US 12,409,444 B2
Method for making copper-containing catalysts
Youxin Cui, Billingham (GB); Monica Garcia, Billingham (GB); Pauline Elizabeth Glen, Billingham (GB); Norman Macleod, Billingham (GB); Michael Thomas Nicholson, Billingham (GB); Simone Roloff-Standring, Billingham (GB); and Kaamila Un Din, Billingham (GB)
Assigned to Johnson Matthey Public Limited Company, London (GB)
Appl. No. 18/040,756
Filed by JOHNSON MATTHEY PUBLIC LIMITED COMPANY, London (GB)
PCT Filed Sep. 6, 2021, PCT No. PCT/GB2021/052285
§ 371(c)(1), (2) Date Feb. 6, 2023,
PCT Pub. No. WO2022/069854, PCT Pub. Date Apr. 7, 2022.
Claims priority of application No. 2015634 (GB), filed on Oct. 2, 2020.
Prior Publication US 2023/0278015 A1, Sep. 7, 2023
Int. Cl. B01J 23/80 (2006.01); B01J 21/14 (2006.01); B01J 37/03 (2006.01); C01B 3/16 (2006.01); C01B 3/32 (2006.01); C07C 29/154 (2006.01)
CPC B01J 23/80 (2013.01) [B01J 21/14 (2013.01); B01J 37/031 (2013.01); C01B 3/16 (2013.01); C01B 3/326 (2013.01); C07C 29/154 (2013.01); C01B 2203/0233 (2013.01); C01B 2203/0238 (2013.01)] 28 Claims
 
1. A method for preparing a copper-containing catalyst comprising the steps of: (a) combining an acidic copper-containing solution with a first basic precipitant solution in a first precipitation step to form a first precipitate, (b) combining an acidic aluminium-containing solution, further comprising one or more metal compounds selected from copper compounds, zinc compounds and promoter compounds, with a second basic precipitant solution in a second precipitation step to form a second precipitate, (c) contacting the first and second precipitates together in a further mixing step to form a catalyst precursor, and (d) washing, drying and calcining the catalyst precursor to form the copper-containing catalyst, wherein a silica precursor is included in the first precipitation step, the second precipitation step or the precipitate mixing step, to provide a catalyst with a silica content, expressed as SiO2, in the range of 0.1 to 5.0 wt %.