Abstract:
The present invention relates to a porous organometallic framework material comprising a bidentate organic compound bound coordinatively to a metal ion, where the metal ion is Al3+ and the bidentate compound is 2,6-naphthalenedicarboxylate. The invention further relates to moldings comprising such a framework material, to processes for producing the framework material and to the use of the framework material or of the proposed molding.
Abstract:
The present invention relates to a process for the preparation of polyalkylene carbonate, an alternating copolymer, obtainable from the ring opening of an alkene oxide or an alkene oxide precursor in the presence of carbon dioxide or any substance delivering carbon oxide, in the presence of at least one catalyst containing a metal-organic framework material, wherein said framework material comprises pores and a metal ion and an at least bidentate organic compound, said bidentate organic compound being coordinately bound to the metal ion.
Abstract:
The present invention provides a process for the epoxidation of propene which comprises reacting propene with hydrogen peroxide in the presence of methanol as solvent and a titanium zeolite catalyst, the process further comprising separating propylene oxide from the reaction mixture to obtain a mixture comprising methanol, water, at least one carboxylic acid and at least one carbonyl compound, wherein the at least one carboxylic acid is at least partially neutralized, said process optionally comprising a hydrogenation stage.
Abstract:
The invention relates to a method for concentrating an at least partially crystalline solid containing at least one zeolite in a mixture, said mixture containing at least one auxiliary agent, for example a template compound, and the cited solid. The inventive method is characterised in that the mixture is divided into a retentate and a permeate in one step (II) by means of ultrafiltration, the solid content in the retentate being higher than that in the mixture and the solid content in the permeate being lower than that in the mixture. Said method enables auxiliary agents in the permeate, especially template compounds, to be redirected into a crystallisation step (I) which precedes the cited step (II).
Abstract:
The invention relates to a porous organo-metallic skeleton material for accommodating at least one substance. The skeleton material contains at least one at least bidentate organic compound that is coordinatively bound to at least one metal ion, whereby the skeleton material has, at least in part, pores that contain a polymer, which is suited for adsorbing a substance. The invention also relates to a method for producing the skeleton material, to a method for accommodating at least one substance by the skeleton material, and to the use of the skeleton material, in particular, for storing, separating, controlled release or chemically converting an accommodated substance.
Abstract:
The invention relates to producing a silicate containing at least one type of silicium and oxygen consisting (1) in mixing silicium dioxide and/or silicium dioxide precursors with an aqueous solution, which comprises at least one type of R1R2R3R4N+compound containing a tetra-acryl ammonium compound and at least one type of base, wherein R1 and R2 represent methyl and, at the same time, R3 and R4 represent n-propyl; (2) in heating the colloidal solution thus obtained with a temperature greater than a boiling temperature at a selected colloidal solution pressure up to 180 °C at a normal pressure in such a way that at least one type of silicate-containing suspension is obtained. Said invention is characterised in that the silicium and oxygen-containing silicate is added in the form of a crystallisation-assisting agent.
Abstract:
The invention relates to porous metal-organic framework comprising Al'' and at least one at least bidentate compound. The at least one at least bidentate compound is a six-membered aromatic hydrocarbon ring A, wherein one ore more ring carbon atoms may be replaced by nitrogen and the three substituents X and optionally one or more substituents selected from the group including R, NRR', OR, SR, F, Cl, and Br, wherein R, R' independently represent hydrogen, methyl which is optionally substituted by one or more fluorine atoms or ethyl which is optionally substituted by one or more fluorine atoms and every X independently represents C(=O)O-, C(=S)O-, C(=O)S-, C(=S)S- or the protonized form thereof. The invention also relates to methods for producing said framework and to the use of the novel metal-organic framework.