Evonik Functional Solutions Gmbh

Evonik Operations Gmbh

Ruhr-universitat Bochum

Felix Gärtner

Guido Stochniol

Frank Geilen

Manfred Neumann

Horst-Werner Zanthoff

Patrik Stenner

Benjamin Willy

Felix Nissen

Michael Horn

Philip Heinrich Reinsberg

Bettina Ludwig

Wolfgang Schumann

Rüdiger Teufert

Jutta Malter

Tobias Stadtmüller

Julia Heidelberg

A process for electrochemical preparation of sodium alkoxide is performed in an electrolysis cell having three chambers, wherein the middle chamber is separated from the cathode chamber by a solid-state electrolyte permeable to sodium ions, and from the anode chamber by a diffusion barrier. The geometry of the electrolysis cell protects the solid-state electrolyte permeable to sodium ions from acidic destruction by the pH of the anolyte that falls in the course of electrolysis. The anolyte used in the process is a brine also comprising carbonates and/or hydrogencarbonates, as well as NaCl. The process solves the problem that COfrom these carbonates and/or hydrogencarbonates forms in the electrolysis cell during the electrolysis of this brine obtained from pretreatment. The process prevents the formation of a gas bubble in the electrolysis cell that disrupts electrolysis and reduces the contamination of the chlorine with CO.

Process for preparing sodium alkoxides

A process for electrochemical preparation of an alkali metal alkoxide solution is performed in an electrolysis cell having three chambers. The middle chamber is separated from the cathode chamber by a solid-state electrolyte permeable to cations, for example NaSICON, and from the anode chamber by a diffusion barrier, for example a membrane selective for cations or anions.

Process for preparing alkali metal alkoxides in a three-chamber electrolysis cell

A process is useful for the isomerization of Cto Colefins having an internal double bond into the corresponding olefins having a terminal double bond using a heterogeneous catalyst system of a silicon-aluminium mixed oxide composition.

Process for the isomerization of olefins

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Haltern am See, Germany

Felix Gärtner