Exxonmobil Research and Engineering Company

Consejo Superior De Investigaciones Cientificas

Forschungszentrum Juelich Gmbh

Universitat Politécnica De Valência

Universidad Politecnia De Valencia

Jose Manuel Serra Alfaro

Avelino Corma Canos

Manuel Moliner Marín

Avelino Corma Canós

Detlev Stoever

Wilhelm Albert Meulenberg

Hans-Peter Buchkremer

Maria Jose Diaz Cabanas

Stefan Baumann

Laura Navarrete Algaba

Vicente Bernardo Vert Belenguer

Rafael Casteñeda Sanchez

Julio Garcia Fayos

Juan Hernández Fenollosa

The invention relates to a catalytic activation layer for use in oxygen-permeable membranes, which can comprise at least one porous structure formed by interconnected ceramic oxide particles that conduct oxygen ions and electronic carriers, where the surface of said particles that is exposed to the pores is covered with nanoparticles made from a catalyst, the composition of which corresponds to the following formula: ABCOwhere: A can be selected from Ti, Zr, Hf, lanthanide metals and combinations thereof; B and C are metals selected from Al, Ga, Y, Se, B, Nb, Ta, V, Mo, W, Re, Mn, Sn, Pr, Sm, Tb, Yb, Lu and combinations of same; and A must always be different from B. 0.01&#x3c;x&#x3c;0.5; 0&#x3c;y&#x3c;0.3.

Catalytic layer and use thereof in oxygen-permeable membranes

A composite membrane for selective gas separation, comprises a layer system having a continuously porous, mechanically stable carrier layer, which has an average pore size in the &#x3bc;m range, further having at least one continuously porous intermediate layer, which is disposed on the carrier layer and has an average pore size in the range of 2 to 200 nm, and further having a gastight functional layer, which is disposed on the intermediate layer and is made of a mixed-conductive material having a maximum layer thickness of 1 &#x3bc;m. The carrier layer comprises a structural ceramic, a metal, or a cermet and has a layer thickness of no more than 1 mm. The intermediate layer is present with a total layer thickness of no more than 100 &#x3bc;m and has an average pore size in the range of 10 to 100 nm. The functional layer comprises a perovskite, a fluorite, or a material having a KNiFstructure, such as LaSrCoFeO(LSCF). The layer thickness of the functional layer is no more than 50 nm, and particularly between 25 and 400 nm. In order to produce this composite membrane, at least one porous intermediate layer is applied onto a continuously porous, mechanically stable carrier layer, which has an average pore size in the &#x3bc;m range, wherein the intermediate layer has an average pore size in the range of 2 to 200 nm. A further gastight, functional layer made of a mixed-conductive material and having a maximum layer thickness of 1 &#x3bc;m is applied onto the intermediate layer.

Oxygen-permeable membrane and method for the production thereof

The invention relates to a microporous crystalline material which is characterised in that it has the following chemical composition in the calcined state: XO:n YO:m GeO, wherein (n+m) is equal to at least 5, X is a trivalent element, Y corresponds to one or more tetravalent elements other than Ge and the Y/Ge ratio is greater than 1. Moreover, in the synthesised form without calcination, said material has an X-ray diffraction pattern in which the main lines thereof are as follows: (1), in which (mf) represents relative intensity of between 80 and 100, 'd' represents relative intensity of between 20 and 40 and 'md' represents relative intensity of between 0 and 20, which is calculated as a percentage with respect to the most intense peak. The invention also relates to the method of preparing said material and the use thereof in the conversion of food products comprising organic compounds.

Microporous crystalline material, zeolite ITQ-33, method of preparation and use

Plural reaction chamber catalytic testing device and method for its use in catalyst testing

Growing community of inventors

Valencia, Spain

Jose Manuel Serra Alfaro