负载型Cs<sub>2</sub>O固体碱催化剂的制备及催化酯交换反应性能

宋华民; 李继红; 徐桂转; 张百良; 尚 升

负载型Cs₂O固体碱催化剂的制备及催化酯交换反应性能

1.
农业部可再生能源重点实验室，河南农业大学机电工程学院，郑州 450002
2.
生物质发电成套设备国家工程实验室，华北电力大学可再生能源学院，北京 102206
3.
农业部可再生能源重点实验室，河南农业大学机电工程学院，郑州 450004
4.
农业部可再生能源重点实验室，河南农业大学机电工程学院，郑州 450005
5.
农业部可再生能源重点实验室，河南农业大学机电工程学院，郑州 450006

基金项目: 河南省杰出人才创新基金项目（0321001300）

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出版历程
- 收稿日期: 2008-01-18
- 修回日期: 2008-12-29
- 发布日期: 2009-03-30

Preparation of supported Cs₂O solid base catalysts and performance of catalyzing transesterification reaction

1.
Key Laboratory of Renewable Energy of Ministry of Agriculture, College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
2.
National Engineering Laboratory of Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing 102206, China
3.
Key Laboratory of Renewable Energy of Ministry of Agriculture, College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
4.
Key Laboratory of Renewable Energy of Ministry of Agriculture, College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
5.
Key Laboratory of Renewable Energy of Ministry of Agriculture, College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China

摘要

摘要: 以Cs₂CO₃作为催化剂前驱体，利用γ-Al₂O₃、TiO₂、MgO、SiO₂、CaO和NaY型分子筛6种不同的载体，在700℃下焙烧，制备Cs₂O固体碱催化剂，并用其催化菜籽油酯交换反应制取生物柴油。结果表明，以γ-Al₂O₃、MgO和CaO均能制备出超强固体碱，根据制备出的固体碱催化酯交换反应的酯交换率和产物分离性能分析，γ-Al₂O₃是最适合的载体。以Cs₂CO₃为前驱体，以γ-Al₂O₃为载体开展的催化剂试验结果表明：固体碱的最佳制备工艺条件为：煅烧温度700℃，煅烧时间5 h，煅烧气氛为N2。在此工艺条件下，制取的催化剂用于催化菜籽油的酯交换率达到了95.5%。
- 固体碱催化剂 /
- 载体 /
- 生物柴油 /
- Cs₂O /
- 酯交换反应
Abstract: Supported Cs₂O solid base catalysts were prepared with Cs₂CO₃ as catalyst precursors and γ-Al₂O₃, MgO, CaO, TiO₂, SiO₂ and NaY molecular sieve as supports at calcination temperature of 700℃. These catalysts were used to catalyze transesterification reaction for biodiesel production from rapeseed oil. The results showed that solid super bases could be prepared with γ-Al₂O₃, MgO and CaO, and γ-Al₂O₃ was the optimal support considering both transesterification ratio and separation performance. The optimal process conditions preparing solid base with Cs₂CO₃ and γ-Al₂O₃ were as follows: calcination temperature of 700℃, calcination time of 5 h and atmosphere of N2. Transesterification ratio reached 95.5% when using the catalyst prepared under these optimized conditions.
- solid base catalysts /
- supports /
- biodiesel /
- Cs₂O /
- transesterification reaction