摘要:
Disclosed is a method for enhancing a yield of an α,β-unsaturated carboxylic acid obtained by liquid-phase oxidation reaction of an olefin or an α,β-unsaturated aldehyde. In particular, there is provided a method for producing an α,β-unsaturated carboxylic acid, wherein the method includes the step of carrying out oxidation reaction of an olefin or an α,β-unsaturated aldehyde in a liquid phase to obtain a reaction mixture containing an α,β-unsaturated carboxylic acid and an α,β-unsaturated carboxylic acid anhydride and the step of bringing the α,β-unsaturated carboxylic acid anhydride into contact with an alcohol or water to obtain an α,β-unsaturated carboxylic acid resulting from decomposition of the α,β-unsaturated carboxylic acid anhydride.
摘要:
Disclosed is a method for enhancing a yield of an α,β-unsaturated carboxylic acid obtained by liquid-phase oxidation reaction of an olefin or an α,β-unsaturated aldehyde. In particular, there is provided a method for producing an α,β-unsaturated carboxylic acid, wherein the method includes the step of carrying out oxidation reaction of an olefin or an α,β-unsaturated aldehyde in a liquid phase to obtain a reaction mixture containing an α,β-unsaturated carboxylic acid and an α,β-unsaturated carboxylic acid anhydride and the step of bringing the α,β-unsaturated carboxylic acid anhydride into contact with an alcohol or water to obtain an α,β-unsaturated carboxylic acid resulting from decomposition of the α,β-unsaturated carboxylic acid anhydride.
摘要:
Disclosed is a method for producing an α,β-unsaturated carboxylic acid by oxidizing an olefin or an α,β-unsaturated aldehyde in a liquid phase in the presence of a noble metal catalyst, which can ensure operational safety at the time of stopping the reaction and prevent deterioration of the noble metal catalyst. The method for producing the α,β-unsaturated carboxylic acid by an oxidation reaction in which the olefin or the α,β-unsaturated aldehyde is oxidized in the liquid phase in the presence of the noble metal catalyst in a reactor, includes a step of stopping the oxidation reaction by supplying an inert gas to the reactor.
摘要:
A control apparatus for a hybrid vehicle includes an internal combustion engine and a generator motor, a capacitor, and a driving force assisting unit. Further, the control device includes a switching unit that selects an appropriate traveling range from a plurality of traveling ranges including at least a normal traveling range and a charging priority range for preferentially charging the capacitor and switches the range, and a threshold value increasing unit that increases, when the charging priority range is selected by the switching unit, the predetermined determination threshold value as compared to when the normal traveling range is selected by the switching unit.
摘要:
A control apparatus for a hybrid vehicle includes an internal combustion engine and a generator motor, a capacitor, and a driving force assisting unit. Further, the control device includes a switching unit that selects an appropriate traveling range from a plurality of traveling ranges including at least a normal traveling range and a charging priority range for preferentially charging the capacitor and switches the range, and a threshold value increasing unit that increases, when the charging priority range is selected by the switching unit, the predetermined determination threshold value as compared to when the normal traveling range is selected by the switching unit.
摘要:
A control apparatus for a hybrid vehicle includes an internal combustion engine and a generator motor, a capacitor, and a driving force assisting unit. Further, the control device includes a switching unit that selects an appropriate traveling range from a plurality of traveling ranges including at least a normal traveling range and a charging priority range for preferentially charging the capacitor and switches the range, and a threshold value increasing unit that increases, when the charging priority range is selected by the switching unit, the predetermined determination threshold value as compared to when the normal traveling range is selected by the switching unit.
摘要:
There is provided a friction stir spot joining device wherein stirring-related members are unitized to form a unitized stirring unit and an opening is formed in a friction stir spot joining device body for housing the unitized stirring unit therein. A stirring motor, a stirring shaft and a power transmission mechanism are unitized to form a stirring unit, and bearings of a linear motion guide are fixed to the stirring unit immediately under the stirring unit, and a ball nut is fixed to the back face of the stirring unit, wherein the friction stir spot joining device body is opened to form the opening at a rear upper portion through which the stirring unit is caused to move inside thereof.
摘要:
A fiber array device for arraying fibers three-dimensionally, includes: a fiber winding device onto which a fiber is wound; and a fiber supply device that supplies the fiber to the fiber winding device, wherein the fiber supply device is provided with a movable guide that supplies fiber to the fiber winding device while undergoing relative displacement, and wherein the fiber winding device has a fiber winding bobbin that winds fiber onto its circumference as it rotates around a shaft, and fiber array flat plates a plurality of which are stacked respectively at a plurality of predetermined positions on the circumference of the fiber winding bobbin and on whose respective external surfaces the fibers are arrayed. In addition, there is provided a fiber array jig. It is thereby possible to array fibers three-dimensionally extremely efficiently at a high density and with a high degree of accuracy.
摘要:
It provides at a low price a compressor capable of preventing a waste oil pipe from falling off and curbing leakage of lubricating oil and oscillation of the pipe. An L-shaped waste oil pipe 8 for returning lubricating oil 20 to a bottom of a motor chamber 22 is connected to a waste oil passage 33 of a main frame 3 so as to put at least a part of the waste oil pipe 8 in elastic contact with an internal surface of an airtight container 2.
摘要:
An aluminum alloy material is welded by performing friction stir welding to form a welded section in an aluminum alloy welded component. The aluminum alloy material contains Mg: 0.3-6.0% (mass %, hereinafter the same), Cu: 0.2% or less, Si: 0.1% or less, Fe: 0.1% or less, the balance being Al and inevitable impurities. Second phase particles dispersed in the aluminum alloy material have a grain size of 5 μm or less as observed with an optical microscopic. Because the second phase particles are homogeneously dispersed in a welded section equivalent portion of the aluminum alloy welded component as compared to other portions, variations in pit formation caused by etching during anodizing are reduced, thereby eliminating color tone variations in the anodized coating formed on the aluminum alloy welded component.