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물 분해와 CO<sub>2</sub> 환원을 위한 고활성 촉매기술
정평진,Chung, Pyung Jin 한국에너지학회 2017 에너지공학 Vol.26 No.3
Currently, exhaust gas emitted from thermal power plants and various combustion facilities that consume large amounts of fossil fuels such as coal, oil, and natural gas contains high concentrations of $CO_2$ and is a major cause of global warming. Conventionally, as a countermeasure against this problem, research and development are being carried out from various fields, and it is considered to be one of the most promising methods for separating and recovering $CO_2$ in the exhaust gas. One of the reasons for the low use of carbon dioxide is oxidized among the carbon compounds and is present in the most stable state. From the viewpoint of $CO_2$ emissions, $CO_2$ immobilization technology, which converts $CO_2$ into chemically useful compounds, is considered to be more important. 현재, 석탄이나 석유, 천연가스 등의 화석연료를 대량으로 소비하는 화력발전소나 각종 연료시설로부터 배출되는 배기가스에는 고농도의 $CO_2$가 포함되어 있으며, 지구온난화의 주된 원인으로 되어 있다. 종래, 이 대책법으로서 다방면으로부터 연구개발이 수행되고 있으며, 배기가스 중의 $CO_2$를 분리 회수하여 처분하는 것도 매우 유망한 방법의 하나라고 생각되고 있다. 이산화탄소의 화학적 이용이 적은 이유의 하나는, 이산화탄소가 탄소화합물 중에서도 산화되어 가장 안정한 상태로 존재하기 때문이다. $CO_2$ 배출의 관점에서 앞으로 $CO_2$를 화학적으로 유용한 화합물로 변환시키는 $CO_2$ 고정화 기술이 더욱 중요하다고 생각된다.
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S_N1 치환 반응에 의한 N-불포화 알킬카르바졸 유도체의 합성에 관한 연구
정평진,조을훈 단국대학교 1998 論文集 Vol.32 No.-
N-unsaturated alkylcarbazole derivatives were synthesized by the unimolecular nucleophilic substitution(S_Nl) of a carbazole with an unsaturated alkyl chloride. The reaction between the carbazole and unsaturated alkyl chloride was conducted in dimethyl sulfoxide (DMSO) containing an alkali (NaOH or KOH) for 4hrs under nitrogen atmosphere at room temperature. At this time the mole ratios between the carbazole alkali and unsaturated alkyl chloride were found to be 1 : 6 : 1, 1 : 3 : 1 and 1 : 1 : 1, respectively. All the compounds including starting materials and reaction products were characterized by CHN analysis ^1H-NMR and FT - IR spectroscopy.
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정평진,박노훈 단국대학교 1998 論文集 Vol.33 No.-
The Nalkylcarbazole polymers were synthesized by cationic polymerization. These polymerizations were reacted under different condition for 3hrs or 24 hrs. These reactions between Nunsaturatedalkylcarbazole monomers and boron trifluoride diethyl etherate(BF_3ㆍEt_2O) were conducted in toluene at ice water bath under N_2 atmosphere or in benzene at room temperature under vacuum atmosphere. At htis time the starting materials were monomer 1.0g and initiator 1.42㎎, respectively. All of these compounds of substrates and products were characterized by melting point. FTIR and ^1HNMR spectroscopy.
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정평진,조민주 단국대학교 신소재기술연구소 2002 신소재 Vol.11 No.-
본 논문은 유기EL의 기초에 관한 연구로서 적색 유기형광물질을 합성한 후, 얻어진 물질의 특성을 연구검토한 것이다. 이들의 적색유기형광물질은 p-디메틸아미노벤즈알데히드와 각종 에스테르류(메틸 4-아미노벤조산에스테르, 에틸 4-아미노벤조산에스테르, 프로필 4-아미노벤조산에스테르, 이소프로필 4-아미노벤조산에스테르, 부틸 4-아미노벤조산에스테르, 이소부틸 4-아미노벤조산에스테르)와의 축합반응에 의하여 각각 합성하였다. 또한 이들은 FT-IR, 1H-NMR 등에 의하여 구조를 확인하였으며, PL측정에 의하여 발광스펙트럼 특성을 확인하였다. This study was based on organic electroluminescence(EL), red emitting materials according to reaction was synthesized and characterized. Individual red emitting materials were synthesized from the condensation of p-dimethylaminobenzaldehyde with esters(methyl 4-aminobenzoate, ethyl 4-aminobenzoate, propyl 4-aminobenzoate, isopropyl 4-aminobenzoate, butyl 4-aminobenzoate and isobuty 4-aminobenzoate), respectively. The structure of obtained materials were elucidated by FT-IR, ^1H-NMR and the emission spectra confirmed by photoluminescence(PL) measurement.
