Abstract: Provided are a method for preparing a three-dimensional lithium adsorbent, which produces a lithium adsorbent having a high lithium adsorption rate per unit volume and unit mass, strong durability, and various shapes, and a three-dimensional lithium adsorbent using the same.

Abstract: The present invention relates to an organic borate-based catalyst including a compound represented by the following Formula 1 and a hydroxyl group-containing compound, a method for preparing an isobutene oligomer using the same and an isobutene oligomer prepared thereby: wherein R0, R1 to R4, o, p, q and r are described therein.

Abstract: An aspect of the present invention provides a rechargeable battery which makes placement of the electrode assembly in the case during assembly easy. The rechargeable battery includes an electrode assembly including a first electrode, a separator, and a second electrode, a case housing the electrode assembly and having an opening in a plane parallel to a flat side surface of the electrode assembly, the case being electrically connected to the first electrode, a cover closing the opening in the case, and an electrode terminal mounted to a terminal opening in the case and connected to the second electrode, wherein the electrode terminal and the second electrode are insulated from the case.

Abstract: A method for separating polybutene, the method including: (1) introducing a polybutene solution into a distillation column, the solution including polybutene, a halogenated hydrocarbon solvent, and a non-polar hydrocarbon solvent and having a viscosity of 1 cp to 50 cp measured at 25° C. using a rotational viscometer; (2) collecting an upper stream including the halogenated hydrocarbon solvent and a portion of the non-polar hydrocarbon solvent from an upper portion of the distillation column, and collecting a lower stream including the polybutene and a remaining portion of the non-polar hydrocarbon solvent from a lower portion of the distillation column, where the lower stream has a viscosity of 10 cp to 150 cp; and (3) separating the remaining portion of the non-polar hydrocarbon solvent and the polybutene from the lower stream.

Abstract: The present invention pertains to a high-elasticity nylon cord and a method for producing same. The purpose of the present invention is to produce a nylon cord having a high elastic modulus by reducing the moisture content of a raw cord through a drying process during the production of the nylon cord.

Abstract: Dual-functional energy storage systems that couple ion extraction and recovery with energy storage and release are provided. The dual-functional energy storage systems use ion-extraction and ion-recovery as charging processes. As the energy used for the ion extraction and ion recovery processes is not consumed, but rather stored in the system through the charging process, and the majority of the energy stored during charging can be recovered during discharging, the dual-functional energy storage systems perform useful functions, such as solution desalination or lithium-ion recovery with a minimal energy input, while storing and releasing energy like a conventional energy storage system.

Abstract: Electrochemical cells and methods for the reduction of aldehydes and ketones via selective hydrogenolysis of their carbonyl bonds are provided. The electrochemical cells and methods use zinc-containing electrocatalytic cathodes that promote electrochemical hydrogenolysis of the carbonyl bond of the aldehyde or ketone over hydrogenation in an acidic electrolyte solution. As a result, the carbonyl-groups of the aldehydes and ketones are reduced into alkyl groups with high relative selectivities.

Abstract: Electrochemical systems and methods for removing and recovering phosphorus, in the form of phosphates, from aqueous solutions are provided. The removal of the phosphates takes place in an electrochemical cell having an electrode that includes bismuth (Bi), zinc (Zn), copper (Cu), iron (Fe), or an oxide thereof. During the removal of phosphates from aqueous solution, the metal (Bi, Zn, Cu, or Fe) and/or metal oxide of the electrode is converted into its corresponding metal phosphate within the electrode via a reversible conversion reaction. The phosphate stored in the electrode during the removal step is subsequently released into a recovery solution via electrochemical reduction of the metal phosphate back into a metal.

Abstract: A catalyst composition and a method for preparing a hydrocarbon resin using the same are disclosed herein. In some embodiments, a catalyst composition includes an oxonium ion-based catalyst and an additive. In some embodiments, a method includes polymerizing a monomer mixture in the presence of a catalyst composition, wherein the monomer mixture comprises a C5 unsaturated hydrocarbon monomer, a C9 unsaturated hydrocarbon monomer, or a mixture thereof, wherein the catalyst composition comprising a catalyst represented by the following Formula 1 and an additive represented by the following Formula 2.

