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    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE
    143.
    发明公开
    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE 审中-公开

    公开(公告)号：US20240150264A1

    公开(公告)日：2024-05-09

    申请号：US18280686

    申请日：2022-03-01

    Applicant: BASF SE

    Inventor： Suman THOTLA ,  Hans-Guenter Wagner ,  Randolf HUGO ,  Gerrit WATERS ,  Michael HUEBNER ,  Markus NEUDERT ,  Thomas ROUSSIERE

    IPC: C07C7/05 ,  C07C1/22

    CPC classification number: C07C7/05 ,  C07C1/22

    Abstract: The invention relates to a process for obtaining isobutene from an isobutene containing C4-hydrocarbon mixture (1) in a plant comprising an etherification unit (3), a first distillation unit (5), an ether cleavage unit (10) and a second distillation unit (12), the process comprising: (a) contacting the C4-hydrocarbon mixture (1) with a primary alcohol (2) and reacting the mixture with the primary alcohol in the presence of an acidic catalyst to form the corresponding alkyl tert-butyl ether in the etherification unit (3); (b) distilling the reaction mixture (4) from the etherification unit (3) in the first distillation unit (5), a C4-hydrocarbon raffinate being withdrawn as the overhead product (6), and the alkyl tert-butyl ether being withdrawn as the bottom product (7); (c) vaporizing the bottom product from the first distillation unit (5) in an evaporator (8) obtaining a vapor stream (9); (d) reacting the vapor stream (9) of step (c) in the presence of an acidic catalyst obtaining isobutene and the primary alcohol as reaction products in the ether cleavage unit (10); (e) distilling the reaction mixture (11) from the ether cleavage unit (10) in the second distillation unit (12), isobutene being withdrawn as the overhead product (13), the primary alcohol and diisobutene being withdrawn as the bottom product (14) and being recycled to the etherification unit (3); wherein a purge stream (15) containing high boiling components with a normal boiling point higher than that of the alkyl tert-butyl ether is withdrawn from the evaporator (8) in step (c).

    PROCESS FOR MAKING A PARTICULATE (OXY)HYDROXIDE
    146.
    发明公开
    PROCESS FOR MAKING A PARTICULATE (OXY)HYDROXIDE 审中-公开

    公开(公告)号：US20240132370A1

    公开(公告)日：2024-04-25

    申请号：US18261535

    申请日：2022-01-07

    Applicant: BASF SE

    Inventor： Benjamin Johannes Herbert BERGNER ,  Rafael Benjamin BERK ,  Lennart Karl Bernhard GARVE

    IPC: C01G53/00

    CPC classification number: C01G53/006 ,  C01P2002/01 ,  C01P2004/04 ,  C01P2006/40

    Abstract: Disclosed herein is a process for making a particulate (oxy)hydroxide of TM including the steps of:



    (a) providing an aqueous solution (α) containing a water-soluble salt of nickel, one metal selected from cobalt and manganese, a compound of at least one metal selected from Ti, Zr, Mg and Nb, an α- or β-hydroxy carboxylic acid or ascorbic acid or of an amino acid selected from glycine, alanine and serine, or their alkali metal salts, an aqueous solution (β) containing an alkali metal hydroxide and, optionally, an aqueous solution (γ) containing ammonia,
    (b) combining the solution (α), the solution (β), and, if applicable, the solution (γ) at a pH value between 11.0 and 13.0 in a stirred tank reactor, thereby creating solid particles of a hydroxide containing nickel, said solid particles being slurried.

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