摘要:
A process for producing allyl alcohol, comprising a step (1) of producing allyl acetate from propylene, acetic acid and oxygen in a gas phase in the presence of a catalyst comprising a support having supported thereon a catalyst component containing a compound containing alkali metal and/or alkaline earth metal, an element belonging to Group 11 of the Periodic Table or a compound containing at least one of these elements, and palladium, and a step (2) of hydrolyzing the ally acetate obtained in the step (1) using an acid catalyst to produce allyl alcohol, wherein the conversion of the starting material acetic acid in the step (1) is 60% or more.
摘要:
A process for producing a lower aliphatic carboxylic acid ester by a gas phase esterification reaction starting from a lower aliphatic carboxylic acid and a lower olefin, comprising adding a lower alcohol corresponding to a hydrate of a lower olefin to the gas phase reaction product, condensing a lower aliphatic carboxylic acid and the lower alcohol and while allowing the conversion into a lower aliphatic carboxylic acid ester to proceed, separating the lower aliphatic carboxylic acid ester. Productivity is increased due to the improvement of the conversion of a lower aliphatic carboxylic acid.
摘要:
A process for producing a lower aliphatic carboxylic acid alkenyl, comprising reacting a lower olefin, a lower aliphatic carboxylic acid and oxygen in a gas phase in the presence of a catalyst comprising a support having supported thereon a catalyst component containing a compound containing alkali metal and/or alkaline earth metal, an element belonging to Group 11 of the Periodic Table or a compound containing at least one of these elements, and palladium, wherein the outflow ratio of the compound containing alkali metal and/or alkaline earth metal is from 1.0 (10−5 to 0.01%/h.
摘要:
A process for producing a lower aliphatic carboxylic acid alkenyl, comprising reacting a lower olefin, a lower aliphatic carboxylic acid and oxygen in a gas phase in the presence of a catalyst comprising a support having supported thereon a catalyst component containing a compound containing alkali metal and/or alkaline earth metal, an element belonging to Group 11 of the Periodic Table or a compound containing at least one of these elements, and palladium, wherein the conversion of the lower aliphatic carboxylic acid is 80% or less or the concentration of the lower aliphatic carboxylic acid at the reactor outlet is 0.5 mol % or more.
摘要:
Provided is a radiation detector that prevents a decline in detection efficiency as well as having excellent temporal characteristics. The radiation detector 1, which detects a radiation, includes a scintillator array 10 having a plurality of scintillator cells 11, a photodetector array 20 having a plurality of photodetectors 21, and a photodetector array 30 having a plurality of photodetectors 31. The plurality of photodetectors 21 and the plurality of photodetectors 31 are solid-state photodetectors that can transmit a gamma ray G1, G2. The scintillator cell 11 is separated into a plurality of light emitting regions 11a, 11b by a reflecting region 12, and the reflecting region 12 extends between the incident surface 10a side and the back surface 10b side along a surface SP that is inclined with respect to the incident surface 10a and the back surface 10b.
摘要:
Provided are a composition containing a quantum dot fluorescent body, a molded body of a quantum dot fluorescent body dispersion resin, a structure containing a quantum dot fluorescent body, a light-emitting device, an electronic apparatus or a mechanical device, and a method for producing the molded body. The quantum dot fluorescent body is dispersed in a cycloolefin (co)polymer, which is a dispersion resin, to form the composition containing a quantum dot fluorescent body. The composition containing the quantum dot fluorescent body is molded, forming the molded body of the quantum dot fluorescent body dispersion resin. A gas barrier layer is formed at a portion or the entirety of the surface of the molded body of the quantum dot fluorescent body dispersion resin. A light-emitting device is configured using the composition containing the quantum dot fluorescent body as a sealing material that seals an LED chip.
摘要:
To provide an efficient method of producing an epoxy compound comprising reacting hydrogen peroxide and acetonitrile with the carbon-carbon double bond of an organic compound having a carbon-carbon double bond. A method of producing an epoxy compound comprising epoxidizing the carbon-carbon double bond of an organic compound having a carbon-carbon double bond in the presence of acetonitrile by using hydrogen peroxide as an oxidizing agent, wherein the reaction proceeds while controlling the acetonitrile concentration in the reaction system in the range of 0.6-5 mol/L by using a solvent containing an alcohol.
摘要:
Provided is a piezoelectric material having a high Curie temperature and satisfactory piezoelectric characteristics, the piezoelectric material being represented by the following general formula (1): A(ZnxTi(1-x))yM(1-y)O3 (1) where A represents a Bi element, M represents at least one element selected from Fe, Al, Sc, Mn, Y, Ga, and Yb; x represents a numerical value of 0.4≦x≦0.6; and y represents a numerical value of 0.17≦y≦0.60.
摘要:
Provided are a composition that contains a quantum dot fluorescent body and that is able to suppress quenching of the quantum dot fluorescent body, a molded body of a quantum dot fluorescent body dispersion resin, a structure containing a quantum dot fluorescent body, a light-emitting device, an electronic apparatus, or a mechanical device, and a method for producing the molded body of a quantum dot fluorescent body dispersion resin.A quantum dot fluorescent body is dispersed in a cycloolefin (co)polymer that is a dispersion resin to form the composition containing a quantum dot fluorescent body, and the composition containing a quantum dot fluorescent body is molded, forming the molded body of the quantum dot fluorescent body dispersion resin, and a gas barrier layer that reduces the passage of oxygen to the molded body of the quantum dot dispersion resin is formed at a portion or the entirety of the surface of the molded body of the quantum dot fluorescent body dispersion resin, and furthermore, a light-emitting device is configured using the composition containing the quantum dot fluorescent body as a sealing material that seals an LED chip.
摘要:
A novel process for producing a polyfunctional epoxy monomer is provided that facilitates separation of an aqueous layer catalyst from a reaction solution and has satisfactory hydrogen peroxide efficiency by reacting an aqueous hydrogen peroxide solution with a polyolefin without using an organic solvent and under mild conditions. The process in the present invention is a process for producing a corresponding epoxy compound by reacting an organic compound having a carbon-carbon double bond with hydrogen peroxide present in an aqueous hydrogen peroxide solution to epoxidate the double bond, wherein a tungsten compound and tertiary amine are used as reaction catalysts.