Basf Aktiengesellschaft

Thomas Lautensack

Alfred Hagemeyer

Axel Deimling

Dieter Hermeling

Otto Watzenberger

Christopher William Rieker

Gunter Lauth

Catalyst and catalytic oxidative dehydrogenation of alkylaromatics and

A process for the preparation of olefinically unsaturated compounds by catalytic oxidation, ie oxidative dehydrogenation by transferring oxygen from a previously oxidized oxygen carrier acting as catalyst, in the absence of molecular oxygen, the catalyst being regenerated after exhaustion, wherein, during the operating phase of the catalyst (oxidation/dehydration partial step), the residence time, space velocity and/or temperature of the reactants in the reactor is/are adjusted, ie, controlled, continuously or in discrete steps, in a manner appropiate to the momentary state of activity of the redox catalyst by adjusting--continuously or stepwise--the residence time of the reactants in the freshly regenerated catalyst (ie at the commencement of the reaction) to a shorter time, and/or the temperature to a lower value, than the corresponding parameter(s) in the partially reduced catalyst.

Catalytic oxidative dehydrogenation of alkylaromatics and paraffins

A process for the deoxygenation of organic oxo compounds, in particular phosphine oxides to phosphines and nitrobenzene to aniline, with reduced redox catalysts in a non-steady-state reaction with decoupled reductive regeneration of the redox catalyst entails the redox catalyst being reduced to a lower oxidation state and being reused for the deoxygenation.

Reductive deoxygenation using a redox catalyst

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Ludwigshafen, Germany

Thomas Lautensack