Abstract:
PURPOSE: A BSCF-5582 oxygen membrane coated with LSTF-6437 and a method for manufacturing the same are provided to improve the oxygen penetration characteristic and the carbon dioxide resistance characteristic of the membrane. CONSTITUTION: A BSCF-5582 oxygen membrane coated with LSTF-6437 is a Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-8 composition-based membrane, and La_0.6Sr_0.4Ti_0.3Fe_0.7O_3-8 composition is coated on the surface of the membrane. BSCF-5582 powder and LSTF-6437 powder are prepared(S100). The BSCF-5582-based membrane is prepared(S200). LSTF-6437-based coating liquid is prepared(S300). The LSTF-6437-based coating liquid is coated on the surface of the BSCF-5582-based membrane(S400). The LSTF-6437-based coating liquid coated BSCF-5582-based membrane is dried and sintered(S500).
Abstract:
PURPOSE: A carbon dioxide absorbing agent is provided to improve the absorbing speed of carbon dioxide by applying a chemical absorbing process, which was used at a low pressure, at a high pressure. CONSTITUTION: A carbon dioxide absorbing agent is composed of methyldiethanolamine, cyclic amine, and water. A performance improving promoter is 7.5 weight% of the cyclic amine. 30 weight% of methyldiethanolamine is contained in the carbon dioxide absorbing agent. The cyclic amine is selected from a group including 2-methylpiperazine, trans piperazine, 2,5-dimethyl piperazine, 2-methyl piperazine, N-ethylpiperazine, pipecolinic acid, isonipecotic acid, methyl isonipecotate, N-alkyl-3-pipecoline, and the mixture of the same.
Abstract:
A method for manufacturing multicomponent perovskite nano-powder using hydrothermal synthesis is provided to single phase multicomponent perovskite nano-powder without the use of hydrocarbon-containing materials or metallic mineralizers(KOH, NaOH, etc.). A method for manufacturing multicomponent perovskite nano-powder using hydrothermal synthesis comprises the following steps of: weighing titanium-containing hydroxide and barium-containing hydroxide such that the ratio of Ba/Ti is 1.01~1.02; mixing the titanium-containing hydroxide and barium-containing hydroxide to prepare slurry; hypothermally treating the slurry with hot water to prepare first barium titanate powder; washing the first barium titanate powder; and sintering the washed first barium titanate powder to obtain perovskite nano-powder. The nano-powder has a tetragonal structure.
Abstract:
A multistage type apparatus for measuring concentration in the gas-liquid absorption is provided to be manipulated conveniently, and to measure the concentration exactly in various conditions. A multistage type apparatus for measuring concentration in the gas-liquid absorption comprises a gas injection facility including gas bombe(1a,1b) supplying the measurement target gas; a gas preservation facility including a gas cylinder(5) for maintaining the temperature of the measurement target gas from gas bombe before measurement to the constant temperature; a gas component concentration measurement facility in liquid including the gas-liquid reactor(9) for measuring the gas component concentration in liquid at the gas-liquid equilibrium state; diaphragm pump(13) and the gas cylinder for removing air in the gas-liquid reactor before injecting the measurement target gas and liquid; and an auxiliary facility including a vacuum pump(3) for maintaining the pressure within the gas-liquid reactor to vacuum condition.
Abstract:
본 발명은 티탄산 바륨 분말의 제조 방법에 관한 것이다. 본 발명 방법에 의한 티탄산 바륨 분말은, Ba/Ti 비가 0.99∼1.01이며 케이 팩터가 4∼7로서, 광화제의 첨가나 추가적인 몰비의 조절 공정 없이 원료 물질인 티타늄 함유 수산화물과 바륨 수산화물을 각각 정량하여 고농도로서 열수 반응, 수세 건조 및 하소을 통하여 Ba/Ti 몰비가 0.99∼1.01 수준인 BaTiO 3 를 제조하며, Ba과 Ti을 1:1로 반응시킴에 본 발명의 기술적 특징이 있다. 본 발명의 티탄산 분말의 제조 방법은 BaCO 3 나 BaTi 2 O 5 등과 같은 이차상의 생성 없이 BaTiO 3 분말을 제조할 수 있고, 고농도로 반응을 진행시킬 수 있어 생산성이 향상되며, 이를 통하여 만들어진 티탄산 바륨 분말은 고순도의 단상 BaTiO 3 로서 비정상적인 입성장이 없어 엠엘씨씨 박막용 유전 물질로 적합하다. 티탄산 바륨, 바륨 수산화물, 티타늄 함유 수산화물, 강열 감량, 유전체 세라믹스
Abstract:
PURPOSE: A preparation method of barium titanate powder by hydrothermal synthesis is provided, which prevents corrosion of powder preparation equipment and lowers production cost by using Ba and Ti hydroxides as raw materials instead of conventional raw materials containing chlorides. CONSTITUTION: The continuous preparation method of fine and homogeneous BaTiO3 powder through hydrothermal process comprises the steps of: (i) mixing barium hydroxide, Ba(OH)2-8H2O, with titanium hydroxide, TiO(OH)2 in a concentration ratio of 0.5-2 : 1 under pressure of 10-40MPa, which is expressed by the formula TiO(OH)2 + Ba(OH)2-8H2O -->BaTiO3 +10H2O; (ii) supplying hot water to the mixture for 100-400deg.C of mixture; (iii) reacting 3-10sec. to form critical nuclei; (iv) supplying hot water to the intermediates forming critical nuclei, and dehydrating under subcritical and supercritical state to get BaTiO3; (v) separating synthesized materials and recycling.
