	US 12,357,968 B2
	Catalyst activation method
Andrew Sharratt, Runcorn (GB); and Claire Rees, Runcorn (GB)
Assigned to MEXICHEM FLUOR S.A. DE C.V., San Luis Potosi (MX)
Appl. No. 17/418,926
Filed by Mexichem Fluor S.A. de C.V., San Luis Potosi (MX)
PCT Filed Jan. 16, 2020, PCT No. PCT/GB2020/050087 § 371(c)(1), (2) Date Jun. 28, 2021, PCT Pub. No. WO2020/148540, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 1900647 (GB), filed on Jan. 17, 2019.
Prior Publication US 2022/0062866 A1, Mar. 3, 2022
Int. Cl. B01J 23/26 (2006.01); B01J 23/06 (2006.01); B01J 35/63 (2024.01); B01J 35/64 (2024.01); B01J 37/06 (2006.01); B01J 37/14 (2006.01); C07C 17/07 (2006.01)

CPC B01J 23/26 (2013.01) [B01J 23/06 (2013.01); B01J 35/633 (2024.01); B01J 35/653 (2024.01); B01J 37/06 (2013.01); B01J 37/14 (2013.01); C07C 17/07 (2013.01)]

24 Claims

1. A method for activating a chromia catalyst comprising zinc oxide, the method comprising:

a) drying the catalyst at a temperature of from 100° C. to 400° C.;

b) treating the catalyst in a first activation step with a composition comprising HF at a temperature of from 100° C. to about 500° C.;

c) treating the catalyst in a second activation step with a composition comprising an oxidant and HF at a temperature of from about 100° C. to about 500° C.