| 镍含量对NiO/SiO2气凝胶性能的影响 |
| Effect of Ni Content on the Properties of NiO/SiO2 Aerogel Catalyst |
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| 摘要: |
| 关键词: 溶胶-凝胶法 NiO/SiO2气凝胶催化剂 相互作用 |
| 基金项目: |
| 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 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. |
| Keywords: sol-gel method NiO/SiO2 aerogel catalysts interactions |
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| 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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