원자력 고온 핵 열을 이용한 열화학적 수소제조 IS(요오드-황) 프로세스에서의 분리막 기술의 이용

황갑진,박주식,이상호,김태환,최호상 한국막학회 2004 멤브레인 Vol.14 No.3

원자력 발전의 고온 가스로(high temperature gas-cooled reactor, HTGR)의 냉각제로 사용되는 He가스의 열에너지를 이용하여 물을 분해해서 수소를 생산하는 "열화학적 수소제조 IS프로세스"에 대해 설명하였다. 특히, 분리막 기술의 이용에 관한 연구를 중점으로 정리하였다. 고온 원자력 열에너지를 이용한 열화학적 수소 제조법은 실현 가능한 단계까지 왔다고 생각되며, 아직 연구 개발 과제가 많이 남아 있지만, 미래의 청정에너지 중의 하나인 수소를 대량 생산할 수 있는 가능성을 갖고 있다. It summarized about the properties of thermochemical water-splitting iodine-sulfur process that was hydrogen production using the waste heat from the High Temperature Gas-Cooled Reactor (HTGR) recycling the heat of nuclear power. It was mainly explained about the application of membrane separation technique in IS process. Thermochemical water-splitting hydrogen production method using the high temperature nuclear thermal energy could be realized and remained to be solved the investigation subject. And, it is possible for mass-production of hydrogen such as one of the clean energy in future.

Cu-ferrite를 이용한 물 분해 수소제조

황갑진,서인태,박주식,김정민,이상호,김영호 한국공업화학회 2004 한국공업화학회 연구논문 초록집 Vol.2004 No.-

La_0.6Sr_0.4CoO_3-δ 로 코팅된 La_0.7Sr_0.3Ga_0.6Fe_0.4O_3-δ 분리막의 산소투과성과메탄 부분산화에 관한 특성

황갑진,박주식,이상호,김정민,김영호 한국공업화학회 2004 한국공업화학회 연구논문 초록집 Vol.2004 No.-

Preparation of the electrode using NiFe2O4 powder for the alkaline water electrolysis

황갑진,길보민,유철휘 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.48 No.-

The coin electrode was prepared by mixing the binder (polyethylene glycol or styrene butadiene rubber)and NiFe2O4 powder which was synthesized by a co-precipitate method, to use in the alkaline waterelectrolysis. The over-potential of the prepared coin electrode was measured in 7 mol L 1 KOH solutionfor an oxygen evolution reaction (OER) and a hydrogen evolution reaction (HER). From the data, it wasestimated that the prepared coin electrode is useful for the electrode in the alkaline water electrolysiswith its low over-potential (1.57 V and 2.20 V for OER and HER, respectively, at the current density of0.41 A cm 2).

Application of the commercial ion exchange membranes in the all-vanadium redox flow battery

황갑진,김상원,인대민,이대엽,유철휘 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.60 No.-

Three commercial anion exchange membranes and two commercial cation exchange membranes were tested to use as a separator in the all-vanadium redox flow battery (VRFB). Membrane properties such as an ionic conductivity and a permeability of each vanadium ion were evaluated. Ionic conductivities decreased in the order: Nafion117 ≈ APS > NEPEM115 > FAP-PP-475 > FAP-PE-420. An anion exchange membrane had a low permeability of each vanadium ion compared to a cation exchange membrane. Energy efficiencies of VRFB using the commercial ion exchanges membrane had almost the same value in the range of 76.0–78.7%.

Stability of a Silica Membrane in the HI-$H_2O$ Gaseous Mixture

황갑진,박주식,이상호,최호상,HWANG Gab-Jin,PARK Chu-Sik,LEE Sang-Ho,Choi Ho-Sang The Membrane Society of Korea 2004 멤브레인 Vol.14 No.3

The stability of the prepared silica membrane by chemical vapor deposition (CVD) method in the HI-$H_2O$ gaseous mixture was evaluated aiming at the application for hydrogen iodide decomposition in the thermochemical IS process. Porous $\alpha$-alumina having pore size of 100 nm was modified by the different CVD temperature using tetraethoxysilane as the Si source. The CVD temperature was $700^{\circ}C$, $650^{\circ}C$, and $600^{\circ}C$. The $H_2$/H$_2$ selectivities of the modified membranes which were measured by single-component permeation experiment showed 43.2, 12.6, and 8.7 at $600^{\circ}C$ for the M1 (CVD temperature was $700^{\circ}C$), M2 (CVD temperature was $650^{\circ}C$) and M3 membranes (CVD temperature was $600^{\circ}C$), respectively. Stability experiment in the HI-$H_2O$ gaseous mixture was carried out at $450^{\circ}C$. The prepared silica membrane at $600^{\circ}C$ of CVD temperature was more stable than that at the other CVD temperature. 열화학적 IS 공정에서 요오드화수소의 분해에 적용하기 위하여 화학증착법(CVD)으로 제조된 silica 막의 안정성을 HI-$H_2O$ 기상 혼합물에서 평가하였다. Si 원천으로 tetraethoxysilane을 사용하여 서로 다른 CVD 온도로 기공크기가 100 nm인 $\alpha$-alumina를 처리하였다. CVD온도는 $700^{\circ}C$, $650^{\circ}C$, $600^{\circ}C$이었다. $600^{\circ}C$에서 수행한 단일 성분의 투과 실험에서 측정한 막의 $H_2$/$N_2$ 선택도는 CVD 온도 $700^{\circ}C$의 M1 막은 43.2, $650^{\circ}C$의 M2 막은 12.6, $600^{\circ}C$의 M3 막은 8.7을 나타내었다. HI-$H_2O$ 기상 혼합물에서 안정성 실험은 $450^{\circ}C$에서 수행하였는데, CVD 온도 $650^{\circ}C$에서 처리된 막이 다른 온도에서 처리된 막보다 더 안정성이 더 좋은 결과를 얻었다.

