Abstract: It is intended to provide a production method for producing propylene oxide from propylene, hydrogen and oxygen, with improved reaction rate. The present invention provides a method for producing propylene oxide, comprising a step of reacting propylene, hydrogen and oxygen, in the presence of a Pd-supported catalyst, a titanosilicate catalyst and a Pd-free carbon material, in a liquid phase.

Abstract: A process for more efficiently producing propylene oxide from propylene, oxygen, and hydrogen with catalysts which comprise a noble metal and a titanosilicate having pores not smaller than a 12-membered oxygen ring. The process for propylene oxide production is characterized by reacting propylene, oxygen, and hydrogen in a solution comprising water, a nitrite compound, and an ammonium salt in the presence of a noble metal catalyst and a titanosilicate catalyst having pores not smaller than a 12-membered oxygen ring.

Abstract: A method for producing an epoxy compound characterized by comprising contacting an olefin, oxygen and hydrogen with a noble metal and a crystalline titanosilicate having an MFI structure in a liquid phase in the presence of a quinoid compound selected from the group consisting of a phenanthraquinone compound and a compound represented by formula (1) wherein R1, R2, R3 and R4 represent a hydrogen atom, or R1 and R2 or R3 and R4 adjacent to each other are each independently bound at the ends and represent, together with a carbon atom of a quinone to which they are respectively attached, a benzene ring which may be substituted with an alkyl group or a hydroxyl group, or a naphthalene ring which may be substituted with an alkyl group or a hydroxyl group; and X and Y, which is the same or different, represent an oxygen atom or an NH group, or a dihydro compound thereof.

Abstract: There is disclosed a method for producing propylene oxide, which includes: reacting propylene, oxygen, and hydrogen in the presence of a noble metal catalyst and a titanosilicate catalyst in a liquid phase containing a polycyclic compound, which is unsubstituted or substituted with at least one substituent selected from Group B below, wherein the polycyclic compound is composed of two or more identical or different ring compounds selected from Group A below and the ring compounds are fused, directly bonded, or bonded by a linkage group selected from the group consisting of an oxygen atom, carbon chain, and a group composed of oxygen atom(s) and a carbon chain, provided that said polycyclic compound is not a polycyclic compound having hydroxy groups or oxo groups at para or. ortho positions. Group A consisting of benzene, cyclopentadiene, cycloheptatriene, furane, pyrane, cyclopentene, cyclopentane, cyclohexane, cyclohexene, cyclohexadiene, cycloheptane, cycloheptene, and cycloheptadiene.

Abstract: An object of the present invention is to provide an efficient process for producing an epoxy compound from olefin, oxygen and hydrogen. The process of the present invention is characterized in that an olefin, oxygen and hydrogen are reacted in a liquid phase in the presence of a titanosilicate selected from the group consisting of a crystalline titanosilicate having MEL structure, MTW structure, BEA structure, MWW structure or DON structure, a mesoporous titanosilicate and a lamellar titanosilicate, a noble metal catalyst, and a quinoid compound or a dihydro-form of quinoid compound.

Abstract: A method for producing propylene oxide comprising a step of reacting hydrogen peroxide with propylene in the presence of an epoxidation catalyst in a liquid phase to produce propylene oxide and a step of recovering a recyclable constituent in a vent gas generated in the above step by absorbing the recyclable constituent in a solvent containing a nitrile.

Abstract: A layered titanosilicate obtained by contacting a layered borosilicate with a titanium source and an inorganic acid, and a method for producing an epoxy compound wherein the layered titanosilicate is used as a catalyst.

Abstract: The present invention provides a regeneration method of a titanosilicate catalyst, specifically provides a regeneration method of a titanosilicate catalyst which comprises contacting the titanosilicate catalyst deteriorated in catalytic ability with a nitrile compound or a mixture of water and a nitrile compound at a temperature from 25° C. to 200° C.

Abstract: The present invention relates to a method for producing propylene oxide, characterized in that peroxide is reacted with propylene in the presence of a titanosilicate catalyst which has an X-ray diffraction pattern of the values indicated below and is represented by the formula. xTiO2·(1?x)SiO2 (In the formula, x denotes a numerical value of 0.0001 to 0.1.) X-ray diffraction patterns (interplanar spacing of lattice d/?) 13.2±0.6 12.3±0.3 11.0±0.3 9.0±0.3 6.8±0.3 3.9±0.2 3.5±0.1 3.4±0.1.

