Abstract:
The present invention relates to a process for the conversion of oxygenates to olefins comprising (i) providing a gas stream comprising one or more oxygenates; and (ii) contacting the gas stream with a catalyst; wherein the catalyst comprises a zeolitic material having an MFI, MEL, and/or MWW-type framework structure comprising YO2 and X2O3, wherein Y is a tetravalent element, and X is a trivalent element, said zeolitic material being obtainable and/or obtained according to a method comprising (1) preparing a mixture comprising one or more sources for YO2, one or more sources for X2O3, and one or more solvents; and (2) crystallizing the mixture obtained in step (1) to obtain a zeolitic material having an MFI, MEL and/or MWW-type framework structure; wherein the mixture crystallized in step (2) contains 3 wt.-% or less of the one or more elements M based on 100 wt.-% of YO2, wherein M stands for sodium.
Abstract:
The present invention relates to shaped bodies of compositions comprising a porous aromatic covalent framework polymer, wherein the polymer comprises at least one monomer unit, the at least one monomer unit comprising at least one aromatic ring and the at least one monomer unit having at least three binding sites to adjacent monomer units in the polymer and a core, wherein the at least three binding sites are located on at least one atom of the core and wherein the at least one atom is free of covalent bonds to hydrogen; and at least one binder additive. The invention also relates to methods for the preparation of said shaped bodies and their uses.
Abstract:
Se proporciona un procedimiento para revestir por lo menos parte de una superficie de un soporte con una estructura de metal orgánico poroso que comprende por lo menos un compuesto orgánico, por lo menos bidentado coordinado con por lo menos un ion de metal. El procedimiento comprende los siguientes pasos: (a) aspersión de por lo menos una parte de la superficie de soporte con una primera solución que comprende por lo menos un ion metálico; (b) aspersión de por lo menos una parte de la superficie de soporte con una segunda solución que comprende por lo menos un compuesto orgánico, por lo menos bidentado; en donde el paso (b) se lleva a cabo antes, después o simultáneamente con el paso (a), para formar una capa de la estructura de metal-orgánico poroso.
Abstract:
Provided is a process for coating at least part of a surface of a support with a porous metal-organic framework comprising at least one at least bidentate organic compound coordinated to at least one metal ion. The process comprises the following steps: (a) spraying the at least one part of the support surface with a first solution comprising the at least one metal ion; (b) spraying the at least one part of the support surface with a second solution comprising the at least one at least bidentate organic compound; wherein step (b) is carried out before, after or simultaneously with step (a), to form a layer of the porous metal-organic framework.