Abstract:
Preparation of polyisobutylene whose content of terminal double bonds is more than 50% via polymerization of isobutene using a polymerization catalyst conventional for this purpose, from an industrial C4 hydrocarbon stream which comprises 1-butene, 2-butene and isobutene and which can comprise up to 3000 ppm by weight of 1,3-butadiene, by reducing the content of oxygenates in the C4 hydrocarbon stream, prior to polymerization of the isobutene, via contact with an inorganic adsorbent at a pressure of from 1 to 20 bar and at a temperature of from 20 to 220°C.
Abstract:
The invention relates to a pressurised gas container having a pre-defined maximum filling pressure, used to receive, store and dispense a gas, and containing said gas and a mixture respectively containing, in relation to the entire weight of the mixture: a) between 2 and 60 wt. % of a skeletal material constituent A, and b) between 40 and 98 wt. % of a skeletal material constituent B, constituent A containing at least one microencapsulated PCM device material, and constituent B containing at least one porous organometallic skeletal material containing at least one at least bidentate organic compound which is co-ordinately bound to at least one metal ion. The at least one porous organometallic skeletal material can at least partially accumulate the gas by adsorption. The invention also relates to methods for filling a pressurised gas container with the above-mentioned mixture for receiving, storing and dispensing a gas.
Abstract:
The present invention relates to a method for separating a gas component from a gas mixture containing the gas component. The method comprises steps a) bringing the gas mixture into contact with at least one sorbent-containing porous metal organic framework material, wherein the framework material receives the gas component and contains at least one at least bidentate organic compound coordinatively bound to at least one metal ion, and b) desorption of the gas component, wherein the porous metal organic framework material is activated before step a) is performed.
Abstract:
The present invention relates to a process for preparing a porous metal organic framework comprising at least two organic compounds coordinated to at least one metal ion, which comprises the steps (a) oxidation of at least one anode containing metal corresponding to the at least one metal ion in a reaction medium in the presence of at least a first organic compound, where the first organic compound is an optionally substituted monocyclic, bicyclic or polycyclic saturated or unsaturated hydrocarbon in which at least two ring carbons are replaced by heteroatoms selected from the group consisting of N, O and S, to form a reaction intermediate containing at least one metal ion and the first organic compound; and (b) reaction of the reaction intermediate at a prescribed temperature with an at least second organic compound which coordinates to the at least one metal ion, where the second organic compound is derived from a dicarboxylic, tricarboxylic or tetracarboxylic acid.
Abstract:
The present invention relates to a method for the separation of carbon dioxide from a gas mixture containing carbon dioxide comprising the steps of (a) contacting the gas mixture with at least one sorbent comprising a porous metal-organic framework material, the framework material taking up the carbon dioxide from the gas mixture and comprising at least one at least bidentate organic compound coordinately bound to at least one metal ion, wherein the at least bidentate organic compound comprises at least one substituted or unsubstituted amino group and wherein the at last one metal ion is an ion selected from the group of metals consisting of magnesium, calcium, strontium, barium, aluminium, gallium, indium, scandium, yttrium, titanium, zirconium, iron, copper and lanthanoids; and (b) desorbing the carbon dioxide.
Abstract:
The invention relates to a method for producing propene from propane. Said method comprises the following steps: A) a feed gas stream (a) containing propane is prepared; B) the feed gas stream (a) containing propane, is introduced with optionally water vapour and optionally, an oxygen-containing gas stream into a dehydrogenation zone and then the propane is dehydrogenated to form propene, and a product gas stream (b) containing propane, propene, methane, ethane, ethene, hydrogen, optionally carbon monoxide, carbon dioxide, water vapour and oxygen, is obtained; C) the product gas stream (b) is cooled, optionally compressed and then water vapour is separated by condensation and a product gas stream (c) depleted in water vapour is obtained; D) the product gas stream (c) is brought into contact with a selectively active adsorber which selectively adsorbs propene in the selected adsorption conditions, and an adsorber charged with propene and a gas stream (d2) depleted in propene and containing propane, methane, ethane, ethene and hydrogen, carbon monoxide and carbon dioxide are obtained; E) a gas stream (e1) containing propene is released from the adsorber charged with propene by reducing the pressure and/or heat of the adsorber.
Abstract:
The present invention relates to processes for preparing a porous organometallic framework material, comprising the step of reacting at least one metal compound with at least one at least bidentate organic compound which can bond coordinatively to the metal, in the presence of a non-aqueous organic solvent, the metal being ScIII, YIII or a trivalent lanthanide, and the organic compound having at least two atoms each selected independently from the group consisting of oxygen, sulphur and nitrogen, and via which the organic compound can bond coordinatively to the metal, the reaction taking place with stirring and at a pressure of not more than 2 bar (absolute). The invention further relates to porous organometallic framework materials which have been prepared by this process, and also to their use.
Abstract:
The present invention relates to a method for producing a porous organometallic framework material by reacting at least one metal compound, the metal being Be, Mg, Ca, Sr, Ba, AI, Ga or In, with at least one at least bidentate organic compound. The invention also relates to the use of such porous organometallic framework materials.