Abstract:
본원은 에테르로 관능화된 이미다졸륨 기반 이온성 액체 및 이를 이용한 이산화탄소 분리 방법에 관하여 개시한다. 본원의 에테르로 관능화된 이미다졸륨계 이온성 액체는 우수한 이산화탄소 흡수능을 가지며, 흡수된 이산화탄소는 가열 등을 통해 손쉽게 탈착이 가능하여, 사용의 편리성은 물론, 선택성, 열적 안정성 및 반복적 사용 및 오랜 사용수명으로 인해 CO 2 포집에 유용하게 사용될 수 있다.
Abstract:
본원은 고체 아민을 함침한 성형 제올라이트 및 그 제조방법에 관한 것이다. 본원의 방법으로 제조된 제올라이트는 고체 아민이 함침되지 않은 제올라이트 및 MEA가 함친된 제올라이트와 비교하여 월등한 이산화탄소 수착능을 갖는다. 또한 연소 배기 가스가 대기 중으로 배출되는 온도에서도 기존의 것과 비교하여 높은 흡착능을 가져, 이산화탄소 포집에 효과적으로 사용될 수 있다.
Abstract:
PURPOSE: A carbon dioxide absorbent with superior anticorrosion and a manufacturing method of the same are provided to minimize the corrosion of an apparatus for a carbon dioxide absorption process. CONSTITUTION: A carbon dioxide absorbent comprises 16 wt% or less of alkali carbonate, 10 wt% or less of a sterically hindered cyclic amine, and an anticorrosive agent. The anticorrosive agent is at least one selected from a group of ATP(2-aminothiophenol), potassium vanadium acid salt, sodium molybdate, sodium nitrite, sodium tungstate, sodium chromate, sodium benzoate, sodium metasilicate, trisodium phosphate, disodium phosphate, sodium borate, (C6H11)2NH_2NO_2, hexamethylene tetramine, diisopropylamine nitrate, and cyclohexylamine carbonate. The alkali carbonate is at least one selected from a group including potassium carbonate(K_2CO_3), sodium carbonate(Na_2CO_3), sodium hydroxide(NaOH), potassium hydroxide(KOH), potassium bicarbonate(KHCO_3), and sodium bicarbonate(NaHCO_3).
Abstract translation:目的:提供具有优异防腐蚀性的二氧化碳吸收剂及其制造方法,以使二氧化碳吸收过程的装置的腐蚀最小化。 构成:二氧化碳吸收剂包含16重量%或更少的碱金属碳酸盐,10重量%或更少的空间位阻环胺和防腐剂。 抗腐蚀剂是选自ATP(2-氨基苯硫酚),钒酸钾钾,钼酸钠,亚硝酸钠,钨酸钠,铬酸钠,苯甲酸钠,偏硅酸钠,磷酸三钠,磷酸二钠,硼酸钠中的至少一种 ,(C 6 H 11)2 NH 2 NO 2,六亚甲基四胺,硝酸二异丙胺和碳酸环己胺。 碱金属碳酸盐是选自碳酸钾(K 2 CO 3),碳酸钠(Na 2 CO 3),氢氧化钠(NaOH),氢氧化钾(KOH),碳酸氢钾(KHCO 3)和碳酸氢钠(NaHCO 3)的组中的至少一种。
Abstract:
PURPOSE: A continuous carbon dioxide collecting method for minimizing regeneration energy is provided to supply a carbon dioxide absorbent with a composition which minimizes salt generation. CONSTITUTION: A method for removing carbon dioxide includes: a step for bringing gas containing carbon dioxide into contact with a carbon dioxide absorbent in which a sterically hindered cyclic amine is added into alkali carbonate(S110); a step for absorbing carbon dioxide from the gas(S120); a step for separating salts from the absorbent(S130); and a step for regenerating the absorbent(S140). The salt separating process uses a decanter. The absorbent includes 20 wt% or less of the alkali carbonate and 10 wt% or less of the sterically hindered cyclic amine. The alkali carbonate is at least one selected from a group including potassium carbonate(K_2CO_3), sodium carbonate(Na_2CO_3), sodium hydroxide(NaOH), potassium hydroxide(KOH), potassium bicarbonate(KHCO_3), and sodium bicarbonate(NaHCO_3). [Reference numerals] (S110) Gas contacting step; (S120) Carbon dioxide absorbing step; (S130) Salt separating step; (S140) Absorbent regenerating step