| 抗水性固体酸SO42--TiO2-Clay催化剂的制备及应用 |
| Preparation and Catalytic Performance of Hydrophobic SO42--TiO2-Clay Solid Acid Catalyst |
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| 摘要: |
| 关键词: 抗水性固体酸 活性白土 酸化油 酯化 |
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| Abstract: A new solid acid of SO42--TiO2-Clay was supported on activated clay, and was applied to the esterification reaction of fatty acid with methanol. The influence of preparation conditions of the supported SO42--TiO2-Clay on the catalytic performance was studied using the above esterification reaction in a tank reactor. The supported SO42--TiO2 exhibited high catalytic activity and stability. The optimized conditions were as follows: reaction temperature 70 ℃, mmethanol∶mfatty acid=0.43∶1, catalyst amount of 5% on weight basis of fatty acid, and reaction time of 8 h. The catalytic activity was almost unchanged after twenty reaction recycles. The catalysts were also characterized by XRD, SEM, TGA/DSC, low temperature nitrogen adsorption-desorption and in situ FTIR. The results indicate that SO42--TiO2 is finely dispersed on the activated clay and the acidic center is typical of L-acid. These show that the activated clay as support of SO42--TiO2 is an efficient hydrophobic solid acid material. |
| Keywords: water-tolerant solid acid activated clay fatty acid esterification |
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| 张海荣,林西平,邬国英,于艇.抗水性固体酸SO42--TiO2-Clay催化剂的制备及应用[J].无机化学学报,2007,23(6):1111-1116. |
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