| TiO2光催化消除H2S的研究 |
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| 引用本文： | 郭建辉,金振声,张敏,黄勇,杨建军,张治军.TiO2光催化消除H2S的研究[J].影像科学与光化学,2004,22(3):211-217. |
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| 作者姓名： | 郭建辉 金振声 张敏 黄勇 杨建军 张治军 |
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| 作者单位： | 河南大学, 特种功能材料重点实验室, 河南, 开封, 475001 |
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| 摘 要： | 在TiO2上进行了气相H2S光催化氧化消除的研究.氧对H2S的光催化氧化消除过程是不可缺少的,对含量为560mg/m3的H2S,当加入的氧气与原料气中H2S的分子比为42:1,空速为28000h-1时,去除率达到97%.在H2S光催化氧化消除过程中,单质硫的产生可使TiO2失活,经光照再生单质硫转化为SO42-后,TiO2活性恢复,而且SO42-的生成对催化剂的中毒有抑制作用.
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| 关 键 词： | TiO2 H2S 光催化 SO42- |
| 收稿时间： | 2003-11-27 |
Photocatalytic-Oxidation of H2S on TiO2 |
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| GUO Jian-hui,JIN Zhen-sheng,ZHANG Min,HUANG Yong,YANG Jian-jun,ZHANG Zhi-jun.Photocatalytic-Oxidation of H2S on TiO2[J].Imaging Science and Photochemistry,2004,22(3):211-217. |
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| Authors: | GUO Jian-hui JIN Zhen-sheng ZHANG Min HUANG Yong YANG Jian-jun ZHANG Zhi-jun |
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| Institution: | Laboratory of special and functional materials, Henan University, Kaifeng 475001, Henan, P. R. China |
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| Abstract: | The photocatalytic-oxidation of H_2S on TiO_2 was investigated.Oxygen is indispensable for the photodestruction of H_2S.When the mol ratio of oxygen to H_2S was 42∶1 in the raw gas,the degradation of H_2S reached 97% with 28000 h~(-1) volume space velocity.TiO_2 catalyst can be poisoned by S~0. After TiO_2 catalyst was regenerated by light in the presence of air,S~0 was converted to SO_4~(2-),the photocatalytic activity of TiO_2 was recovered.The presence of surface SO_4~(2-) can stabilize the photocatalytic activity of TiO_2. |
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| Keywords: | TiO_2 H_2S photocatalytic SO_4~(2-) |
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