| 掺入SiO_2对TiO_2热催化剂的影响 |
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| 引用本文： | 刘媛,龙千明,白云鹤,吕斯濠,范洪波.掺入SiO_2对TiO_2热催化剂的影响[J].工业催化,2010,18(9):70-73. |
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| 作者姓名： | 刘媛 龙千明 白云鹤 吕斯濠 范洪波 |
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| 作者单位： | 1.华南理工大学环境科学与工程学院，广东 广州 510006；2.东莞理工学院化学与环境工程学院，广东 东莞 523808 |
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| 摘 要： | 以ZrO_2为载体,掺入SiO_2的TiO_2作为活性成分,制备负载型催化剂,考察掺入SiO_2对TiO_2热催化剂的影响。结果表明,掺入SiO_2后生成Ti—O—Si,使TiO_2和ZrO_2载体结合的更为牢固。SiO_2能有效抑制TiO_2从锐钛矿转变成金红石,同时抑制锐钛矿型的生成。掺入SiO_2物质的量分数达到15%时,900℃焙烧仍能得到100%的锐钛矿。TiO_2-SiO_2在ZrO_2表面形成薄层,并出现龟裂,可能是因为掺入SiO_2所致。
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| 关 键 词： | 催化化学 TiO2热催化剂 负载型催化剂 SiO2 ZrO2 锐钛矿 金红石 |
Study on the influence of TiO2 thermal catalyst adulterated with SiO2 |
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| LIU Yuan,LONG Qianming,BAI Yunhe,L Sihao,FAN Hongbo.Study on the influence of TiO2 thermal catalyst adulterated with SiO2[J].Industrial Catalysis,2010,18(9):70-73. |
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| Authors: | LIU Yuan LONG Qianming BAI Yunhe L Sihao FAN Hongbo |
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| Affiliation: | 1.College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China; 2.College of Chemistry and Environmental Engineering, Dongguan University of Technology, Dongguan 523808, Guangdong, China |
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| Abstract: | The supported catalysts were prepared using ZrO2 as carriers, TiO2 adulterated with SiO2 as active components. The influence of doping SiO2 on TiO2 thermal catalyst was investigated. The experi- mental results showed that after doping SiO2, TiO2 thermal catalyst generated Ti--O--Si bond, which made TiO2 and ZrO2 combine tighter; SiO2 could not only effectively suppress TiO2 change from anatase into rutile, but also inhibited the formation of anatase; 100% anatase could still be got when TiO2-SiO2 catalyst with SiO2 doping amount of 15mol% was calcined at 900 ℃ ; TiO2-SiO2 formed a thin layer on the surface of ZrO2 and the thin layer had chap due to SiO2 doping. |
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| Keywords: | SiO2 ZrO2 |
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