http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
조원일(Wonihl Cho),이승호(Seung-Ho Lee),백영순(Young Soon Baek) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
Recently the direct conversion of methane, which is main component of natural gas, using various plasma technologies has widely been studied in order to obtain synthesis gas or hydrogen-rich gas without CO₂ emission. In the recent efforts for thermal plasma decomposition of organic composites, much attention has been directed toward simultaneous production of hydrogen and solid-phase carbonaceous materials from natural gas. Thermal plasmas have been suggested as optimal heat and radical sources for the thermal decomposition of methane due to their high temperature property and flexibility in their generation. This report was found that hydrogen and carbon black were produced at the mole ratio of 2:1, and carbon black of around 30 ㎚ was produced, which is comparable to classical furnace black. In a study of catalyst effect, Pt-loaded catalysis showed higher activities than a non catalystic reaction for the conversion of methane by plasma catalytic process. The productivity of carbon black was improved by hybrid thermal plasma catalytic reaction up to 3 wt%.
마이크로웨이브 플라즈마에 의한 메탄의 C2+ 계 탄화수소로의 전환반응에 관한 연구
조원일,백영순,방효선,김영채,문세기 ( Wonihl Cho,Youngsoon Baek,Hyosun Pang,Young Chai Kim,Sei ki Moon ) 한국공업화학회 1998 공업화학 Vol.9 No.1
천연가스의 주성분인 메탄의 마이크로웨이브 플라즈마 촉매반응에 의한 C2+ 탄화수소로의 전환반응을 고찰하였다. 플라즈마 출력의 증가(40∼120 watt)와 유량이 감소(40∼5mL/min)함에 따라서 메탄의 C2+ 생성물로의 전환율이 29.2%에서 42.2%로 향상되었으며, 촉매를 플라즈마와 함께 사용하여 에틸렌과 아세틸렌의 선택도를 향상시키는 동시에 높은 전환율을 유지할 수 있다. 실험에 사용한 여러 촉매중에는 Fe계의 촉매가 가장 높은 에틸렌의 선택도(30%)를 나타내었다. 실제 천연가스의 전환실험에서는 C2+ 생성물의 수율이 33.3%에서 46%의 범위를 보였다 순수한 메탄이 원료였을 때 보다 높은 C2+ 수율이 얻어진 것은 천연가스가 메탄 보다 반응성이 높은 성분인 에탄과 프로판등을 함유하고 있기 때문으로 생각된다. Methane, the major constituent of natural gas, had been converted to higher hydrocarbons by a microwave plasma. The yield of C2+ product could be increased from 29.2% to 42.2% with increasing plasma power(40∼120 watt) and decreasing flow rate(40∼5mL/min) of methane. With catalysts, the selectivities of ethylene and acetylene increased while the yield of C2+ remaining constant. Among various catalysts, Fe catalyst showed the highest ethylene selectivity of 30%. A natural gas could produce more C2+ than a pure methane. This is due to high reactivity of ethane and propane in the natural gas.