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${\pi}$-알릴리간드를 갖는 산소가교 팔라듐착화합물의 반응성에 관한 연구
정평진,Pyeong Jin Chung 대한화학회 1986 대한화학회지 Vol.30 No.6
본 연구는 ${\pi}$-알릴리간드를 갖는 산소가교 팔라듐착화합물의 반응성에 관한 것이다. 이 경우에 합성한 산소가교화합물은 산소원으로서 초과산화이온$(O_2^-$)을 사용했다. 합성한 산소가교 팔라듐착화합물의 형태를 검토하기 위하여 벤젠 용매중에서 물, 메탄올 및 아세트산과의 반응을 행하였다. 그 결과 산소가교 팔라듐착화합물은 이들과 반응하여 각각 과산화수소$(H_2O_2)$를 발생하면서 히드록시, 메톡시 및 아세톡시가교 팔라듐착화합물로 변환되었다. 또한 산소가교 팔라듐착화합물은 치환페놀류인 살리실알데히드, 8-히드록시퀴놀린 및 활성메틸렌화합물인 아세틸아세톤, 디메틸말론산과도 반응하여 과산화수소와 단핵팔라듐착화합물을 생성했다. 이것은 착화합물중의 배위산소가 과산화이온$(O_2^{2-})$이며, 강한 염기로서 작용하고 있음을 시사한다. This study is related to reactivity of dioxygen bridged palladium complexes having ${\pi}$-allyl ligands. In this case, new dioxygen bridged palladium complexes were prepared using superoxide ion$(O_2^-)$ as an oxygen source. Reactions of the dioxygen palladium complexes prepared in the study were examined in order to clarify the nature of the coordinated dioxygen. Treatments of a solution of the dioxygen bridged palladium complexes in benzene by water, methanol and acetic acid gave hydrogen peroxide $(H_2O_2)$ as hydroxy-, methoxy-, and acetoxybridged palladium complexes, respectively. The dioxygen bridged palladium complexes reacted also with substitution phenols of salicylaldehyde, 8-hydroxyquinoline and active methylenes of acetylacetone, dimethyl malonate to afford mononuclear complexes of palladium and hydrogen peroxide. The results suggest that dioxygen is coordinated as peroxo $(O_2^{2-})$ in the complexes and behaves as a strong base.
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정평진,임회득,Chung, Pyung-Jin,Lim, Hoi-Deuk 한국재료학회 2003 한국재료학회지 Vol.13 No.8
As a fundamental study on organic electroluminescence(EL), blue emitting materials were synthesized and characterized. Individual blue colored hydrazone derivatives were synthesized from the reaction of aldehydes (phthalaldehyde, isophthalaldehyde) with the corresponding amnios (1-methyl -1-phenylhydrazine, 1,1-diphenylhydrazine hydrochloride). Recrystallization of hydrazones from chloroform revealed the melting temperature within $142∼156^{\circ}C$. Photoluminescence(PL) analysis on each hydrazone showed that emission range were blue(458∼478 nm). The structure of obtained hydrazones were elucidated by FT-IR, $^1$H-NMR and C, H, N elemental analyzer.
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정평진,조민주,Chung, Pyung-Jin,Cho, Min-Ju 한국재료학회 2005 한국재료학회지 Vol.15 No.7
This study was based on organic electroluminescence display. Especially, TPD and $\alpha-NPD$ for the hole transport materials were synthesized by Ullmann reaction. This reaction was conducted between 3methylphenylamine, 1-naphthylamine and 4,4'-diiodobiphenyl in toluene containing CuCl catalyst and KOH base. The structural property of reaction products were analyzed by FT-IR, $^1H-NMR$ spectroscopy, and thermal stability, reactivity and PL property were analyzed by melting point, yield and emission spectrum, respectively. The photoluminescence spectra of a pure TPD and $\alpha-NPD$ were observed at approximately 416nm and 438nm respectively. In this study, it was known that the melting point, yield, PL properties of TPD and $\alpha-NPD$ were changed by substituent group of amines.
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