摘要:
The present invention relates to a method of producing propylene oxide, comprising a step of reacting propylene and oxygen in the presence of a silver catalyst and water, wherein the silver catalyst is a catalyst prepared from (a) metallic silver, a silver compound or a mixture thereof, (b) a tellurium compound and (c) a carrier.
摘要:
A process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a catalyst comprising a copper oxide and a tellurium oxide.
摘要:
The present invention relates to a direct conversion of olefin to olefin oxide, which are important and versatile intermediates used in the production of a large variety of valuable consumer products such as polyurethane foams, polymers, alkylene glycol, cosmetics, food emulsifiers and as fumigants and insecticides. More specifically, the present invention provides a process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a halogen compound additive and a catalyst comprising copper, ruthenium or both thereof.
摘要:
A process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a catalyst comprising (a) ruthenium metal or a ruthenium oxide, (b) manganese oxide and (c) alkaline metal component or alkaline earth metal component.
摘要:
The present invention relates to a direct conversion of olefin to olefin oxide, which are important and versatile intermediates used in the production of a large variety of valuable consumer products such as polyurethane foams, polymers, alkylene glycol, cosmetics, food emulsifiers and as fumigants and insecticides. More specifically, the present invention provides a process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a halogen compound additive and a catalyst comprising copper, ruthenium or both thereof.
摘要:
A catalyst for the production of methacrylic acid comprising a heteropolyacid compound containing phosphorus and molybdenum is regenerated by a method comprising the steps of drying a mixture containing a deactivated catalyst, an ammonium ion, a nitrate ion and water, molding the dried mixture, firstly calcining the molded product in an atmosphere of an oxidizing gas at a temperature of 360 to 410° C., and then secondly calcining the product in an atmosphere of a non-oxidizing gas at a temperature of 420 to 500° C. The regenerated catalyst has substantially the same catalytic activity as a fresh catalyst in a gas phase catalytic oxidation reaction of methacrolein, isobutylaldehyde, isobutane or isobutyric acid to prepare methacrylic acid.
摘要:
A catalyst for the production of methacrylic acid comprising a heteropolyacid compound containing phosphorus and molybdenum is regenerated by a method comprising the steps of drying a mixture containing a deactivated catalyst, an ammonium ion, a nitrate ion and water, molding the dried mixture, firstly calcining the molded product in an atmosphere of an oxidizing gas at a temperature of 360 to 410° C., and then secondly calcining the product in an atmosphere of a non-oxidizing gas at a temperature of 420 to 500° C. The regenerated catalyst has substantially the same catalytic activity as a fresh catalyst in a gas phase catalytic oxidation reaction of methacrolein, isobutylaldehyde, isobutane or isobutyric acid to prepare methacrylic acid.
摘要:
A process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a catalyst comprising (a) ruthenium metal or a ruthenium oxide, (b) manganese oxide and (c) alkaline metal component or alkaline earth metal component.
摘要:
A process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a catalyst comprising a copper oxide and a tellurium oxide.
摘要:
A process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a catalyst comprising (a) copper oxide, (b) ruthenium metal or ruthenium oxide and (c) alkaline metal component or alkaline earth metal component.