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[디젤엔진부문] 플라즈마/촉매 복합 시스템의 NOx 저감 성능에 관한 연구
이형상(H.S.Lee),남창수(C.S.Nam),전배혁(B.H.Chun),전광민(K.M.Chun),송승진(S.J.Song),류재홍(J.H.Ryu),이대원(D.W.Lee),이관영(K.Y.Lee) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1999 No.11_1
NOx conversion to N₂ was investigated by the plasma/catalyst system. Plasma could enhance the performance of catalyst and the plasma/catalyst system showed higher NOx conversion and wider temperature range than those of catalyst alone. Among the catalysts which were tested with plasma, catalyst C showed the highest NOx conversion at the wide range of temperature [NOx conversion: 92%, NOx conversion to N₂: 68%, NO 1775 ppm, N0₂ 145 ppm, 0₂ 5%, He balance, reaction temperature: 400℃, flow rate: 1 L/min]. And its performance significantly depended on the amount of HC.
과산화수소 보존표백시 Silicate 대체 약품에 관한 연구
이상헌,정성욱,김성권,류재홍,Michalowski, R J 한국공업화학회 1997 응용화학 Vol.1 No.2
This study was carried out to investigate the effect of the Versenate PS as the peroxide bleach stabilizer in peroxide bleaching system. Currently, but, most peroxide bleach systems contain peroxide, caustic to activate the peroxide, and the use of a stabilizer such as sodium silicate to stabilize the peroxide during the actual bleaching. Therefore, to evaluate he degree to replace sodium silicate, the experiments of metal signature analysis, metal control by chelant(DTPA), caustic level optimization, and the addition of Versenate PS peroxide stabilizer were performed. The results shows that the only combination of Versenate PS and low sodium silicate provide the most effective peroxide bleaching.