http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
최영국,김광제,이수복 ( Young Kook Choi,Kwang Je Kim,Soo Bok Lee ) 한국화학공학회 1989 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.27 No.5
A PVA pervaporation membrane, which has preferential selectivity for water, was introduced. For the separation of ethanol-water mixtures above 90 wt% of ethanol, the membrane exhibited selectivity above 50 and permeability of 0-0.4 ℓ/hr·㎡, The membrane surface area required for the production of 360 ㎏/hr absolute ethanol from 93 wt% ethanol-water mixture by the pervaporation process using the membrane was estimated as 163 ㎡. In this case, the average ethanol concentration was calculated as 13.5 wt%. The energy cost of pervaporation process was compared with that of azeotropic distillation process using benzene as an entrainer. As a result, it is confirmed that the energy cost of pervaporation process is merely 115 of that of azeotropic distillation process.
소원욱,박승빈,김광제,문상진 ( Won Wook So,Seung Bin Park,Kwang Je Kim,Sang Jin Moon ) 한국공업화학회 1997 응용화학 Vol.1 No.1
Nanosize titania colloidal solutions were prepared by the hydrolysis and condensation of titaniumtetraisopropoxide(TTIP) at room temperature. Hydrothermal treatment of this titania sol was carried out in an autoclave. As the H^+/TTIP mole ratio decreased and H₂O/TTIP mole ratio increased, stable sol was formed. The size and crystallinity remained unchanged after hydrothermal treatment of the stable sol at between 160 and 240℃. however, hydrothermal treatment of unstable sol produced rod-like particles and the crystallinity was changed from anatase to rutile.
김미양 ( Mi Yang Kim ),김광제 ( Kwang Je Kim ),강호 ( Ho Kang ) 한국공업화학회 2010 공업화학 Vol.21 No.6
음이온 교환막은 전기투석뿐만 아니라 역전기투석에 의한 전기생산과 축전 탈이온에 의한 정수 분야에 이용될 수 있다. 본 연구에서는 플리비닐알콜 수용액 상에서 (vinylbenzyl)trimethylammonium chloride와 2-hydroxyethyl methacrylate를 중합한 후 글루타르산과의 에스테르화 반응, 그리고 글루타르알데히드와 가교반응을 통해서 음이온 교환막을 제조하였다. 실험 변수에 따라 음이온 교환막을 제조하고 이온교환막의 전기화학적 물성을 조사하였다. 중합반응에서 음이온 교환성 단량체 비율에 따라 이온교환량과 저항 값이 변하였으며, 에스테르화 반응에서는 글루타르산의 함량의 증가에 따라 함수율과 전도도가 감소하였다. 형성된 필름과 알데히드의 가교반응 시간 변화는 함수율, 전기저항, 이동수 값을에 영향을 미쳤다. 끝으로 제조된 이온 교환막의 chronopotentiometry와 한계전류밀도도 측정하였다. Anion exchange membranes can be used for reverse electrodialysis for electric energy generation, and capacitive deionization for water purification, as well as electrodialysis for desalination. In this study, anion exchange membranes of poly((vinylbenzyl)trimethylammonium chloride-2-hydroxyethyl methacrylate)/poly(vinyl alcohol) were prepared through the polymerization of (vinylbenzyl)trimethylammonium chloride and 2-hydroxyethyl methacrylate in aqueous poly(vinyl alcohol) solutions, esterification with glutaric acid, and cross-linking reaction with glutaraldehyde. We investigated electrochemical properties for the anion exchange membranes prepared according to experimental conditions. Ion exchange capacity and electrical resistance for the membranes were changed with a variation in the monomer ratio in polymerization. Water uptake and conductivity for the membranes decreased with an increase in the content of glutaric acid in esterification. The change in the time of cross-linking reaction with the formed film and glutaraldehyde affected electrochemical properties such as water uptake, conductivity, or transport number for the membranes. Chronopotentiometry and limiting current density for the anion exchange membranes prepared were measured.
김수선(Soo Sun Kim),장점석(Jum Suk Jang),소원욱(Won Wook So),김광제(Kwang Je Kim),문상진(Sang Jin Moon) 한국수소및신에너지학회 2000 한국수소 및 신에너지학회논문집 Vol.11 No.4
In the case of photocatalytic hydrogen production from water, the performance-property relationships of CdS-TiO₂ film type composite catalysts were investigated. To control the physical properties of the primary particles, the mixture of CdS and TiO₂ nano-sols prepared by the sol-gel method at room temperature was hydrothermally treated at 240oC for 12hr. The film electrodes were prepared by the casting method. The photocurrents measured by a photoelectrochemical method and the hydrogen production rates measured by a photochemical method were closely dependent on the physical properties such as crystalline form, primary particle size and CdS/TiO2 mole ratio, and these varied in the range of 1.2~2.6 mA/cm2 and 1.0~1.6x10-3mol/hr, respectively.