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公开(公告)号：US10894766B2
公开(公告)日：2021-01-19
申请号：US16618283
申请日：2018-05-23
Applicant: BASF SE
Inventor： Jan Spielmann , Juergen Wortmann , Frieder Borgmeier , Michael Zeilinger , Rosario Mazarro Berdonces , Bjoern Kaibel
IPC: C07C317/04 , C07C315/06 , C07C303/06 , C07C303/44 , C07C309/04
Abstract: 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.
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公开(公告)号：US10899705B2
公开(公告)日：2021-01-26
申请号：US16614599
申请日：2018-05-23
Applicant: BASF SE
Inventor： Jan Spielmann , Michael Zeilinger , Juergen Wortmann , Frieder Borgmeier
IPC: C07C317/04 , C07C315/06 , C07C303/06 , C07C303/44 , C07C309/04
Abstract: 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.
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公开(公告)号：US12152287B2
公开(公告)日：2024-11-26
申请号：US17046766
申请日：2019-04-01
Applicant: BASF SE
Inventor： Wolfgang Rohde , Torben Adermann , Thomas Michael Ryll , Kerstin Schierle-Arndt , Fabian Seeler , Sabine Weiguny , Michael Zeilinger
Abstract: 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).
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公开(公告)号：US11247967B2
公开(公告)日：2022-02-15
申请号：US16963748
申请日：2019-01-30
Applicant: BASF SE
Inventor： Frieder Borgmeier , Jan Spielmann , Michael Zeilinger , Juergen Wortmann
IPC: C07C303/14 , C07C303/44
Abstract: 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 H2SO4; 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.
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