Basf Se Corporation

Michael Zeilinger

Frieder Borgmeier

Juergen Wortmann

Jan Spielmann

Wolfgang Rohde

Kerstin Schierle-Arndt

Sabine Weiguny

Iran Otero Martinez

Timo Ott

Torben Adermann

Fabian Seeler

Thomas Michael Ryll

Stefan Bokern

Andreas Kempter

Dag Wiebelhaus

Bjoern Kaibel

Ingo Biertuempel

Waldemar Schatz

Frank Piepenbreier

Rosario Mazarro Berdonces

Chee Jian Chan

Process for the recovery of transition metal from spent lithium ion batteries containing nickel, wherein said process comprises the steps of (a) heating a lithium containing transition metal oxide material to a temperature in the range of from 400 to 1200° C., (b) treating said heat-treated material with water, (c) treating the solid residue from step (b) with an acid selected from sulfuric acid, hydrochloric acid, nitric acid, methanesulfonic acid, oxalic acid and citric acid, (d) adjusting the pH value to 2.5 to 8, (e) removing compounds of Al, Cu, Fe, Zn or combinations of at least two of the foregoing from the solution or slurry obtained in step (d).

Process for the recovery of lithium and transition metal using heat

A process for manufacturing of an alkanesulfonic acid, and an alkanesulfonic acid manufactured by the process. Aspects of the process may involve manufacturing an alkanesulfonic acid by reaction of an initiator composition with an alkane and sulfur trioxide by preparing an initiator composition by reacting aqueous hydrogen peroxide with alkanesulfonic acid and/or HSO; and reacting the initiator composition with sulfur trioxide and alkane to form an alkanesulfonic acid, wherein an alkane with a purity of at least 98.0 mol-% is used.

Process for the manufacturing of alkanesulfonic acids

The present invention relates to a process for the manufacturing of methane sulfonic acid (MSA) by reaction of a radical initiator composition with methane and sulfur trioxide comprising the steps (a) preparation of the intiator composition by reacting aqueous hydrogen peroxide with the components methane sulfonic acid and methane sulfonic acid anhydride and (b) reaction of the initiator composition from step (a) with sulfur trioxide and methane to form methane sulfonic acid. The invention further relates to the use of methane sulfonic acid anhydride (MSA anhydride) in said process and to methane sulfonic acid manufactured by said process.

Process for the manufacturing of methane sulfonic acid

The present invention deals with a process for the production of alkanesulfonic acids, in particular methanesulfonic acid, and a method of purification of the raw products.

Process for the production of alkanesulfonic acids

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Ludwigshafen, Germany

Michael Zeilinger