Abstract: The present invention relates to a zinc ferrite catalyst, a method of producing the same, and a method of preparing 1,3-butadiene using the same. Specifically, the present invention relates to a zinc ferrite catalyst which is produced in a pH-adjusted solution using a coprecipitation method, a method of producing the same, and a method of preparing 1,3-butadiene using the same, in which the 1,3-butadiene can be prepared directly using a C4 mixture including n-butene and n-butane through an oxidative dehydrogenation reaction. The present invention is advantageous in that 1,3-butadiene can be obtained at a high yield directly using a C4 fraction without performing an additional process for separating n-butene, as a reactant, from a C4 fraction containing impurities.

Abstract: The present invention relates to a method for producing hydrocarbons from biomass or organic waste. The present invention provides: a method for effectively producing diverse hydrocarbons by using a raw material comprising mixed organic acids that can be obtained by anaerobic fermentation which is a fermentation process in biogasification technology; and a method for producing diverse products such as fuel, lube base oil and aromatics by using a raw material comprising mixed organic acids.

Abstract: A method of preparing multicomponent bismuth molybdate catalysts composed of four metal components and a method of preparing 1,3-butadiene using the catalyst, and particularly, to multicomponent bismuth molybdate catalysts composed of a divalent cationic metal, a trivalent cationic metal, bismuth and molybdenum, a preparation method thereof, and a method of preparing 1,3-butadiene from a C4 mixture including n-butene and n-butane using oxidative dehydrogenation are described.

Abstract: An electrochemical test cell, containing an anode comprising a metal as an active component; a cathode comprising a porous chemically inert tube containing an active material compatible with the metal of the anode; and an electrolyte; wherein the only metal in contact with the electrolyte is the metal of the anode, is provided. This test cell is useful in a method to evaluate various combinations of materials for suitability as a combination for preparation of a battery.

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.

Abstract: Disclosed is a nano-sized Cu based catalyst and a method of preparing the same including dissolving, in an aqueous solution, a first component comprising a Cu precursor, a second component precursor comprising one or more selected from the group consisting of a transition metal, an alkaline earth metal and a Group IIIb metal, and a third component precursor comprising one or more selected from the group consisting of alumina, silica, silica-alumina, magnesia, titania, zirconia and carbon and then performing stirring; precipitating the stirred mixture solution using Na2CO3 and NaOH to form a catalyst precursor precipitate; and washing and filtering the formed catalyst precursor precipitate. Also a method of preparing alcohol is provided, including reacting hydrogen with carboxylic acid including a single acid or an acid mixture of two or more acids derived from a microorganism fermented solution, using the nano-sized Cu based catalyst.

Abstract: The present invention relates to a method of economically preparing paraffin compounds corresponding to gasoline fuel or lubricating base oil using volatile fatty acids (VFAs) derived from biomass.

Abstract: An electrochemical device, having an anode containing magnesium; a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference; and an electrolyte obtained by admixture of a magnesium salt of a non-nucleophilic base comprising nitrogen and aluminum trichloride in an ether solvent is provided. As sulfur is stable to a voltage of at least 3.2 V relative to a magnesium reference, a magnesium-sulfur electrochemical device is specifically provided.

Abstract: An electrochemical device, having an anode containing magnesium; a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference; and an electrolyte containing an electrochemically active magnesium salt obtained by mixing an organic magnesium compound with an aluminum compound in an ether solvent and separation of the electrochemically active salt from the reaction mixture is provided. The separated electrochemically active salt is stable and safe to handle in comparison to conventional Grignard based electrolyte systems.

Abstract: A method of producing 1,3-butadiene by the oxidative dehydrogenation of n-butene using a continuous-flow dual-bed reactor designed such that two kinds of catalysts charged in a fixed-bed reactor are not physically mixed. More particularly, a method of producing 1,3-butadiene by the oxidative dehydrogenation of n-butene using a C4 mixture including n-butene and n-butane as reactants and using a continuous-flow dual-bed reactor in which a multi-component bismuth molybdate catalyst and a zinc ferrite catalyst having different reaction activity in the oxidative dehydrogenation reaction of n-butene isomers (1-butene, trans-2-butene, cis-2-butene).

