HWAHAK KONGHAK, Vol.18, No.1, 11-19, February, 1980
Propane의 탈수소 반응에 관한 연구
A Study on Dehydrogenation of Propane
초록
Propane의 탈수소반응을 540 ∼ 640 ℃ 온도범위내에서 Chromia-alumina촉매를 사용하여 수소첨가없이 반응기의 온도와 단위질량당 반응시간 （W/F）을 주변수로하여 Propylene의 선택도에 관해 최적반응조건을 조사하였다.
여러 가지 반응mechanism step 중 다음의 세 단계가 주종을 이루고 있음을 알았고 analog computer를 사용하여 보다 쉽게 반응속도상수와 활성화 energy를 구하였다.
C3H8 ⇆ C3H6+H2
C3H6 → 3C+H2
C3H8+C3H6 → 2CH4+C2H6+C
여러 가지 반응mechanism step 중 다음의 세 단계가 주종을 이루고 있음을 알았고 analog computer를 사용하여 보다 쉽게 반응속도상수와 활성화 energy를 구하였다.
C3H8 ⇆ C3H6+H2
C3H6 → 3C+H2
C3H8+C3H6 → 2CH4+C2H6+C
The catalytic dehydrogenation of propane was investigated over chromia-alumina catalysts, without the addition of hydrogen, to determine the kinetic model, rate equations, and good operating conditions.
It was found that the results obtained in the temperature range of 540 ∼ 640 ℃ could be explained in terms of the following reaction steps :
C3H8 [<-->] C3H6+H2
C3H6 → 3C+H2
C3H8+C3H6 → 2CH4+C2H6+C
Based on this scheme, the rate constants and activation energies were obtained.
The yield of propylene was highest with W/F of 30 ∼ 35 g-cat/g-propane per hour ; the yield at 600 ℃ was 0.30 with W/F of 35.
It was found that the results obtained in the temperature range of 540 ∼ 640 ℃ could be explained in terms of the following reaction steps :
C3H8 [<-->] C3H6+H2
C3H6 → 3C+H2
C3H8+C3H6 → 2CH4+C2H6+C
Based on this scheme, the rate constants and activation energies were obtained.
The yield of propylene was highest with W/F of 30 ∼ 35 g-cat/g-propane per hour ; the yield at 600 ℃ was 0.30 with W/F of 35.