| 制备工艺对NiFe2O4分解CO2活性的影响 |
| Effect of NiFe2O4 Processing Technology on Decomposition of CO2 |
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| 摘要: |
| 关键词: 制备工艺 NiFe2O4 微结构 CO2分解 |
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| Abstract: Ultra-fine NiFe2O4 particles were prepared by co-precipitation, citrates sol-gel and hydrothermal methods, respectively. The relationships between decomposition of CO2 and microstructure of NiFe2O4 were studied by means of XRD, H2-TPR and low temperature N2 sorption isotherms. The crystallite size and the pore structure of samples were different with different synthesis methods. Although all samples were nano crystals with single spinel NiFe2O4 structure, their H2-reduction processes were different. NiFe2O4 prepared by co-precipitation methods had the smallest average crystallite size and the largest BET surface areas and showed the best decomposition activity, while NiFe2O4 prepared by hydrothermal method had the biggest average crystallite size and the smallest BET surface areas and the worst decomposition activity. The phases content, crystallite size and the performance on decomposing CO2 were different for different NiFe2O4 according to the results of XRD Rietveld analysis. |
| Keywords: processing technology NiFe2O4 microstructure decomposition of CO2 |
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| 马令娟,陈林深,陈诵英.制备工艺对NiFe2O4分解CO2活性的影响[J].无机化学学报,2007,23(2):329-334. |
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