Abstract: A method for producing propylene oxide involves an oxidation step, a distillation step, an epoxidation step, and a separation step. The distillation step involves distilling the reaction mixture containing cumene hydroperoxide to separate it into a concentrate containing cumene hydroperoxide and a distillate. The reaction mixture is continuously distilled so that the ratio of the flow rate of the distillate to the flow rate of the reaction mixture to be distilled is 0.037 to 0.13. The epoxidation step involves obtaining a reaction mixture containing propylene oxide and cumyl alcohol by contacting the concentrate with propylene in the presence of a catalyst in one or more reactors to cause a reaction between propylene and cumene hydroperoxide in the concentrate, in which the outlet temperature of the final reactor is adjusted to 115° C. or more and less than 140° C.

Abstract: A method for producing propylene oxide involves an oxidation step, a distillation step, an epoxidation step, and a separation step. The distillation step involves distilling the reaction mixture containing cumene hydroperoxide to separate it into a concentrate containing cumene hydroperoxide and a distillate. The reaction mixture is continuously distilled so that the ratio of the flow rate of the distillate to the flow rate of the reaction mixture to be distilled is 0.037 to 0.13. The epoxidation step involves obtaining a reaction mixture containing propylene oxide and cumyl alcohol by contacting the concentrate with propylene in the presence of a catalyst in one or more reactors to cause a reaction between propylene and cumene hydroperoxide in the concentrate, in which the outlet temperature of the final reactor is adjusted to 115° C. or more and less than 140° C.

Abstract: A method for regenerating a titanosilicate catalyst, comprising a step of mixing a titanosilicate having reduced catalytic ability with a cyclic secondary amine, and a method for producing an oxirane compound, which comprises a step of reacting hydrogen peroxide with a C2-C12 compound having a carbon-carbon double bond, in the presence of a titanosilicate catalyst obtained by the regeneration method.

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: The present invention relates to a method for producing propylene oxide, comprising a step of bringing propylene, oxygen and a silver catalyst into contact with each other in the presence of water, wherein the silver catalyst is a catalyst prepared from (a) metallic silver, a silver compound or a mixture thereof, (b) phosphorus, a phosphorus-containing compound or a mixture thereof and (c) a carrier.

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: The invention provides a method for producing an olefin oxide which comprises reacting hydrogen peroxide and an olefin in a solvent containing water, a nitrile compound and a cyclic secondary amine compound, in the presence of a titanosilicate having a pore composed of a 12- or more-membered oxygen ring.

Abstract: A method for producing propylene oxide which comprises reacting propylene, oxygen and hydrogen, in the presence of a titanosilicate and a noble metal supported on silylated active carbon, in a solvent.

Abstract: A method for producing an oxidized compound according to the present invention comprises reacting an organic compound with an oxidizing agent in the presence of titanosilicate (I) or a silylated form thereof, the titanosilicate (I) being obtained by contacting titanosilicate (II) with a structure-directing agent, and the titanosilicate (II) having an X-ray diffraction pattern reproduced in the form of interplanar spacings d of 1.24±0.08 nm, 1.08±0.03 nm, 0.9±0.03 nm, 0.6±0.03 nm, 0.39±0.01 nm and 0.34±0.01 nm.

Abstract: The present invention relates to a method for producing a Ti-MWW precursor comprising: a first step of heating a mixture to prepare a solid, said mixture comprising a structure-directing agent, a compound containing a Group 13 element of the periodic table, a titanium-containing compound (1), a silicon-containing compound and water; and a second step of contacting the solid with a titanium-containing compound (2) and an inorganic acid.

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 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: 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: An object of the present invention is to provide a method for producing an epoxy compound more efficiently from olefin, oxygen, and hydrogen. A method according to the present invention for producing an epoxy compound is a method for producing an epoxy compound from olefin, oxygen, and hydrogen. The method includes: (a) bringing a crystalline titanosilicate catalyst having an MFI structure into contact with a peroxide; and (b) reacting olefin, oxygen, and hydrogen with each other in a liquid phase in the presence of a noble metal catalyst and the crystalline titanosilicate catalyst obtained in the step (a).

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.