Abstract: There is disclosed a method for producing propylene oxide, which includes: reacting propylene, oxygen, and hydrogen in the presence of a noble metal catalyst and a titanosilicate catalyst in a liquid phase containing a polycyclic compound, which is unsubstituted or substituted with at least one substituent selected from Group B below, wherein the polycyclic compound is composed of two or more identical or different ring compounds selected from Group A below and the ring compounds are fused, directly bonded, or bonded by a linkage group selected from the group consisting of an oxygen atom, carbon chain, and a group composed of oxygen atom(s) and a carbon chain, provided that said polycyclic compound is not a polycyclic compound having hydroxy groups or oxo groups at para or. ortho positions. Group A consisting of benzene, cyclopentadiene, cycloheptatriene, furane, pyrane, cyclopentene, cyclopentane, cyclohexane, cyclohexene, cyclohexadiene, cycloheptane, cycloheptene, and cycloheptadiene.

Abstract: A method for producing propylene oxide according to the present invention includes the step of reacting propylene, oxygen and hydrogen in a liquid phase in the presence of titanosilicate and a noble metal catalyst supported on a carrier comprising a noble metal catalyst and activated carbon having total pore volume of 0.9 cc/g or more. This makes it possible to provide a method for efficiently producing propylene oxide from propylene, oxygen, and hydrogen.

Abstract: A method for producing propylene oxide comprising a step of reacting hydrogen peroxide with propylene in the presence of an epoxidation catalyst in a liquid phase to produce propylene oxide and a step of recovering a recyclable constituent in a vent gas generated in the above step by absorbing the recyclable constituent in a solvent containing a nitrile.

Abstract: A process for more efficiently producing propylene oxide from propylene, oxygen, and hydrogen with catalysts which comprise a noble metal and a titanosilicate having pores not smaller than a 12-membered oxygen ring. The process for propylene oxide production is characterized by reacting propylene, oxygen, and hydrogen in a solution comprising water, a nitrite compound, and an ammonium salt in the presence of a noble metal catalyst and a titanosilicate catalyst having pores not smaller than a 12-membered oxygen ring.

Abstract: A method for producing an epoxy compound characterized by comprising contacting an olefin, oxygen and hydrogen with a noble metal and a crystalline titanosilicate having an MFI structure in a liquid phase in the presence of a quinoid compound selected from the group consisting of a phenanthraquinone compound and a compound represented by formula (1) wherein R1, R2, R3 and R4 represent a hydrogen atom, or R1 and R2 or R3 and R4 adjacent to each other are each independently bound at the ends and represent, together with a carbon atom of a quinone to which they are respectively attached, a benzene ring which may be substituted with an alkyl group or a hydroxyl group, or a naphthalene ring which may be substituted with an alkyl group or a hydroxyl group; and X and Y, which is the same or different, represent an oxygen atom or an NH group, or a dihydro compound thereof.

Abstract: A process for producing propylene oxide, includes the steps of reacting propylene with hydrogen peroxide in the presence of a crystalline titanosilicate catalyst having a pore structure of a 12-oxygen-membered ring or more in an organic solvent as a medium capable of being separated from water solution, obtaining a reaction mixture containing propylene oxide, separating the reaction mixture into liquid phases to obtain a water layer and an oil layer containing the organic solvent, the propylene oxide thereby being separated from the water into the oil layer.

Abstract: An object of the present invention is to provide an efficient process for producing an epoxy compound from olefin, oxygen and hydrogen. The process of the present invention is characterized in that an olefin, oxygen and hydrogen are reacted in a liquid phase in the presence of a titanosilicate selected from the group consisting of a crystalline titanosilicate having MEL structure, MTW structure, BEA structure, MWW structure or DON structure, a mesoporous titanosilicate and a lamellar titanosilicate, a noble metal catalyst, and a quinoid compound or a dihydro-form of quinoid compound.

Abstract: The present invention relates to a method for producing propylene oxide, characterized in that peroxide is reacted with propylene in the presence of a titanosilicate catalyst which has an X-ray diffraction pattern of the values indicated below and is represented by the formula. xTiO2·(1?x) SiO2 (In the formula, x denotes a numerical value of 0.0001 to 0.1.) X-ray diffraction patterns (interplanar spacing of lattice d/?) 13.2±0.6 12.3±0.3 11.0±0.3 9.0±0.3 6.8±0.3 3.9±0.2 3.5±0.1 3.4±0.

Abstract: A method is provided for producing propylene oxide, wherein propylene is reacted with hydrogen peroxide in the presence of an organic solvent and a crystalline titanosilicate catalyst having an MWW structure containing Ti, the Ti having been incorporated during crystallization.

Abstract: A process for producing propylene oxide, includes the steps of reacting propylene with hydrogen peroxide in the presence of a crystalline titanosilicate catalyst having a pore structure of a 12-oxygen-membered ring or more in an organic solvent as a medium capable of being separated from water solution, obtaining a reaction mixture containing propylene oxide, separating the reaction mixture into liquid phases to obtain a water layer and an oil layer containing the organic solvent, the propylene oxide thereby being separated from the water into the oil layer.

Abstract: A method for improving a crystalline titanosilicate catalyst having an MWW structure, characterized in that it comprises treating the crystalline titanosilicate catalyst having a MWW structure with a silylating agent.