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      공업화학 촉매 / 반응공학 / 다공성 Al2O3 관에 고정된 TiO2 를 이용한 기상 아세트 알데히드의 광촉매 분해 = The Photocatalytic Decomposition of Acetaldehyde in Gas Phase Using Immobilized TiO2 on Porous Al2O3 Tube

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      https://www.riss.kr/link?id=A3091027

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      A study on photocatalytic degradation of acetaldehyde was carried out by using the immobilized TiO₂on a porous α-Al₂O₃tube. TiO₂was immobilized by sol-gel method or suspension coating method. The photocatalyst prepared by the suspension coating method showed the highest reactivity toward photocatalytic decomposition of acetaldehyde. Effective thickness of TiO₂ layer was estimated to be about l0 ㎛. Both O₂and H₂O could initiate the photooxidation. O₂showed promotional effect on the photocatalytic oxidation, which H₂O exhibited inhibition effect. The photocatalytic oxidation of acetaldehyde rate decreased with increasing initial concentration and showed first order expression. In the range of 25-70 ℃, photodecomposition of acetaldehyde was not affected by the temperature.
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      A study on photocatalytic degradation of acetaldehyde was carried out by using the immobilized TiO₂on a porous α-Al₂O₃tube. TiO₂was immobilized by sol-gel method or suspension coating method. The photocatalyst prepared by the suspension coati...

      A study on photocatalytic degradation of acetaldehyde was carried out by using the immobilized TiO₂on a porous α-Al₂O₃tube. TiO₂was immobilized by sol-gel method or suspension coating method. The photocatalyst prepared by the suspension coating method showed the highest reactivity toward photocatalytic decomposition of acetaldehyde. Effective thickness of TiO₂ layer was estimated to be about l0 ㎛. Both O₂and H₂O could initiate the photooxidation. O₂showed promotional effect on the photocatalytic oxidation, which H₂O exhibited inhibition effect. The photocatalytic oxidation of acetaldehyde rate decreased with increasing initial concentration and showed first order expression. In the range of 25-70 ℃, photodecomposition of acetaldehyde was not affected by the temperature.

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