Abstract:
The present invention relates to a process for the dimerization of branched olefins or a mixture of olefins and paraffins, wherein said olefins and paraffins have between 3 to 10 carbon atoms, comprising contacting a feedstream comprising said olefin or mixture of olefins and paraffins with a catalyst composition comprising a medium pore aluminosilicate zeolite having a pore size of between more than 5 Å but less than 6 Å and up to 5 wt-% of one or more elements selected from the group consisting of molybdenum (Mo), tungsten (W), seaborgium (Sg), cobalt (Co), rhodium (Rh), iridium (Ir) and meinerium (Mt).
Abstract:
A method for forming a catalyst can comprise: heating a Ge-ZSM-5 zeolite powder at a temperature of 400 to 600° C.; ion-exchanging the heat-treated zeolite powder with an alkali metal and impregnating the heat-treated zeolite powder with noble metal; heating the ion-exchanged, impregnated zeolite powder to a temperature of 250 to 350° C.; mixing the second heat-treated zeolite powder with a solid silica binder and a colloidal silica binder to form a mixture, wherein if the solid silica has a purity of less than or equal to 66 wt % of silica oxide based on the total weight of the solid silica, then the mixture is free of an extrusion aide and the colloidal silica has a particle size of less than 20 nm as measured along a major axis; forming the mixture into a shaped body; and heating the shaped body to 100 to 350° C. to result in the catalyst.
Abstract:
A solar energy based continuous process and reactor system for the production of an alkene by dehydrogenation of the corresponding alkane is performed in a reactor which process comprises alternatingly performing a first mode and a second mode in the same reactor, wherein the first mode is a non-oxidative dehydrogenation wherein the non-oxidative dehydrogenation is performed by contacting the alkane with a suitable dehydrogenation catalyst at a temperature of at least 500° C. to produce the corresponding alkene and hydrogen and wherein the second mode is an oxidative dehydrogenation wherein the oxidative dehydrogenation is performed by contacting the alkane with a suitable dehydrogenation catalyst and an oxidation agent at a temperature from 300 to 500° C. to produce the corresponding alkene wherein the dehydrogenation catalyst for the oxidative dehydrogenation and the non-oxidative dehydrogenation are the same, wherein the heat for the first mode is provided by a solar energy source.
Abstract:
The invention relates to a process for the production of polyethylene. The polymerisation takes place in the presence of a catalyst system comprising a hydrocarbon solution containing 1) a dialkoxy magnesium compound and 2) an organic oxygen containing titanium compound further comprising an inorganic oxide support and an activator.
Abstract:
A ferroelectric device comprising: a substrate; a first electrode disposed on the substrate; a ferroelectric layer disposed on and in contact with the first electrode; and a second electrode disposed on and in contact with the ferroelectric layer, wherein at least one of the first electrode and the second electrode is an organic electrode comprising a doped electroconductive organic polymer.
Abstract:
A method of producing a purified mixed xylene comprising: introducing toluene and methanol to an alkylation reactor (32); reacting the toluene and the methanol in the alkylation reactor (32) to form a hydrocarbon stream (22) comprising a first mixed xylene, wherein the alkylation reactor (32) comprises an alkylation catalyst; separating the hydrocarbon stream (22) into a toluene stream (24) and a separated C8+ stream (14); introducing the toluene stream (24) to a transalkylation reactor (38) with a transalkylation catalyst to produce a transalkylated stream (17) comprising a second mixed xylene; adding the transalkylated stream (17) to the hydrocarbon stream (22); and separating a C8 product stream (19) comprising the purified mixed xylene from the separated C8+ stream (14).
Abstract:
The present invention relates to a catalyst component for polymerization of an olefin comprising a compound represented by the Fischer projection of: wherein R5 is substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms; R6 and R7 are different and independently selected from the group consisting of hydrogen, halogen and substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms; R5-R7 optionally containing one or more hetero-atoms replacing one or more carbon atoms, one or more hydrogen atom or both, wherein said hetero-atom is selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus and halogen; and wherein the compound of Formula (I) is the only internal electron donor in the catalyst component. The present invention also relates to a process for preparing a polymerization catalyst component comprising the steps of i) contacting a compound R4zMgX2-z wherein R4 is aromatic, aliphatic or cyclo-aliphatic group containing 1 to 20 carbon atoms, X is a halide, and z is in a range of larger than 0 and smaller than 2, with an alkoxy- or aryloxy-containing silane compound to give a first intermediate reaction product; ii) contacting the first intermediate reaction product with at least one activating compound selected from the group formed by internal electron donors and compounds of formula M(OR2)v-w(R3)w, wherein M can be Ti, Zr, Hf, Al or Si, each R2 and R3, independently, represent an alkyl, alkenyl or aryl group, v is the valency of M and w is smaller than v and iii) contacting the second intermediate reaction product with a halogen-containing Ti-compound and an internal electron donor represented by the Fischer projection of formula (I); and optionally with at least one compound selected from a group comprising a monoester, a diester and a 1,3-diether.
Abstract:
In an embodiment a catalyst comprises a medium or large pore zeolite having germanium incorporated into the zeolite framework. The zeolite can have a pore structure that is one dimensional, two dimensional or three dimensional. A metal selected from Group 10 can be deposited on the zeolite. In an embodiment, a process for synthesizing the zeolite comprises preparing a medium pore zeolite containing germanium in the framework of the zeolite and calcining the zeolite. In an embodiment, the catalyst can be used in a process for the conversion of hydrocarbons comprising contacting a hydrocarbon stream containing alkanes, olefins, or mixtures thereof having 2 to 12 carbon atoms per molecule with the catalyst and recovering the product.
Abstract:
The present disclosure relates to a compound comprising an aryloxy-phthalocyanine compound of Group III metals, a method for preparing the aryloxy-phthalocyanine compound of Group III metals and an article of manufacture made therefrom.
Abstract:
The invention relates to a metallocene complex according to the following formula (1) wherein R1 and R2 are the same or different and are a substituted or unsubstituted, linear or branched, hydrocarbyl group comprising 1 to 30 carbon atoms; M is titanium, zirconium, or hafnium and X1 and X2 are the same and are halogen or a hydrocarbyl group comprising 1 to 20 carbon atoms.