Abstract:
A method of producing a mixed manganese ferrite catalyst, and a method of preparing 1,3-butadiene using the mixed manganese ferrite catalyst. Specifically, a method of producing a mixed manganese ferrite catalyst through a coprecipitation method which is performed at a temperature of 10˜40° C., and a method of preparing 1,3-butadiene using the mixed manganese ferrite catalyst through an oxidative dehydrogenation reaction, in which a C4 mixture containing n-butene, n-butane and other impurities is directly used as reactants without performing additional n-butane separation process or n-butene extraction. 1,3-butadiene can be prepared directly using a C4 mixture including n-butane at a high concentration as a reactant through an oxidative hydrogenation reaction without performing an additional n-butane separation process, and 1,3-butadiene, having high activity, can be also obtained in high yield for a long period of time.
Abstract:
A backlight unit and a display apparatus using the same are disclosed. The backlight unit includes a first reflector, a second reflector and at least one light source disposed between the first reflector and the second reflector. The second reflector includes a specular reflection area and a diffuse reflection area. The specular reflection area occupies about 5 to 50% of an entire area of the second reflector.
Abstract:
The invention relates to a vehicle, having a cooling air duct disposed within a battery to move cooling air for cooling the battery, so as to enable same to be compact and improve space utilization, in order to optimize cooling performance within a limited space. The vehicle of the present invention also includes a battery-cooling unit that exchanges heat and cools air ventilated from the passenger compartment and then supplies the air to the battery, so as to use the air from the passenger compartment with minimal effects on the air temperature in the passenger compartment, and more efficiently cool the battery. Further, the vehicle and method for controlling same according to the present invention can detect the temperatures of the battery and of the passenger compartment, and determine whether to cool the air in the passenger compartment using a heat exchanger in accordance with each detected temperature, or control the rotation speed of a ventilation fan, in order to more efficiently cool the battery. Accordingly, overheating of the battery can be prevented, and the service life of the battery can be extended. Additionally, the vehicle and method for controlling same according to the present invention involve a dehumidifying unit for supplying cool air inside the battery and dehumidifying the inside of the battery, so as to control the moisture inside the battery and thereby reduce the possibility of electrical hazards and malfunctions occurring due to condensation.
Abstract:
Disclosed herein is a catalyst for aqueous-phase reforming of biomass-derived polyols, which comprises platinum and copper as active metals and a mixture of magnesia and alumina as a support. The catalyst contains a small amount of platinum and, at the same time, has high hydrogen selectivity and low methane selectivity.
Abstract:
The present invention relates to a one-hand lipstick container, which includes: a container main body having a cylinder stood at the center of a body and a center through-hole formed through the center of the cylinder; a container cover that is rotatably connected to the upper portion of the container main body and has an open inlet formed through the upper surface; a cover holder that is combined by a spiral with the outer side of the cylinder of the container main body in the container cover and vertically ascends/descends by rotational force of the container cover; a door that is hinged to the cover holder to open/close the upper portion of the cover holder, opens a passage when the cover holder descends, and closes the passage when the cover holder ascends; a lipstick housing that is combined by a spiral with the inner side of the center through-hole of the container main body in the cover holder, vertically ascends/descends by rotational force of the cover holder, and ascends/descends in the opposite directions to the ascent/descent directions of the cover holder; and an anti-rotation means that transmits the rotational force of the cover holder to the lipstick housing and vertically guides the lipstick housing to ascend/descend in the opposite directions to the ascent/descent directions of the cover holder.
Abstract:
This invention relates to a bismuth molybdate catalyst, a preparation method thereof, and a method of preparing 1,3-butadiene using the same, and to a bismuth molybdate catalyst, a preparation method thereof, and a method of preparing 1,3-butadiene using the same, in which 1,3-butadiene can be prepared through oxidative dehydrogenation directly using a C4 mixture including n-butene and n-butane as a reactant in the presence of a mixed-phase bismuth molybdate catalyst including α-bismuth molybdate (Bi2Mo3On) and γ-bismuth molybdate (Bi2MoO6). According to this invention, the C4 raffinate, containing many impurities, is used as a reactant, without an additional n-butane separation process, thus obtaining 1,3-butadiene at high yield. Unlike complicated multicomponent-based metal oxides, the catalyst of the invention has simple constituents and synthesis routes, and can be easily formed through physical mixing, and thus is very advantageous in assuring reproducibility and can be directly applied to commercial processes.
Abstract:
This invention relates to a method of preparing a multicomponent bismuth molybdate catalyst by changing the pH of a coprecipitation solution upon coprecipitation and a method of preparing 1,3-butadiene using the catalyst. The multicomponent bismuth molybdate catalyst, coprecipitated using a solution having an adjusted pH, the preparation method thereof, and the method of preparing 1,3-butadiene through oxidative dehydrogenation using a C4 mixture including n-butene and n-butane as a reactant are provided. The C4 raffinate, containing many impurities, is directly used as a reactant without an additional process for separating n-butane or extracting n-butene, thus obtaining 1,3-butadiene at high yield. The activity of the multicomponent bismuth molybdate catalyst can be simply increased through precise pH adjustment upon coprecipitation, which is not disclosed in the conventional techniques. This method can be applied to the increase in the activity of multicomponent bismuth molybdate catalysts reported in the art.
Abstract:
A curling mascara apparatus is disclosed. The curling mascara apparatus has a barrel for holding mascara liquid therein, a cover coupled to a mouth of the barrel, a makeup unit provided on an end of a support cylinder which extends inside the cover along a central axis thereof, and a button manipulating part for manipulating the makeup unit. The makeup unit includes a slide bar which is slidably inserted into the support cylinder and operated in conjunction with the button manipulating part, a lower tong which is integrally provided at an end of the slide bar, an upper tong which is hinged at an end thereof to the lower tong so as to perform a clamping operation, and an elastic member which provides elastic force such that the lower and upper tongs are rotated around a hinge axis to be opened.
Abstract:
A mascara brush is disclosed. The mascara brush of the present invention includes a bristle part (120) for applying mascara to eyelashes, and a comb part (130) for tidying the eyelashes. The bristle part and the comb part are integrally formed with a brush body through an injection molding process, such that the bristles of the bristle part are thin and the comb teeth of the comb part are relatively thick. As such, in the present invention, because the bristle part, for applying mascara to the eyelashes, and a comb part, for tidying the eyelashes, are integrally formed with the brush body by injection molding, manufacturing equipment and manufacturing and assembling processes can be simplified, thus reducing production costs and enhancing workability and productivity.
Abstract:
Provided is a navigation system using a RFID system and a method for displaying a construction area road. The navigation system includes a RFID tag for storing construction information, and upon receipt of a predetermined command, transmitting the construction information; and a RFID reader for transmitting an information read command to the RFID tag, and receiving the construction information in response to the information read command. A bypass path is re-searched depending on the received construction information, and path guidance is performed.