| 镍含量对NiO/SiO2气凝胶性能的影响 |
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| 引用本文： | 武志刚,赵永祥,许临萍,刘滇生.镍含量对NiO/SiO2气凝胶性能的影响[J].无机化学学报,2002,18(9):949-952. |
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| 作者姓名： | 武志刚 赵永祥 许临萍 刘滇生 |
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| 作者单位： | 山西大学化学化工学院,太原,030006 |
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| 基金项目： | 山西省自然科学基金资助项目(No.20011008)。 |
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| 摘 要： | A series of NiO/SiO2 aerogel catalysts were prepared by sol-gel method. The effects of the nickel content on the structure and existing forms of NiO/SiO2 aerogel catalysts were investigated by using XRD, TPR and FT-IR. The results showed that there were interactions between NiO and SiO2. But as nickel content increased, the in-teraction decreased. The nickel oxide in the catalysts appeared in different forms as nickel content was changed. When the content was less than 13%, Ni(Ⅱ) entered into the SiO2 structure completely and it became clusters after calcining. If the content altered from 20% to 50%, NiO existed as both microcrystal and clusters, the later spices was dominating. However, when the content increased to 70%, microcrystal became the primary components.
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| 关 键 词： | 溶胶-凝胶法 NiO/SiO2气凝胶催化剂 相互作用 |
| 修稿时间： | 2002年5月8日 |
Effect of Ni Content on the Properties of NiO/SiO2 Aerogel Catalyst |
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| WU Zhi-Gang,ZHAO Yong-Xiang,XU Lin-Ping and LIU Dian-Sheng.Effect of Ni Content on the Properties of NiO/SiO2 Aerogel Catalyst[J].Chinese Journal of Inorganic Chemistry,2002,18(9):949-952. |
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| Authors: | WU Zhi-Gang ZHAO Yong-Xiang XU Lin-Ping and LIU Dian-Sheng |
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| Institution: | College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006,College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006,College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006 and College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006 |
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| Abstract: | A series of NiO/SiO2 aerogel catalysts were prepared by sol gel method. The effects of the nickel content on the structure and existing forms of NiO/SiO2 aerogel catalysts were investigated by using XRD, TPR and FT IR. The results showed that there were interactions between NiO and SiO2. But as nickel content increased, the interaction decreased. The nickel oxide in the catalysts appeared in different forms as nickel content was changed. When the content was less than 13%, Ni? entered into the SiO2 structure completely and it became clusters after calcining. If the content altered from 20% to 50%, NiO existed as both microcrystal and clusters, the later spices was dominating. However, when the content increased to 70%, microcrystal became the primary components. |
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| Keywords: | sol-gel method NiO/SiO2 aerogel catalysts interactions |
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