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HWAHAK KONGHAK,
Vol.31, No.5, 569-576, 1993
Vol.31, No.5, 569-576, 1993
Ni/SiO2 촉매에 의한 메탄올 분해반응속도
Kinetics of Methanol Decomposition over Ni/SiO2
Ni/SiO2 촉매를 사용하여 온도 473-553K, 메탄올 분압 0.141기압 이하의 범위에서 관형 흐름반응기를 사용하여 메탄올 분해반응을 수행하였다. 주 생성물은 H2와 CO이었으며, 부산물로 소량의 CH4가 생성되었다. CH4 생성량은 온도가 높아짐에 따라 점차 증가하였으나 CO의 선택도가 95% 이상을 나타내었다. 다음과 같은 분해반응속도식을 제안하고 실험 자료로부터 반응속도론적 매개변수값을 결정하였다.
-rA= ks KA PA / (1+KAPA)2
Decomposition of methanol over a Ni/SO2 catalyst was carried out using a tubular flow reactor in a temperature range between 473 and 533K. The partial pressure of methanol was below 0.141 atm. H2 and CO were the major decomposition products, and a small amount of CH4 was produced. Although the amount of CH4 formed increased with temperature, the selectivity to CO was greater than 95%. The following rate equation was proposed and the kinetic parameter values were eveluated.
-rA=ksKAPA/(1+KAPA)2
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