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| H3PW12O40 /SBA-15固体酸的制备、表征及催化煎炸废油环氧化性能研究 |
| Preparation and characterization of H3PW12O40/SBA-15 solid acid and Preparation and characterization of H3PW12O40/SBA-15 solid acid and its catalysis in epoxidation of waste frying oil |
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| DOI： |
| 中文关键词: SBA-15分子筛 磷钨酸 煎炸废油 环氧化反应 生物质润滑油 |
| 英文关键词:SBA-15 molecular sieve phosphotungstic acid waste frying oil epoxidation reaction biomass lubricants |
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| 中文摘要: |
| 制备了SBA-15分子筛，以其为载体，采用超声浸渍法将磷钨酸负载其上，得到H3PW12O40固体酸催化剂。对固体酸催化剂进行了比表面积测定、孔径分布及傅里叶红外光谱(FTIR)表征，并考察了H3PW12O40/SBA-15催化剂对煎炸废油甲酯环氧化反应的催化性能。结果表明：制备的SBA-15分子筛具有较大的比表面积和高度有序的孔道，负载了磷钨酸的SBA-15分子筛既保持了Keggin结构，也没有破坏SBA-15分子筛的孔道结构；磷钨酸负载量在20%～60%范围内，随磷钨酸负载量的增加，催化性能减弱；当磷钨酸负载量为20%、反应时间为10 h、反应温度为30?℃时，环氧化产品碘值（I）达到21.72 g/100 g，环氧值为5.5 mol/100 g。 |
| 英文摘要: |
| H3PW12O40/?SBA-15 solid acid catalyst was prepared by loading SBA-15 molecular sieve with phosphotungstic acid by ultrasound-assisted impregnation. The specific surface area measurement, pore size distribution, and Fourier transform infrared spectroscopy (FTIR)of solid acid catalyst were characterized. The catalytic performance of H3PW12O40/SBA-15 catalyst for the epoxidation of waste frying oil methyl ester was investigated. The results showed that the prepared SBA-15 molecular sieve had a large specific surface area and a highly ordered pore, and the SBA-15 molecular sieve loaded with phosphotungstic acid maintained the Keggin structure and didnt destroy the pore structure of the SBA-15 molecular sieve. The catalytic performance decreased with the increase of phosphotungstic acid loading amount in the range of 20%-60%. Under the conditions of phosphotungstic acid loading amount 20%, reaction time 10 h and reaction temperature 30?℃, the iodine value of the product could reach 2172 gI/100 g and the epoxy value was 5.5 mol/100 g. |
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