US 11,986,805 B2
Method of reactivating catalyst
Srikant Gopal, Riyadh (SA); Turki Al-Smari, Riyadh (SA); Shahid Azam, Riyadh (SA); and Khalid Karim, Riyadh (SA)
Assigned to SABIC Global Technologies B.V., Bergen op Zoom (NL)
Appl. No. 17/431,812
Filed by SABIC Global Technologies B.V., Bergen op Zoom (NL)
PCT Filed Mar. 26, 2020, PCT No. PCT/IB2020/052858
§ 371(c)(1), (2) Date Aug. 18, 2021,
PCT Pub. No. WO2020/194228, PCT Pub. Date Oct. 1, 2020.
Claims priority of provisional application 62/823,930, filed on Mar. 26, 2019.
Prior Publication US 2022/0143584 A1, May 12, 2022
Int. Cl. B01J 23/96 (2006.01); B01J 23/28 (2006.01); B01J 23/652 (2006.01); B01J 38/18 (2006.01); C07C 51/215 (2006.01); C07C 53/08 (2006.01)
CPC B01J 23/96 (2013.01) [B01J 23/28 (2013.01); B01J 23/6525 (2013.01); B01J 38/18 (2013.01); C07C 51/215 (2013.01); C07C 53/08 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of using and regenerating catalyst for production of acetic acid from ethane, the method comprising:
flowing (1) feed gas comprising ethane and (2) an oxidant comprising oxygen to a reactor, in which a catalyst comprising an MoVNbPd oxide is disposed;
reacting, in the reactor, the ethane with the oxidant in presence of the catalyst to produce acetic acid;
when the catalyst's ability to catalyze the reaction between the ethane and the oxidant is reduced by 30% or more, ceasing the flow of the feed gas and the oxidant to the reactor; and
flowing a regenerating gas stream comprising 2 to 21 mol. % oxygen at a temperature of 200 to 375° C. and GHSV of 1000 to 10,000 through the reactor to contact the regenerating gas stream with the catalyst and thereby increase the catalyst's ability to catalyze the reaction between the ethane and the oxidant.