Abstract: There is provided a transformer having a minimized thickness. The transformer includes: insulating layers; and coil units including primary and secondary coils disposed on the insulating layers to have a common center.

Abstract: A mobile communication terminal including a display module configured to display a portion of a display object; and a control module configured to control the display module to display screen location information using a first box and a second box, the screen location information indicating a relative location of the portion of the display object with respect to an entire portion of the display object. Further, the control module is further configured to control the display module to move or enlarge/reduce the second box by moving or enlarging/reducing the display object in response to a touching manner of the display module, and the second box is disposed inside the first box and represents the relative location and a size of the portion of the display object with respect to the entire portion of the display object.

Abstract: An electrochemical device, having an anode containing magnesium; a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference; and an electrolyte containing a solvent and a LiCl complex of a magnesium halide salt of a sterically hindered secondary amine is provided. In a preferred embodiment the electrolyte contains tetrahydrofuran and 2,2,6,6-tetramethylpiperidinyl-magnesium chloride-lithium chloride complex.

Abstract: The present invention relates to a preparation method for alcohol by reacting carboxylic acid, alcohol, and hydrogen using hydrogenation catalysts. More specifically, the invention relates to a method for preparing alcohol by performing esterification and hydrocracking in a one-step process using hydrogenation catalysts instead of a two-step process. According to the invention, alcohol is prepared from carboxylic acid through esterification and hydrogenation in a one-step process using hydrogenation catalysts. Therefore, production costs and by-product treatment costs can be reduced in comparison to a two-step process. In addition, the invention is effective and economical since it can produce alcohol at relatively high yield by a simple process. Further, the invention allows high yield at relatively lower pressure when compared to alcohol production from carboxylic acid through hydrogenation without esterification and solves the problems of leaching by catalysts.

Abstract: A mobile communication terminal including a display module configured to display a portion of a display object; and a control module configured to control the display module to display screen location information using a first box and a second box, the screen location information indicating a relative location of the portion of the display object with respect to an entire portion of the display object. Further, the control module is further configured to control the display module to move or enlarge/reduce the second box by moving or enlarging/reducing the display object in response to a touching manner of the display module, and the second box is disposed inside the first box and represents the relative location and a size of the portion of the display object with respect to the entire portion of the display object.

Abstract: An electrochemical device, having an anode containing magnesium; a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference; and an electrolyte containing an electrochemically active magnesium salt obtained by mixing an organic magnesium compound with an aluminum compound in an ether solvent and separation of the electrochemically active salt from the reaction mixture is provided. The separated electrochemically active salt is stable and safe to handle in comparison to conventional Grignard based electrolyte systems.

Abstract: An electrochemical device, having an anode containing magnesium; a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference; and an electrolyte obtained by admixture of a magnesium salt of a non-nucleophilic base comprising nitrogen and aluminum trichloride in an ether solvent is provided. As sulfur is stable to a voltage of at least 3.2 V relative to a magnesium reference, a magnesium-sulfur electrochemical device is specifically provided.

Abstract: The present invention relates to a method of forming a flash memory device, which is capable of forming floating gates. According to a method of forming a flash memory device in accordance with the present invention, isolation mask patterns are first formed over a semiconductor substrate. Trenches are formed by performing an etching process using the isolation mask patterns. Isolation layers are formed between the isolation mask patterns, including the insides of the respective trenches. The isolation mask patterns are removed. Tunnel dielectric layers and crystallized first conductive layers are sequentially formed over the exposed semiconductor substrate. A dielectric layer and a second conductive layer are formed over the isolation layers and the first conductive layers.

Abstract: A mobile communication terminal which displays screen location information and a method of controlling the mobile communication terminal are provided. When a portion of a display object is displayed on a display screen of a display module, the mobile communication terminal displays screen location information regarding the relative location of the display object portion to the entire display object. Thus, a user can easily determine which part of the display object is currently being displayed. In addition, it is possible to prevent unnecessary power consumption caused by performing screen loading while continuously moving the display object portion.

Abstract: A power line communication method is provided, which divides the entire interval for transmitting power and data signals into a power transmission interval and a data transmission interval, and carries one or a plurality of data signals at the data transmission interval in the divided intervals.