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규조토 담지 산화아연 촉매의 수소처리 효과

Effect of Hydrogen Treatment on Zinc Oxide Catalyst Supported over Kieselguhr

홍명선 박상언

Hong MS Park SE

HWAHAK KONGHAK, October 1985, 23(5), 289-293(5)
https://doi.org/NONE

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Abstract

2차 부틸 알코올의 탈수소 반응에 의한 메틸에틸케톤 제조시 사용되는 산화아연 촉매는 수소 처리에 의해 촉매의 반응성이 증가될 뿐 아니라 탈수반응이 감소되어 촉매의 선택성이 향상되었다. 또한 촉매의 수명도 수소처리하지 않은 촉매에 비해 상당히 연장되었다. 그러나 과도한 수소처리는 아연성분의 무리（cluster） 현상을 야기시켜 아연결정체(Zinc crystallite)를 생성시킴으로써 산화아연 촉매의 탈수소 반응에 대한 활성을 감소시켰다.

In manufacturing methyl ethyl ketone by dehydrogenation of secondary-butyl alcohol, the hydrogen treatment of zinc oxide enhances the catalytic activity and the selectivity with decreasing dehydration reaction. Also, the catalyst lifetime of hydrogen treated zinc oxide is much longer than that of nonhydrogen-treated zinc oxide.
But, excessive hydrogen treatment of zinc oxide catalyst leads to the cluster phenomenon to form zinc crystallite which results in deactivation of dehydrogenation reaction.

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