| 何垚,文振中,杨丹,孟志强.Al2O3/WO3/ZrO2催化剂的制备及在酯交换反应中的研究[J].有色金属材料与工程,2018,39(1):19-24. |
| Al2O3/WO3/ZrO2催化剂的制备及在酯交换反应中的研究 |
| Preparation of Al2O3/WO3/ZrO2 Catalyst and Research on Transesterification of Stillingia Oil |
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| DOI：10.13258/j.cnki.nmme.2018.01.004 |
| 中文关键词: 模板法 WO3/ZrO2催化剂 生物柴油 酯交换反应 |
| 英文关键词:template method WO3/ZrO2 catalyst biodiesel transesterification |
| 基金项目:国家自然科学基金青年项目（21206091） |
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| 中文摘要: |
| 以松木为模板，采用模板法将不同含量的Al2O3添加到WO3/ZrO2复合氧化物中，采用X射线衍射、BET比表面积分析、拉曼光谱和NH3等温吸附测试等手段对其进行表征，以评估其改进结果。将Al2O3/WO3/ZrO2催化剂应用到甲醇与乌桕油（非食用油）的酯交换反应中，在其他反应条件相同，Al2O3质量分数为3%时，生物柴油最高产率达到83.1%。结果表明：添加Al2O3稳定了ZrO2的四方相结构，使得催化剂比表面积更大、孔数量增加；模板法制备的催化剂孔径分布均匀，WO3呈高度分散无定型状态；引入Al2O3增加了WO3/ZrO2催化剂的中强酸性，对弱酸性和强酸性无明显改变。 |
| 英文摘要: |
| With pine sawdust chosen as the template,different contents of Al2O3 were added to the WO3/ZrO2 compound oxide by template method and characterized by X-Ray diffraction,BET,Raman spectra and NH3-TPD techniques.The catalytic performance of Al2O3/WO3/ZrO2 catalyst was also evaluated in transesterification of methanol and stillingia oil.When Al2O3 mass ratio was 3%,the biodiesel yield approached 83.1%.The results show that the addition of Al2O3 does stabilize the tetragonal phase structure of ZrO2,resulting in a larger specific surface area and an increase in the number of pores.Meanwhile,the template method also led to a more homogenous pore-size distribution and a highly spread amorphous tungsten in the catalyst.Adding Al2O3 enforced the medium-strong acidity,while it had not much effect on the weak or strong acidity. |
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