US 12,435,052 B2
Systems and methods for removing or reducing water in mixtures that include t-butyl hydroperoxide
Ha H. Nguyen, Houston, TX (US); and Xueyong Yang, Bellaire, TX (US)
Assigned to Lyondell Chemical Technology, L.P., Houston, TX (US)
Filed by Lyondell Chemical Technology, L.P., Houston, TX (US)
Filed on Oct. 3, 2022, as Appl. No. 17/958,845.
Claims priority of provisional application 63/251,909, filed on Oct. 4, 2021.
Prior Publication US 2023/0105219 A1, Apr. 6, 2023
Int. Cl. C07D 301/19 (2006.01); B01D 61/36 (2006.01); B01J 19/24 (2006.01); C02F 1/44 (2023.01); C02F 101/34 (2006.01)
CPC C07D 301/19 (2013.01) [B01D 61/362 (2013.01); B01J 19/245 (2013.01); C02F 1/448 (2013.01); C02F 2101/34 (2013.01)] 16 Claims
 
1. A method for producing epoxide, the method comprising:
providing a first mixture comprising t-butyl hydroperoxide, t-butyl alcohol, and a first amount of water, wherein the first amount of water is present in the first mixture at an amount of at least 2%, by weight, based on the weight of the first mixture;
contacting at least a portion of the first mixture with a membrane one or more times to produce a second mixture comprising t-butyl hydroperoxide, t-butyl alcohol, and a second amount of water, wherein the second amount of water is at least 30% less than the first amount of water, and wherein the second amount of water is present in the second mixture at an amount of about 0.01% to about 0.5%, by weight, based on the weight of the second mixture; and
reacting the second mixture comprising the second amount of water with propylene to produce a third mixture comprising propylene oxide and t-butyl alcohol.