비판적 사고와 사회과 탐구방법

황갑진 한국사회교과교육학회 2009 사회과교육연구 Vol.16 No.4

The purpose of this paper is to analyze the programs?contents in the research of critical thinking education for improving the methods in social studies inquiry. The data for this research are collected and compiled from the published research papers concerning the critical thinking and the social studies inquiry in the field of social studies education in South Korea. Most pieces of the critical thinking research are found to have been done not for the high school students but for the primary/middle school students. Only a few factors of critical thinking have been used in the education programs for the students in primary schools, where the teaching methods are usually the forms of explaining the issues, solving the problems, and playing the games. But many factors of critical thinking have been used in the education programs for the students in middle schools, where small groups are often organized in the class for the controversial debate. Critical thinking can occur whenever one judges, decides, or solves a problem; in general, whenever one must figure out what to believe or what to do in a reasonable and reflective way. Because critical thinking employs not only logic but broad intellectual criteria such as clarity, credibility, accuracy, precision, relevance, significance and fairness, the critical thinking methods are found to be most widely used in the field of social studies education. In this research, it is suggested that the ability to think critically can be improved with the controversial debate in the class and that social science research methods can be well applied in the social inquiry methods of social studies education. 본 연구는 사회과 탐구방법의 개선을 위해 비판적 사고의 구성요소와 사회과학방법들과의 관계를 중심으로 사회과 비판적 사고 교육연구들을 내용 분석하였다. 본 연구에 사용된 연구방법은 내용분석이며, 내용분석 자료들은 도서관 논문검색기와 RISS의 검색기를 통해 수집된 인문사회계 비판적 사고 교육 관련 20편의 논문들 중 사회과의 프로그램개발 연구와 실험설계의 연구들이다. 기존 연구들의 분석 결과를 보면, 사회과 교육 관련 비판적 사고 교육은 초등학교에서 많이 이루어졌고 프로그램 개발도 많았으며, 다음으로 중학교에서 많이 이루어졌다. 비판적 사고 구성요소의 적용을 보면, 초등학교에서 저학년은 비판적 사고 구성요소의 일부를 사용하여 단순한 개념학습을 하거나, 철학놀이게임이나 문답식 수업을 행하였다. 그리고 비판적 사고 구성요소들을 사용한 소 모둠의 논쟁수업은 초등학교 6학년과 중학교에서 행해졌다. 이는 학생의 인지발달과 학생의 지적 수준에 따라 비판적 사고요소의 적용과 수업방식이 달라져야함을 의미한다. 비판적 사고연구는 사회와 도덕과목에서 많이 행하여졌다. 이는 사회와 도덕이 사실과 가치를 교육대상으로 함은 물론 사회현상에 대한 철학이나 과학적 연구방법을 강조하기 때문으로 판단된다. 그리고 비판적 사고의 구성요소와 사회과학방법들과의 관련성과 비판적 사고 교육프로그램의 내용분석에 의하면, 사회과학방법들에 기초한 논쟁수업 형태의 사회과 탐구방법에 의한 교육은 비판적 사고력을 높일 수 있다. 그리고 비판적 사고력 향상을 위한 사회과 가치탐구방법은 현상학적 접근과 비판이론적 접근의 영역으로 구분하되, 비판이론에 입각한 사회과 탐구방법의 개발이 요구된다.

Preparation of anion exchange membrane using polyvinyl chloride (PVC) for alkaline water electrolysis

황갑진,Soo-Gon Lim,Soo-Yeon Bong,유철휘,최호상 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.9

An anion exchange membrane was prepared by the chloromethylation and the amination of polyvinyl chloride (PVC), as the base polymer. The membrane properties of the prepared anion exchange membrane, including ionic conductivity, ion exchange capacity, and water content were measured. The ionic conductivity of the prepared anion exchange membrane was in the range of 0.098×10−2-7.0×10−2 S cm−1. The ranges of ion exchange capacity and water content were 1.9-3.7meq./g-dry-membrane and 35.1-63.1%, respectively. The chemical stability of the prepared anion exchange membrane was tested by soaking in 30 wt% KOH solution to determine its availability as a separator in the alkaline water electrolysis. The ionic conductivity during the chemical stability test largely did not change.

수성가스 전환반응을 위한 촉매 제조

황갑진 한국환경에너지공학회 2022 한국열환경공학회 학술대회지 Vol.2022 No.2

액상 슬러리 반응기에서 합성가스로부터 DME 직접 제조

황갑진,박주식,김영호,김정민,이상호,김종원 한국수소및신에너지학회 2004 한국수소 및 신에너지학회논문집 Vol.15 No.2

DME(Dimethyl Ether) was directly produced from the synthesis gas using the slurry phase reactor. The catalyst for DME production prepared two types (A type; Cu:Zn:Al=57:33:10, B type; Cu:Zn:Al=40:45:15, molar ratio). It was evaluated for the effect of the reaction medium oil using the small size slurry phase reactor. DME production yield and the methanol selectivity decreased in the order: n-hexadecane oil> mineral oil> therminol oil. The long-term test of DME production was carried out using A and B type catalyst, and n-hexadecane oil and mineral oil, respectively. It was confirmed that the use of A type for the catalyst and n-hexadecane for the reaction medium oil was very useful for the viewpoint of the DME production form the synthesis gas.