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RISS 인기검색어
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- 저자 : 남정광 ( Jeong Kwang Nam ) (검색결과 3 건)
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남정광 ( Jeong Kwang Nam ),조득희 ( Deug Hee Cho ),서정권 ( Jeong Kwon Suh ),김성보 ( Seong Bo Kim ) 한국화학공학회 2011 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.49 No.5
The synthesis of dimethyl carbonate by liquid phase oxidative carbonylation of methanol was studied under batch reaction system. Reaction factors such as effect on various metals, anion containing in copper catalyst, temperature, carbon monoxide and oxygen molar ratio and copper content were investigated. In particular CuCl2·2H2O showed the excellent of the methanol conversion 65.2%, DMC selectivity 96.6% reaction condition under 1.0 g, 150 °C, MeOH/CO/O2=0.2/0.215/0.05 (molar ratio). CuCl2 led to corrosion of the reactor. Thus, a new catalyst system using supports was investigated to resolve these corrosion problem. Influence on various supports were examined and copper catalyst supported on zeolite Y showed the most excellent activity on the formation of dimethyl carbonate. The amount of Fe dissolved during the reaction using ICP-AES (Inductively Coupled Plasma-Atomic Emission Spectrometer) was compared with catalysts, calcined Cu/zeolite Y showed the lower value below 5% than CuCl2-2H(2)O.
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성형 Co-Ru-Zr-Si 촉매를 이용한 이산화탄소에 의한 메탄 리포밍
남정광 ( Jeong Kwang Nam ),이지혜 ( Ji Hye Lee ),송상훈 ( Sang Hoon Song ),안홍찬 ( Hong Chan Ahn ),장태선 ( Tae Sun Chang ),서정권 ( Jeong Kwon Suh ),김성보 ( Seong Bo Kim ) 한국공업화학회 2012 공업화학 Vol.23 No.2
메탄 개질반응(CH4 reforming)은 온실가스(CH4와 CO2)를 합성가스(CO, H2)로 전환시켜 온실가스를 자원화 한다는 점에서 활발하게 연구가 진행되고 있다. 그러나 촉매 비활성화와 고온 반응으로 인해 아직 상업화된 공정이 없는 상황이다. 본 연구에서는 Co, Ru, Zr 금속과 담지체로 SiO2를 이용해 Co-Ru-Zr-Si (CRZS)촉매를 제조하고 이를 성형하여 메탄 개질반응 특성을 연구하고, 공정 개발을 위한 기초 자료를 얻고자 하였다. 성형촉매의 특성을 알아보기 위해 XRD, BET 그리고 EDS로 분석하였고, 메탄 및 이산화탄소 전환율은 GC (TCD detector)로 분석하였다. 또한 반응속도론적 연구로부터 반응속도상수를 구하였으며 반응물의 물질전달영향을 받지 않는 촉매크기를 선정하였다. 선정된 성형촉매는 850℃, 720 h에서도 활성을 유지하였다. The methane dry reforming has received the considerable attention in recent years, mainly as an attractive route to produce synthesis gas (CO, H2) from green-house gases (CH4, CO2) for resources. However, this process has not been commercialized due to the high temperature and catalyst deactivation. In this study, Co-Ru-Zr catalysts supported on SiO2 were studied for the characterization of methane dry reforming reaction and the preliminary data for process development were achieved. The crystal structure of catalysts was measured by XRD, the surface area and pore size were analyzed by BET, and the element composition of catalyst were analyzed by EDS. Conversions of methane and carbon dioxide were analyzed by GC. In addition, reaction rate constants were obtained from the reaction kinetic study and the optimum catalyst size that does not affect mass transfer from reactants was also determined. The selected pellet-type catalyst maintained activation for 720 h at 850 ℃.
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신평 장림공단 피혁폐기물(皮革廢棄物)을 이용한 활성탄(活性炭) 제조(製造) 및 특성(特性)
박승조,남정광,김정섭,Park, Seung-Cho,Nam, Jeong-Kwang,Kim, Jung-Sup 한국자원리싸이클링학회 2008 資源 리싸이클링 Vol.17 No.1
신평장림 공단에서 배출되는 피혁폐기물은 46.3%의 탄소를 함유하고 있으며 열중량분석에 의하면 $500^{\circ}C$에서 중량손실이 약 50%이었다. $K_2CO_3$을 이용한 화학적 활성화법으로 $800^{\circ}C$에서 약 30분간 질소분위기 중에서 피혁폐기물을 원료로 한 피혁폐기물 활성탄[leather waste chemically activated carbon, LW4AC]을 제조하였다. 피혁폐기물 활성탄의 요오드 값, 메틸렌블루 탈색력은 각각 968 mg/g, 158 mL/g이었다. $K_2CO_3$와 피혁폐기물 혼합비 $[K_2CO_3/LW]$가 증가할수록 세공부피가 발달함을 알 수 있었다. Leather waste discharged from Shinpyung Changrim Industrial Complex contained 46.3 percent of carbon, and weight loss of leather waste about 50 percent was observed at $500^{\circ}C$ by thermogravimetric analysis. Chemically activated carbon [LW4AC] was made at activation temperature of $800^{\circ}C$ during 30 minutes in electric furnace. Iodine value and decoloration of methylene blue was 968 mg/g and 158 mL/g, respectively. We found that pore volume was more developed according to the increase in the ratio of $K_2CO_3/LW$.
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