http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Pd/cordierite 촉매상에서 메탄의 연소 특성 고찰
Cho, Won-Ihl,Oh, Young-Sam,Park, Dal-Ryung,Baek, Young-Soon,Pang, Hyo-Sun,Mok, Young-Il 한국에너지학회 1997 에너지공학 Vol.6 No.1
자동차 촉매인 Pd/cordierite 촉매상에서 메탄의 연소시험을 통하여 천연가스 이용기술 활용가능성에 대해서 고찰하였다. 중고온 연소에서 알맞은 비표면적 18.7$m^2$/g 을 갖으며 안정한 구조를 확인하였다. 메탄 연소 반응시 활성화에너지는 19.2 kcal/mol로써 비교적 우수한 활성을 보여주었으며, 메탄 연소 반응의 승온과 온도를 내리면서 촉매의 비활성 특성을 보여주는 활성 히스테리시스 현상을 관찰하였다. Pd/cordierite 촉매상에서 반응온도 $700^{\circ}C$이하에서 공간속도와 공연비를 변화시키면서 메탄 연소특성을 수행하였다. This study aims to investigate the application possibility on natural gas in relation to the catalytic combustion of methane on Pd/cordierite catalyst which is currently used as an automobile converter catalyst. The surface area of the catalyst tested was determined to be about 18.7㎡/g and to keep stable condition in structure at mid-high temperatures. The activation energy for methane combustion reaction was estimated to be 19.2 kcal/mol and a hysterisis on the catalyst activity was observed in terms of the catalyst deactivation as the reaction temperature was varied for the methane combustion. On Pd/cordierite catalyst, The characteristics of methane combustion were studied as functions of space velocity and air/fuel ratios below 700$^{\circ}C$.
A DIRECT CATALYTIC CONVERSION OF NATURAL GAS TO C2+ HYDROCARBONS BY MICROWAVE PLASMA
Cho, Won ihl,Baek, Young soon,Pang, Hyo sun,Kim, Young Chai 한국화학공학회 1998 Korean Journal of Chemical Engineering Vol.15 No.5
Methane, the major constituent of natural gas, was converted to higher hydrocarbons by a microwave plasma. The yield of C2+ products increased from 29.2% to 42.2% with increasing plasma power and decreasing flow rate of methane. When catalysts were used in the plasma reactor, the selectivities of ethylene and acetylene increasde, while the yield of C2+ remained constant. Among, various catalysts used, Fe catalyst showed the highest ethylene, selectivity of 30%. And when the actual natural gas was introduced, more C2+ products were obtained (46%). This is due to the ethane and propane in the natural gas. Applying electric field inductance for evolving the high plasma, we obtained high C2+ products of 63.7% when Pd-Ni bimetal catalyst was used.