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Korean Chemical Engineering Research,
Vol.43, No.5, 560-565, 2005
Vol.43, No.5, 560-565, 2005
제올라이트 Beta, USY, Mordenite 촉매를 이용한 Methylnaphthalene의 트랜스메틸화 반응
Transmethylation of Methylnaphthalene Over Beta, USY and Mordenite Zeolite Catalysts
1-methylnaphthalene(1-MN)과 2-methylnaphthalene(2-MN) 사이에서의 트랜스메틸화 반응을 제올라이트, H-mordenite (HM), H-Beta(Hβ), H-USY(HUSY) 촉매를 이용한 고정층 반응기에서 수행하였다. Hβ25(SiO2/Al2O3=25) 촉매는 다음 과 같은 조건, 반응온도 350 oC, 반응압력 1.5Mpa, 전체 액상 반응물의 WHSV 2.7gfeed /gcat · h, 반응물 1-MN과 2-MN 의 몰비 1:1, 반응 1시간에서 2-MN/1-MN 비=2.3와 2,6-DMN/2,7-DMN 비=1.3을 보이면서 다른 촉매보다 높은 전환 율과 안정성을 나타내었다. 촉매의 세공구조, 산성도와 관련하여 촉매성능을 해석하였다.
Catalytic performances of zeolite catalysts such as H-mordenite(HM), H-Beta(Hβ), H-USY(HUSY) for the transmethylation between 1-methylnaphthalene(1-MN) and 2-methylnaphthalene(2-MN) were investigated in a fixed-bed flow reactor. Hβ showed higher and more stable conversion than others to exhibit a high and stable 2-MN/1-MN ratio of 2.3 and 2,6-DMN/2,7-DMN ratio of 1.3 at the 1st hour of time on stream under the reaction conditions as follows: reaction temperature of 350 oC, reaction pressure of 1.5 MPa, WHSV of 2.7 gfeed /gcat·h and the molar ratio of 1-MN and 2-MN of 1:1. The catalytic behavior has been discussed in relation with the catalyst pore structure and acidity.
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