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혼합산화물 촉매에 의한 무수말레인산의 합성(II)-담지 V-P 산화물 촉매에 의한 1-Butene의 산화반응-

Synthesis of Maleic Anhydride over Mixed Oxide Catalyst(II)-Catalytic Oxidation of 1-Butene over Supported V-P Oxide Catalyst(II)-

김재승 박남국 김영철

Kim JS Park NC Kim YC

HWAHAK KONGHAK, February 1989, 27(1), 42-49(8)
https://doi.org/NONE

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Abstract

촉매 소성온도를 달리한 V-P/TiO₂촉매에서 1-butene 의 기상산화반응에 의한 무수말레인산의 합성반응을 연구하였다. 촉매의 소성온도에 따라 상전이가 일어나는데 금속산화물은 소성온도 400℃에서 amorphous로 부터 crystalline으로, 티타니아는 600℃에서 anatase로 부터 rutile형으로 변하였다. 이 촉매는 520℃에서 소성한 촉매였다.
산화-환원반응기구에 의하여 속도론적 고찰을 하였는데 1-butene의 분압이 낮은 영역에서 1차 속도식으로 해석이 가능하였다.

The vapor phase catalytic oxidation of 1-butene to maleic anhydride was studied over V-P/TiO₂ cata-lysts which different calcination temperatures. The evaluation of phase strongly depended on calcination temperature. The temperature of a structral transforma-tion of metal oxide from amorphous to crystalline was observed at 400℃ and that of titania from anatase to rutile was at 600℃. The structural changes had pronounced effect on the catalytic activity for the oxidation of 1-butene, and the max-imum yield of maleic anhydride was observed for the catalyst calcined at 520℃. The kinetics data were studied with a redox mechanism. The data obtained under the conditions of low partial pressure of butene could be explained in terms of the pseudo-first order kinetics.

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