Abstract: Tandem electrodialysis (ED) cell systems and methods for using the tandem ED cell systems to extract and recover ions from ion-containing solutions are provided. The tandem ED cell systems are composed of ion-extraction and ion-recovery ED cells. A redox couple contained in the anolyte of the ion-extraction ED cell is different from a redox couple contained in the catholyte of the ion-extraction ED cell. The electrode reactions in the ion-extraction ED cell are reversed in the ion-recovery ED cell, with the anolyte and catholyte of the two ED cells swapped and continuously circulated. As a result, the redox species in the anolyte and catholyte of the two cells are never depleted, which allows for achieving ion extraction and ion recovery with the use of a minimal amount of the redox couples.

Abstract: Dual-functional energy storage systems that couple ion extraction and recovery with energy storage and release are provided. The dual-functional energy storage systems use ion-extraction and ion-recovery as charging processes. As the energy used for the ion extraction and ion recovery processes is not consumed, but rather stored in the system through the charging process, and the majority of the energy stored during charging can be recovered during discharging, the dual-functional energy storage systems perform useful functions, such as solution desalination or lithium-ion recovery with a minimal energy input, while storing and releasing energy like a conventional energy storage system.

Abstract: Disclosed is a press forming apparatus including a lower die assembly having a lower die, an upper die assembly having an upper die configured to be movable in a first direction relative to the lower die, a cam slider configured to be movable in a second direction relative to the lower die, and a conversion mechanism configured to convert a movement of the upper die assembly in the first direction into a movement of the cam slider in the second direction.

Abstract: Dual-functional energy storage systems that couple ion extraction and recovery with energy storage and release are provided. The dual-functional energy storage systems use ion-extraction and ion-recovery as charging processes. As the energy used for the ion extraction and ion recovery processes is not consumed, but rather stored in the system through the charging process, and the majority of the energy stored during charging can be recovered during discharging, the dual-functional energy storage systems perform useful functions, such as solution desalination or lithium-ion recovery with a minimal energy input, while storing and releasing energy like a conventional energy storage system.

Abstract: The present invention provides a method for preparing a polybutene oligomer including a step of oligomerizing a polymerization solution including a halogenated hydrocarbon solvent, a nonpolar hydrocarbon solvent and an isobutene monomer in the presence of an organometal catalyst.

Abstract: The present invention relates to a catalyst composition including an oxonium ion-based catalyst and an aluminum-based cocatalyst, and a method for preparing an isobutene-based polymer using the same.

Abstract: Electrochemical cells for the oxidation of 5-hydroxymethylfurfural are provided. Also provided are methods of using the cells to carry out the oxidation reactions. The electrochemical cells and methods use catalytic copper-based anodes to carry out the electrochemical oxidation reactions.

Abstract: The present invention relates to a method for halogenating an isobutene-isoprene copolymer by using an organic hypochlorite. By using the method of the present invention, a hydrogen halide byproduct may be rapidly recycled into a halogenating agent and reused. As a result, a halogenated isobutene-isoprene copolymer having the high content of secondary allyl halogen functional groups may be prepared by increasing the participation ratio of the halogenating agent in reaction and suppressing the rearrangement of the secondary allyl halogen functional groups. The halogenated isobutene-isoprene copolymer prepared according to the present invention may be effectively used in the crosslinking reaction with other rubber, and is industrially useful.

Abstract: The present invention relates to a catalyst composition including an imidazolinium ion-based catalyst and an aluminum-based cocatalyst, and a method for preparing an isobutene-isoprene copolymer using the same.

Abstract: The present invention provides an organometal catalyst having a cationic metal complex and a borate-based bulky anion, where the metal is one or more selected from the group consisting of metals in group 13, a method for preparing the same, and a method for preparing an oligomer or a polymer using the same.

Abstract: Bismuth-based, chloride-storage electrodes and rechargeable electrochemical cells incorporating the chloride-storage electrodes are provided. Also provided are methods for making the electrodes and methods for using the electrochemical cells to remove chloride ions from a sample. The chloride-storage electrodes, which are composed of bismuth metal, can store chloride ions in their bulk by forming BiOCl via an oxidation reaction with bismuth in the presence of an oxygen source.