| 仝姗,程谦伟,刘昭明,孟陆丽,韦潇丽.Al-Zr-CeO2固体酸催化剂的制备及其油脂环氧化性能研究[J].中国粮油学报,2019,34(4):75-82 |
| Al-Zr-CeO2固体酸催化剂的制备及其油脂环氧化性能研究 |
| Preparation of Al-Zr-CeO2 solid acid catalyst and research on oil epoxidation |
| 投稿时间：2018-06-29 修订日期：2018-09-03 |
| DOI： |
| 中文关键词: Al-Zr-CeO2 固体酸 制备 表征 环氧化 |
| 英文关键词:Al-Zr-CeO2 solid acid preparation characterization cyclic oxidation |
| 基金项目:国家自然科学基金(51763001)；广西高校糖资源加工重点实验室(2016TZYKF11) |
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| 中文摘要: |
| 采用离子交换法和浸渍法制备Al-Zr-CeO2固体酸催化剂,利用SEM、XPS、XRD、FT-IR和氮气吸附—脱附对固体酸催化剂进行了表征,结果表明：Al2O3和ZrO2负载在CeO2表面,大大提升了Al-Zr-CeO2复合催化剂的比表面性能,在高温下仍有较高的比表面积,且催化效果显著。同时以大豆油的环氧化反应为探针反应,考察了煅烧温度、煅烧时间、Al(NO3)3/CeO2的质量比和 Zr(NO3)4/CeO2的质量比对催化剂Al-Zr-CeO2催化活性的影响。催化剂的最佳制备条件为：煅烧温度为400℃,煅烧时间为2h,Al(NO3)3/CeO2的质量比为0.2,Zr(NO3)4/CeO2的质量比为0.2。该条件下制备的催化剂催化大豆油的环氧化反应时,环氧值可达到5.54%。 |
| 英文摘要: |
| Al-Zr-CeO2 solid acid catalysts were prepared by ion exchange and Impregnation method, and the solid acid catalysts were characterized by SEM, XPS, XRD, FT-IR and nitrogen adsorption-desorption, the results showed that Al2O3 and ZrO2 load on CeO2 surface, the specific surface properties of Al-Zr-CeO2 composite catalysts are greatly improved, and there is high specific surface area at high temperature, and the catalytic effect is remarkable. The effects of calcination temperature, calcination time, mass ratio of Al(NO3)3/CeO2 and Zr(NO3)4/CeO2 on the catalytic activity of Catalyst Al-Zr-CeO2 were investigated by the reaction of the epoxidation of soybean oil. The optimum conditions for preparing the catalyst are: calcination temperature is 400℃, calcination time is 2h,Al(NO3)3/CeO2 quality ratio is 0.2,Zr(NO3)4/CeO2 the mass ratio is 0.2. The epoxidation of soybean oil catalyzed by catalyst prepared under this condition can reach 5.54%. |
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