Patent ID: 6512128
Filing Date: 2003-01-28
Classification: B01J,C07D,Y02P

Abstract:
A method for producing propylene oxide by reacting propylene with a hydroperoxide, except for ethylbenzene hydroperoxide, in the presence of a titanium-containing silicon oxide catalyst satisfying all of the following conditions (1) to (4):(1): an average pore size of 10 Ã¥ or more, (2): a pore size of 90% or more of the total pore volume of 5 to 200 Ã¥, (3): a specific pore volume of 0.2 cm3/g or more, and (4): a quaternary ammonium ion represented by the following general formula (I) is used as a template and the said template is removed by solvent extraction operation; [NR1R2R3R4]+â€ƒâ€ƒ(I) wherein, R1 represents a linear or branched hydrocarbon chain having 10 to 36 carbon atoms, and R2 to R4 represent an alkyl group having 1 to 6 carbon atoms, and wherein the catalyst has no peak showing an interplanar spacing (d) in a X-ray diffraction.