Preparation of Filler-type Solid Acid for Catalytic Distillation and Its Catalytic Activity

Abstract

Abstract: A novel solid acid SO₄^2-/Al₂O₃-Al catalyst for catalytic distillation was prepared by impregnation of anodized aluminium plates formed by anodic oxidation of high-purity aluminium foils with aqueous H₂SO₄, and characterized by SEM, BET, XRD and NH 3-TPD. XRD patterns of the samples show that the support anodized Al₂O₃ layer is amorphous oxide supporting. NH 3-TPD results show that the catalyst has intermediate acid sites. The catalyst was active for the esterification of acetic acid with ethanol, and can be reused directly for 5 times, which means the catalyst has a good stability.

Key words: Anodic oxidization, Solid acid, Catalytic distillation, Esterification

CLC Number:

O643.1

TrendMD:

DU Chang-Hai, WANG Shu-Jiang, YANG Ji, QIN Yong-Ning, HE Yan-Feng, MA Zhi . Preparation of Filler-type Solid Acid for Catalytic Distillation and Its Catalytic Activity[J]. Chem. J. Chinese Universities, 2004, 25(10): 1916.

References

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