Paper Title:
The Effect of Rare Earth Modification on the Structure and Catalytic Performance of SO42-/ZrO2 Solid Acid Catalysts
  Abstract

Rare earth modified SO2-4/ZrO2 solid acid catalysts were prepared by coprecipitation and impregnation methods respectively. The properties of the samples were characterized by XRD (X-ray diffraction), FT-IR (Fourier transform infrared spectroscopy). And their catalytic performances were evaluated and investigated by transesterification of waste oil with methanol. The results showed that the catalyst containing 4% Ce and calcined at 550°C displayed the highest production rate and the better reuse ability than the others. 63.5% yield of fatty acid methyl ester was achieved. An analysis of XRD patterns reveal that the incorporation of rare earth into tetragonal zirconia stabilizes the compound, and the calcination at 550°C increases the reactivity of the catalyst by producing a greater fraction of active tetragonal zirconia. It can be seen from the FT-IR spectra that superacids structures are formed in the catalysts and the acidity is strengthened remarkably and the activated centre of the catalyst were increasesed.

  Info
Periodical
Advanced Materials Research (Volumes 287-290)
Chapter
New Energy Materials
Edited by
Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li
Pages
1375-1378
DOI
10.4028/www.scientific.net/AMR.287-290.1375
Citation
Y. Chen, B. H. Wang, X. Sun, H. Li, "The Effect of Rare Earth Modification on the Structure and Catalytic Performance of SO42-/ZrO2 Solid Acid Catalysts", Advanced Materials Research, Vols. 287-290, pp. 1375-1378, 2011
Online since
July 2011
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$32.00
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