Газопроницаемость анодированных оксидно-алюминиевых мембран со слоем палладий-рутениевого сплава

Compositions with a layer of palladium-ruthenium alloy 0.2 μm thick on thermally stable and chemically resistant membranes from polycrystal aluminium gamma-oxide covered by tantalum layer, permeable only for hydrogen, have been prepared. Permeability of hydrogen, nitrogen, argon and helium through initial amorphous and polycrystal membranes, as well as through membranes covered by the layers of tantalum tantalum and palladium-ruthenium alloy has been studied. Membranes permeable solely for hydrogen and applicable for isolation of special-purity hydrogen from hot industrial gases and fit for use in membrane reactors of selective hydrogenation have been obtained. 10 refs., 5 fig

Gas permeability of anodized alumina membranes with a palladium-ruthenium alloy layer

Compositions with a palladium-ruthenium alloy layer 0.2 μm thick on thermostable and chemically stable membranes made from polycrystalline γ-alumina covered with a tantalum layer permeable only to hydrogen are obtained. The permeability of hydrogen, nitrogen, argon, and helium through the initial amorphous and polycrystalline membranes and also through those covered with layers of tantalum, a tantalum and palladium-ruthenium alloy, is studied. Membranes permeable only to hydrogen and applicable to the separation of high-purity hydrogen from hot industrial gases and in membrane reactors of selective hydrogenation are obtained

Synthesis of 5-azolyl-2,4-dihydro-3H-1,2,4-triazole-3-thiones and 5-azolyl-1,3,4-thiadiazol-2-amines based on derivatives of 5-arylisoxazole-3-carboxylic and 4,5-dichloroisothiazole-3-carboxylic acids

[Figure not available: see fulltext.] 2-Mercapto-1,3,4-triazoles and 2-amino-1,3,4-thiadiazoles were synthesized by successive transformations of 5-arylisoxazole- and 4,5-dichloroisothiazole-3-carboxylic acids and their derivatives. The amino group of 5-(4,5-dichloroisothiazol-3-yl)-1,3,4-thiadiazol-2-amine was acylated with 5-phenylisoxazole-3-carboxylic acid chloride. Simple approaches to the preparation of previously unknown heterocyclic assemblies containing two or three azole rings with a high potential for biological activity are described. © 2021, Springer Science+Business Media, LLC, part of Springer Nature

Gas permeability of anodized alumina membranes with a palladium-ruthenium alloy layer

Compositions with a palladium-ruthenium alloy layer 0.2 μm thick on thermostable and chemically stable membranes made from polycrystalline γ-alumina covered with a tantalum layer permeable only to hydrogen are obtained. The permeability of hydrogen, nitrogen, argon, and helium through the initial amorphous and polycrystalline membranes and also through those covered with layers of tantalum, a tantalum and palladium-ruthenium alloy, is studied. Membranes permeable only to hydrogen and applicable to the separation of high-purity hydrogen from hot industrial gases and in membrane reactors of selective hydrogenation are obtained

Газопроницаемость анодированных оксидно-алюминиевых мембран со слоем палладий-рутениевого сплава

Compositions with a layer of palladium-ruthenium alloy 0.2 μm thick on thermally stable and chemically resistant membranes from polycrystal aluminium gamma-oxide covered by tantalum layer, permeable only for hydrogen, have been prepared. Permeability of hydrogen, nitrogen, argon and helium through initial amorphous and polycrystal membranes, as well as through membranes covered by the layers of tantalum tantalum and palladium-ruthenium alloy has been studied. Membranes permeable solely for hydrogen and applicable for isolation of special-purity hydrogen from hot industrial gases and fit for use in membrane reactors of selective hydrogenation have been obtained. 10 refs., 5 fig