Abstract:
PURPOSE: A method for eliminating a nitrogen compound is provided to efficiently and economically remove an aromatic nitrogen compound using a simple extraction process using imidazole-based ionic liquid containing zinc. CONSTITUTION: A method for eliminating a nitrogen compound from hydrocarbons uses imidazole-based ionic liquid containing zinc which is generated by mixing ZnX_2 with imidazolium alkyl sulfate which is marked as a chemical formula 1. In the chemical formula 1, X is Cl, Br, or I and R1 and R2 are hydrogen or an alkyl group with C1-C10. The nitrogen compound is an aromatic nitrogen compound. A method for eliminating the nitrogen compound from hydrocarbons comprises a step of extracting the nitrogen compound from the hydrocarbons into the ionic liquid by contacting the imidazole-based ionic liquid containing zinc with the hydrocarbons and a step of separating the ionic liquid from the hydrocarbons.
Abstract:
본 발명은 알킬렌 옥사이드와 이산화탄소로부터 알킬렌 카보네이트를 제조하는 방법 및 그를 위한 1,3-디알킬이미다졸륨 디할로디알킬포스페이토아연 촉매에 관한 것이다. 본 발명의 제조방법에 따르면, 알킬렌 카보네이트를 온화한 조건에서 짧은 시간에 고수율 및 고순도로 제조할 수 있으며, 본 발명에 따른 1,3-디알킬이미다졸륨 디할로디알킬포스페이토아연 촉매는 가격이 저렴할 뿐만 아니라 열 안정성이 뛰어나 분해되지 않기 때문에 할라이드 부산물을 생성하지 않는다.
Abstract:
PURPOSE: A method for preparing alkylene carbonate from alkylene oxide and carbon dioxide is provided to quickly obtain alkylene carbonate of high yield and high purity. CONSTITUTION: A method for preparing alkylene carboante of chemical formula 3 comprises a step of reacting alkylene oxide of chemical formula 2 with carbon dioxide under the presence of 1,3-dialkylimidazolium dihalodialkylphosphato zinc catalyst of chemical formula 1. The reaction is performed at 80-140°C and 10-100 atm. The 1,3-dialkylimidazolium dihalodialkylphosphato zinc is prepared by reacting 1,3-dialkylimidazolium dialkylphosphate of chemical formula 4 with zinc halide of chemical formula 5(ZnX)2.
Abstract:
PURPOSE: A method for manufacturing aliphatic diurea is provided to prepare diurea with high yield and high selectivity in a mild condition using water as a reaction solvent and catalyst and to simplify a refining process of products. CONSTITUTION: A method for manufacturing aliphatic diurea comprises a step of reacting C2-8 aliphatic diamine with urea to prepare aliphatic diurea using water as a reaction solvent and a catalyst. The C2-8 aliphatic diamine is 1,2-ethanediamine, 1,3-propanediamine, 1,4-butanediamine, 1,6-hexanediamine, 1,8-octane diamine, 1,2-cyclohexane diamine, 1,3-cyclohexanediamine, 1,4-cyclohexanediamine, 1,3-cyclohexane bismethylamine or 1,4-cyclohexane bismethylamine.
Abstract:
본 발명은 철을 포함하는 이미다졸륨계 이온성 액체를 사용하여 탄화수소 유분으로부터 황 화합물을 용이하고 경제적으로 제거하는 방법에 관한 것이다. 본 발명에 따른 철을 함유하는 이미다졸륨계 이온성 액체는 석유계 탄화수소 유분 중에 포함된 황 화합물, 특히 방향족 황 화합물을 간단한 추출 공정을 통하여 매우 효율적으로 제거할 수 있다. 이미다졸륨계 이온성 액체, 철, 황 화합물, 탄화수소 유분
Abstract:
An imidazolium-based amphoteric ion is provided to ensure high electrochemical stability and to improve rechargeable performance of a lithium secondary battery. An imidazolium-based amphoteric ion has a structure indicated as the chemical formula 1. In the chemical formula 1, m is an integer of 1 or 2; n is an integer of 3 or 4; R1 is a C1-C6 alkyl group, C1-C6 arkenyl group or C1-C6 alkylester group; and R2 is a C1-C6 alkyl group or C1-C6 alkenyl group.
Abstract:
A method for preparing an alkylene trithiocarbonate is provided to reduce the generation of polymer by-product and to allow the reaction to be carried out under mild condition with a high selectivity. A method for preparing an alkylene trithiocarbonate represented by the formula 2 comprises the step of reacting an alkylene carbonate represented by the formula 1 and carbon disulfide (CS2) in the presence of an imidazolium halogen compound catalyst, wherein R1 and R2 are independently H, a C1-C4 alkyl group or a phenyl group. The amount of the imidazolium halogen compound catalyst is 0.005-0.1 mol to 1 mol of the alkylene carbonate.
Abstract:
A method for efficiently preparing a fluorinated alkoxysilane derivative is provided to increase the yield of a reaction of a chlorosilane compound and a fluorinated alcohol using a tertiary amine compound as a media with little formation of side products and recover the products very simply. A method for preparing a fluorinated alkoxysilane derivative represented by the formula(1) comprises a step of reacting a fluorinated alcohol of RfOH with a chlorosilane compound of R1R2R3Si-Cl in the presence of a tertiary amine compound represented by the formula(4b) or (4c) at a temperature of -20 to 50 deg.C, wherein each R1, R2, R3 and R4 is C1-6 hydrocarbonyl or phenyl, Rf is C1-6 fluorinated hydrocarbonyl having 1-8 fluorine atom(s). The reaction is performed under a non-solvent or a non-polar solvent condition.
Abstract:
본 발명은 주 흡수제로 3급 디알킬알칸올아민, 속도증진제로 2급 알칸올아민, 재생촉진제로 폴리알킬렌 글리콜 모노메틸 에테르가 포함된 수용액을 이산화탄소 흡수제로 사용하는 것에 관한 것으로, 본 발명에 따른 폴리알킬렌 글리콜 모노메틸 에테르를 포함하는 알칸올아민계 이산화탄소 흡수제와 이를 이용한 이산화탄소 흡수방법 및 분리방법은 이산화탄소 흡수능이 우수하고 이산화탄소 흡수속도가 빠를 뿐만 아니라 종래의 알칸올아민계 흡수제에 비해 흡수제 재생온도가 현저히 낮아 흡수 공정에 소요되는 전체 에너지 소비를 크게 줄일 수 있으며, 또한 낮은 재생온도로 인해 회수된 이산화탄소가 수분 및 흡수제 증기로 오염되는 것을 방지할 수 있다.