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Phenyl Acetylene과 Styrene의 共重合
변형직,김재록,이웅무,Hyung Chick Pyun,Jaerok Kim,Woong-Moo Lee 대한화학회 1969 대한화학회지 Vol.13 No.4
Gamma-ray induced copolymerization of phenyl acetylene with styrene is compared with that of the Ziegler catalyzed. The reactivity of styrene is greater than that of phenyl acetylene in the gamma-ray induced polymerization but much less than that of phenyl acetylene in the Ziegler catalyzed. The resulting copolymer is identified by means of DTA and spectrophotometry. Further, the liquid scintillation counting of styrene-${\alpha}-C^{14}$clarified the relative composition of the copolymers.
Voltage - Current Characteristics of Electrical Discharge Method for Hydrogen Generation
최용만(G . J . Kang),강구진(S . Y . Cha),차석렬(W . M . Lee),이웅무 한국수소및신에너지학회 1996 한국수소 및 신에너지학회논문집 Vol.7 No.1
Hydrogen generation by electrical discharge through metal/water system is a viable method for on-demand applications. But its success depends on high energy efficiency defined as the ratio of the amount of consumed metal for a complete reaction with water to the electrical energy input. To improve the energy efficiency the electrical discharge has to sustain the hydrogen generation reaction with a minimal energy dissipation. Some experimental results on the discharge voltage-current profiles are reported and discussed.
Voltage-Current Profiles of Hydrogen-Oxygen Mixture Gas at Polymer Electrolyte Interface
차석렬(Suk Yeul Cha),송정민(Jung Min Song),이웅무(Woong Moo Lee) 한국수소및신에너지학회 1996 한국수소 및 신에너지학회논문집 Vol.7 No.2
Voltage-current profiles are measured when hydrogen-oxygen gas is in contact with solid polymer membrane (Nafion<sup>®</sup>) as the electrolyte. The feed gas is prepared by mixing hydrogen and oxygen gas in various ratios. The carbon gas diffusion electrodes contacting the electrolyte are treated by platinum catalyst. The platinum surface is impregnated with a 5% Nafion<sup>®</sup> solution to ensure its good surface contact with the electrolyte. The constant voltage between anode and cathode was applied by a DC power supply. The results on the profiles show that the energy efficiency critically depends on the hydrogen concentration in H₂/O₂ mixture gas.
Hydrogen Generation by Electrical Discharge across Water - Vapor Interface
강구진(Gou Jin Kang),이수창(Soo Chang Lee),최용만(Yong Man Choi),이웅무(Woong Moo Lee) 한국수소및신에너지학회 1997 한국수소 및 신에너지학회논문집 Vol.8 No.4
Generation of hydrogen and oxygen gas from water is mostly accomplished by electrolysis. In this report, a scheme is presented regarding the gas generation based on plasmolysis. Unlike electrolysis water dissociation by electrical discharge (plasmolysis) requires a high voltage to cause either electron emission or electron capture, and subsequent ionization of involved molecular species. When electrical discharge is initiated between electrodes separated by water-vapor interface, a very large electric field(∼100㎸/㎝) is developed at the tip of the electrode placed in the vapor phase. It is found that the efficiency of plasmolysis depends on the polarity of the electrode placed in the vapor phase. Also presented is the scheme of hydrogen and oxygen generation by such electrical discharge.