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몰리브데나-알루니마 촉매의 세슘 첨가효과 (I)

Effect of Cesium Additives on Molybdena-Alumina Catalyst(I)

문세기 김형진 강신춘 서교택

Moon SK Kim HJ Kang SC Seo KT

HWAHAK KONGHAK, June 1986, 24(3), 195-201(7), NONE

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Abstract

Mo-Al₂O₃ 촉매의 세슘첨가량에 따른 산염기특성의 변화를 알아보기 위하여 pyridine의 흡착량을 측정하였으며, probe reaction으로서 이소프로필 알코올의 분해반응실험을 수행하였다. 세슘량이 증가함에 따라 이소프로필 알코올의 탈수반응활성은 감소하였고, 탈수소반응의 활성은 증가하다가 감소하는 양상을 나타내었다. 또한 pyridine의 흡착량은 세슘함유량이 증가함에 따라 감소하였다.
이러한 실험결과들로부터 세슘첨가에 따라 Molybdena-Alumina촉매의 산점수는 감소함을 알았다.

In order to study the acid-base properties of the cesium-containing molybdena-alumina catalysts, the amount of adsorbed pyridine was measured and the decomposition of isopropyl alcohol as a probe reaction was carried out. As the cesium-content was increased, the dehydration activity of isopropyl alcohol was decreased and the dehydrogenation activity passed through a maximum.
Adsorbed amount of pyridine was increased with increase in cesium-content.
These results suggest that cesium additives lead to decrease the amount of acid sites.

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