inert gas mixtures are circulated inside the tube at the required partial pressure. The tube is then heated and the appearance of Houtside the tube is observed. The flow thereof inside the tube and emergence time, called permeation time, are determined based on permeation curves. The emergence time of the first microcrack is also determined.

Procedure and device for measuring resistance to hydriding of tubes and tubular claddings

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Madrid, Spain

José Moya Corral