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복합담체의 전이금속촉매를 이용한 VOC(벤젠)의 산화특성 연구
박영성(Yeong-Seong Park),정인석(In-Seok Jeong),송두진(Doo-Jin Song),공병선(Byung-Sun Kong) 대전대학교 환경문제연구소 2010 환경문제연구소 논문집 Vol.14 No.-
Oxidation characteristics of benzene as a VOC were investigated using a fixed bed reactor system over transition metal catalysts. The transition metal catalysts were made by using transition metal nitrate reagent and various support materials such as γ-Al₂O₃, and TiO₂. The parametric tests were conducted at the reaction temperature range of 200~500℃, benzene concentration of 2,000~3,000 ppm with space velocity of 10000 hr<sup>-1</sup>. The property analyses such as BET, SEM, TGA and the conversions of catalytic oxidation of VOC were examined. The experimental results showed that the BET surface areas of catalyst are 86.4∼167.7㎡/g, the pore volumes are 0.049∼0.056㎤/g, and the average pore sizes of catalyst are 27∼44Å which mean the meso pore. It was also found that the conversion of benzene oxidation reaction at 400∼500℃ with Cu/γ-Al₂O₃+TiO₂ catalyst showed 90∼100%, which indicate that the transition metal catalyst with composite supports is very effective for the oxidation of benzene.
이명천,김인범,이의수,배두한,윤효창,공병선 한국공업화학회 2000 응용화학 Vol.4 No.1
As EMC of semi-conductor encapsulants contains high concentrations of filler, its flow behaviors are greatly affected by the concentrations and properties of those fillers during the chip-encapsulation process. This paper reports the effects of a fillers by compared with the computer simulation and short shot experimental results conducted at various process conditions. The simulation results was in good agreement with short shot results with respect to the fill time, but melt-front was not matched thoroughly.