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탄소의 기체화 반응(I)-수소화 반응에 미치는 표면산소 착물과 알칼리염의 영향
Carbon Gasification Reaction(I) The Effects of Surface Oxides and Alkali Metal Salt on the Hydrogenolysis of Carbon
HWAHAK KONGHAK, April 1984, 22(2), 99-105(7), NONE
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Abstract
탄소 표면산소착물이 탄소의 수소화 반응에 미치는 영향을 연구하였다. 또한 칼리움 염의 작용에 대해서도 연구하였다. 표면산소착물은 CO와 CO2로 분해, 탈착되며, 매우 활성이 큰 표면 탄소를 생성하는 것 같다. Temperature-Programmed 반응을 101 kPa수소하에서 행한 결과 이들 표면탄소는 결정성이 큰 탄소보다 월등히 높은 반응성을 나타내었다. CH4 생성에 대한 활성화 에너지는 75∼85 kJ/mole로서 Ni촉매하에서의 carbidic탄소 수소화 반응에서의 값과 거의 같았다. 칼리움 염은 CH4의 생성을 촉진하는데, 이것은 칼리움 염이 표면산소착물과 작용하여 이들의 탈착을 촉진시키기 때문인 것으로 생각된다.
A detailed study has been conducted on the effects of carbon surface oxides and added potassium salts on the hydrogenolysis of carbon. Carbon surface oxides were decomposed and desorbed in the forms of CO and CO2. The resulting surface carbons were much more reactive than the well crystallized carbons as measured by temperature-programmed reaction in 101 kPa H2. The activation energies for CH4 formation were estimated as 75-85 kJ/mole and they were about the same order of magnitude for Ni catalysed carbidic carbon hydrogenation. Added potassium salt accelerated the formation of CH4 at low temperatures. It seems to be enhanced desorption of carbon surface oxides by the potassium-surface oxide interaction.