Abstract:
This invention relates to a process of catalytic hydroconversion of a heavy hydrocarbon oil containing a substantial portion of components having an atmospheric boiling point above 565 DEG C to give a product hydrocarbon oil containing components having a boiling point below about 565 DEG C. The process includes steps of mixing a heavy hydrocarbon oil with an oil soluble molybdenum compound, introducing the resulting mixture into a hydroconversion zone, introducing a reactor feed gas into the hydroconversion zone, and recovering the product hydrocarbon oil from the hydroconversion zone.
Abstract:
The invention relates to a process for the preparation of free-flowing end products of very acidic cation exchangers. The grain pile of end products of the very acidic cation exchangers produced in the process described in the patent application P 195 48 012.0 cannot flow freely. By adding linking wetting agents or water-soluble initiators or tensides during polymerisation or after filtration of the end product and/or by taking technical measures, the grain pile of the very acidic cation exchangers is able to flow freely permanently or temporarily using the following process: (1) by adding to the copolymerisation system, known wetting agents in quantities of up to 0.25 g/l of the aqueous phase or water-soluble initiators in quantities of from 0.05 to 20 g/l of the aqueous phase 20 to 120 minutes after reaching the point of gelification; (2) by treating the very acidic cation exchangers with aqueous solution of surfactants with a content of from 0.1 to 5 g/l in the batch or column process; (3) by 1 to 4 hours of washing of the very acidic cation exchangers with water of at least 60 DEG C, subsequent separation off of the water and drying of the end product using sensible heat.
Abstract:
A vanadium-containing catalyst system particularly suited to the polymerization of blow moldable olefin polymers. The catalyst system includes a supported, first catalyst component prepared by contacting preheated silica or silica pretreated with hexaalkyldisilazane, with (1) a compound or complex which includes at least one carbon to magnesium covalent bond and (2) a compound which includes at least one carbon to Group III metal covalent bond. The sequence of contact of the silica with compound or complex (1) and compound (2) is optional. However, unless the compound or complex (1) and the compound (2) contact the silica simultaneously, the product of this contact is next contacted with whichever of compound (1) or (2) does not initially contact the silica. Where the catalyst system involves the preheated silica, the product of the step of contacting with compounds (1) and (2) is contacted with a vanadium compound which includes at least one halogen atom. Where the catalyst system involves the silica pretreated with hexaalkyldisilazane, the product of the step of contacting with compounds (1) and (2) is washed and then contacted with a vanadium compound which includes at least one halogen atom. Finally, the product of the vanadium compound contacting step is contacted with an alcohol. A second component of the catalyst system is an organoaluminum compound cocatalyst. The catalyst system also includes a halocarbon compound promoter as a third catalyst component.
Abstract:
A flow reactor is disclosed of the type described in the preamble to claim 1 and which may be used to carry out various chemical processes - such as, for example, the synthesis, the cleavage or the hydrogenation of substances. The reagents may be present in the liquid and/or gaseous phase.
Abstract:
A method for manufacturing cobalt complexes having the formula: [Co(NH3)5M] Ty wherein M ligands are selected from substituted and unsubstituted C1-C30 carboxylic acids having the formula: RC(O)O-; said method comprising reacting cobalt complexes having the formula: [Co(NH3)5X] Ty (e.g., X is chlorine) with concentrated ammonium hydroxide followed by carboxylic acid anhydride of the formula: RC(O)O(O)CR.
Abstract:
An improved process for the synthesis of zerovalent nickel catalyst useful for the hydrocyanation of olefins, wherein catalyst formation is improved by applying sonication during formation of catalyst. The sonication may be applied to the catalyst reactant mixture containing elemental nickel and a ligand; or alternatively, the sonication may be applied to the elemental nickel prior to the addition of ligand to the reaction mixture.
Abstract:
The present invention is directed to a continuous process for producing a desired hydrocarbon product using a heterogeneous slurry catalyst, to the product of said process, and to the reactor utilized in such process.
Abstract:
The invention is directed to a method for preparing a supported metal catalyst comprising adding a soluble metal salt to a substrate and then reducing the metal salt to the metal by heating in the presence of a gaseous or liquid hydrocarbon which polymerises on heating.
Abstract:
Disclosed is a method carried out in a reaction column for chemically reacting substances whose reaction is limited by an unfavourable equilibrium position of the formation reaction or by a preceding equilibrium. During the reaction, one or more auxiliary substances acting as permanent gases such as a stripping gas are used to remove one or more substances from the reaction mixture.
Abstract:
The present invention relates to an improved sulfur dioxide reduction catalyst. The catalyst of this invention is a fired alumina calcium aluminate catalyst that exhibits improved mechanical stability.