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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 19, Number 6
JKCSEZ 19(6)
December 20, 1975

Title	Electrical Conductivity Studies of Ethanol Oxidation over Zinc Oxide 전기전도도 측정에 의한 ZnO 상의 에탄올 산화반응 연구
Author	Hakze Chon 전학제
Keywords
Abstract	에탄올의 산화반응중의 칼륨을 dope 한 산화아연의 전기전도의 변화를 250~350℃에서 측정하였다. 산화아연 상에서는 탈수소 및 탈수반응이 일어난다. 300℃이상에서 CO2의 생성과 이에 따르는 전기전도의 증가를 보였는데 이것은 아세트알데히드의 분해에 의해 생긴 CO의 산화반응에 의한 것이 아닌가 본다. 에탄올에 산소를 가하면 아세트알데히드의 생성은 증가하나 에틸렌의 생성에는 변화가 없었다. 이것은 주로 O-로서 화학흡착 되어있는 산소가 에탄올 흡착과 이에 따른 탈수소 과정에 유리하게 작용하고 있는 것이 아닌가 한다. Changes in the electrical conductivity of gallium doped zinc oxide during the dehydrogenative oxidation of ethanol between 250 and 350℃ have been studied. Both dehydrogenation and dehydration of ethanol takes place on ZnO. At 300℃ and above formation of CO2 was observed accompanied by an increase in the electrical conductivity. This seems to be due to oxidation of CO formed by the decomposition of acetaldehyde. Addition of oxygen to ethanol increases the amount of acetaldehyde formed, while no change is observed in ethylene formation. It may be that oxygen which is present primarily as O- provides a favorable site for the adsorption of ethanol and for subsequent hydrogen substraction.
Page	423 - 427
Full Text	PDF

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