3 research outputs found

    Influence of boehmite intermediate layer as covalent linker on synthesis of LTA zeolite coatings

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    The incorporation of nanostructured materials, such as LTA-type zeolite on the silicon wafers, opens a very interesting door to the use of these materials within silicon based microfabrication technologies. This work studies the deposition and intergrowth of defect-free LTA-type zeolite layer onto 3-inch Silicon wafers with a layer of SiO2 subjected to pretreatment. The main disadvantage associated with zeolite layer synthesis are crack the formation of cracks and difficulty of obtaining a uniform layer. By modifying the supports with boehmite, a substantial improvement was observed in terms of layer continuity and crystal intergrowth in comparrison to coatings prepared on cationic polymer, poly (diallyldimethylammonium chloride). An LTA- type zeolite layer was synthesized in a range of 350 to 1300 nm via hydrothermal ex-situ method at 363 K for 12 h. Tetramethylammonium hydroxide (TMAOH) was used as a template, and aluminum isopropoxide and colloidal silica were used as Al and Si sources, respectively

    Actividades de Ingenieros y su impacto en el Medioambiente: Realizaci贸n y mejora del Plan Contra Incendios en Base y Campo de Maniobras y Tiro

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    Los incendios en los Campos de Tiro y de Maniobras constituyen un grave problema, tanto por los da帽os materiales en bienes, como posibles p茅rdidas en vidas humanas, adem谩s de la posible p茅rdida en la imagen de las FAS. El objetivo principal de este proyecto consiste en implementar un procedimiento para la realizaci贸n de un plan de autoprotecci贸n y defensa contra incendios en los terrenos forestales asignados a las Bases y Campos de Maniobras y Tiro del Ej茅rcito de Tierra, dentro del cual se implican las unidades de ingenieros para labores de protecci贸n, prevenci贸n y extinci贸n
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