Abstract:
The invention relates to a catalytically active body for the synthesis of dimethyl ether from synthesis gas. In particular, the invention relates to an improved catalytically active body for the synthesis of dimethyl ether, whereby the components of the active body comprise a methanol active component and an acid component comprising a zeolitic material being crystallized by means of one or more alkenyltrialkylammonium cation R 1 R 2 R 3 R 4 N + -containing compounds as structure directing agent. Furthermore, the present invention concerns a method for the preparation of a catalytically active body, the use of the catalytically active body and a method for the preparation of dimethyl ether from synthesis gas.
Abstract:
Disclosed is a computer-implemented method for controlling production of a product in a production facility using one or more input materials, in particular for the production of a chemical product, wherein at least one of the input materials is a waste-derived material which may be provided from a source location to a target location of the production facility and wherein the source location and the target location may comprise two different waste-related technical requirements for the use of waste-derived materials for the production of a product, and wherein the method comprises the following steps: - providing a digital representation of the waste-related technical requirements for different source locations and target locations, wherein the digital representation includes the waste-related technical requirements as a rule-based model or set of rules, based on waste material categories being processed using material attributes for classifying a waste-derived material into at least one waste material category, and wherein it is distinguished between attested material attributes and associated material attributes; - evaluating at least one rule of the set of rules or the rule-based model relating to at least one waste material category for an underlying source location and for the target location, in particular regarding an attested material attribute for the waste-derived material; - generating control data for the production of the product, dependent on the result of the evaluation, wherein considering an associated material attribute.
Abstract:
The present invention relates to a catalyst for the conversion of oxygenates to olefins, wherein the catalyst comprises one or more zeolites of the MFI, MEL and/or MWW structure type and particles of one or more metal oxides, the one or more zeolites of the MFI, MEL and/or MWW structure type comprising one or more alkaline earth metals selected from the group consisting of Mg, Ca, Sr, Ba and combinations of two or more thereof, wherein the catalyst displays a water uptake of 9.0 wt.-% or less, as well as to a process for the production thereof and to its use, in particular in a process for converting oxygenates to olefins.
Abstract:
The present invention relates to a gas-phase process for the preparation of butadiene comprising (i) providing a gas stream G-1 comprising ethanol; (ii) contacting the gas stream G-1 comprising ethanol with a catalyst, thereby obtaining a gas stream G-2 comprising butadiene, wherein the catalyst comprises a zeolitic material having a framework structure comprising YO2, Y standing for one or more tetravalent elements, wherein at least a portion of Y comprised in the framework structure is isomorphously substituted by one or more elements X, as well as to a zeolitic material having a framework structure comprising YO2, Y standing for one or more tetravalent elements, wherein at least a portion of Y comprised in the framework structure is isomorphously substituted by one or more elements X, wherein the zeolitic material displays a specific X-ray powder diffraction pattern, and to its use.
Abstract:
The present invention relates to a process for the preparation of a zeolitic material having a CHA-type framework structure comprising YO 2 and X 2 O 3 , wherein said process comprises the steps of: (1) providing a mixture comprising one or more sources for YO 2 , one or more sources for X 2 O 3 , and one or more tetraalkylammonium cation R 1 R 2 R 3 R 4 N + -containing compounds as structure directing agent; (2) crystallizing the mixture obtained in step (1) for obtaining a zeolitic material having a CHA-type framework structure; wherein Y is a tetravalent element and X is a trivalent element, wherein R 1 , R 2 , and R 3 independently from one another stand for alkyl, wherein R 4 stands for cycloalkyl, and wherein the mixture provided in step (1) does not contain any substantial amount of a source for Z 2 O 5 , wherein Z is P, as well as to zeolitic materials which may be obtained ac- cording to the inventive process and to their use.