Paper Title:
α–Pinene Isomerization Catalyzed by a Nanometer Solid Superacid
  Abstract

Nanometer composite S2O82-/SnO2-TiO2, a novel solid superacid, was prepared by the sol-gel method and its structure was characterized by XRD, TEM, FT-IR and nitrogen adsorption. Results indicated that the composite S2O82-/SnO2-TiO2 had a narrow particle size distribution with an average particle diameter about 15~20nm. S2O82- combined with SnO2-TiO2 resulted in formation of strong acid sites on the surfaces. The surface area of catalysts obviously increased after incorporating SnO2. Nanometer S2O82-/ SnO2-TiO2 composite was used as a catalyst for a-pinene isomerization and the influence of catalyst preparation conditions on its performances were investigated. The optimum condition for superacid catalyst preparation was found to be with 2:1 Sn/Ti mole ratio, S2O82- 1 mol · L-1 of impregnation consideration and toasting temperature of 773K. With 3% of S2O82-/SnO2- TiO2 catalyst dosage at a reaction temperature at 403K for 2 h, the conversion of a-pinene was 98 % and the selectivity to camphene was 62 %.

  Info
Periodical
Advanced Materials Research (Volumes 295-297)
Chapter
Chapter 1: Materials Properties
Edited by
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
Pages
156-160
DOI
10.4028/www.scientific.net/AMR.295-297.156
Citation
C. H. Wu, Q. R. Zhao, J. Y. Zhang, D. D. Zhu, G. B. Du, "α–Pinene Isomerization Catalyzed by a Nanometer Solid Superacid", Advanced Materials Research, Vols. 295-297, pp. 156-160, 2011
Online since
July 2011
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Price
$32.00
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