Abstract:
The present invention relates to a method for pre-treating hydroamination catalysts, characterized in that the hydroamination catalyst is brought into contact with a mixture containing ammonia prior to the reaction of olefins with ammonia, a primary or a secondary amine, wherein the mixture containing ammonia contains less than 40 wt.-% olefin. The invention further relates to a method for producing alkyl amines by reacting olefins with ammonia, primary or secondary amines at a hydroamination catalyst that is pre-treated according to the invention prior to the reaction of the olefins by bringing the hydroamination catalyst into contact with a mixture containing ammonia, wherein the mixture containing ammonia contains less than 40 wt.-% olefin.
Abstract:
The invention relates to a method for oligomerizing alkenes, in which an alkene-containing feedstock is prepared and is subjected to an oligomerization process in two successive reaction zones.
Abstract:
A method for producing o-xylene comprises the steps of a) the dimerizing of 2-butenes into 3,4- and/or 2,3-dimethylhexenes and b) the dehydrogenating aromatizing of 3,4- and/or 2,3 dimethylhexenes to xylenes, and is suitable for the selective production of o-xylene.
Abstract:
The present invention relates to a process for preparing olefin codimers by converting a first and second olefin starting material over a heterogeneous olefin oligomerization catalyst, to the olefin codimers obtainable by this process, to a process for preparing alcohols, in which such olefin codimers are subjected to a hydroformylation and subsequent hydrogenation, to the alcohol mixtures thus obtainable and to their use.
Abstract:
A catalytic material comprising Ni supported on an oxidic support comprising Zr in oxidic form and Si in oxidic form, wherein the catalytic material comprises equal to or greater than 65 weight-% of Ni, calculated as elemental Ni, wherein the catalytic material exhibits a Ni:Zr atomic ratio in the range of from 8.5 to 50.0.