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Issue
Korean Journal of Chemical Engineering,
Vol.27, No.2, 465-468, 2010
Acidity and acid catalysis of polyatom-substituted HnPW11M1O40 (M=V, Nb, Ta, and W) Keggin heteropolyacid catalysts
Park DR, Hong UG, Song SH, Seo JG, Baeck SH, Chung JS, Song IK
Acidity of polyatom-substituted HnPW11M1O40 (M=V, Nb, Ta, and W) Keggin heteropolyacids (HPAs) was measured by NH3-TPD experiments. Acidity decreased in the order of H3PW11W1O40>H4PW11V1O40>H4PW11Nb1O40>H4PW11Ta1O40. Vapor-phase dehydration of cyclohexanol was conducted as a model reaction to correlate the acidity with the acid catalysis of HPA catalysts. Yield for cyclohexene (a product by acid catalysis) increased with increasing acidity of HnPW11M1O40 (M=V, Nb, Ta, and W) HPA catalysts. The acidity of HnPW11M1O40 (M=V, Nb, Ta, and W) HPA catalysts could be utilized as a probe of acid catalysis for dehydration of cyclohexanol.
Keywords: Heteropolyacid; Polyatom Substitution; Acid Catalysis; Dehydration of Cyclohexanol
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[Cited By]
  1. Sun P, Yu DH, Hu Y, Tang ZC, Xia JJ, Li H, Huang H, Korean Journal of Chemical Engineering, 28(1), 99, 2011
  2. Choi JH, Park DR, Park S, Song IK, Korean Journal of Chemical Engineering, 28(11), 2137, 2011
  3. He M, Pan A, Xie J, Li H, Yuan X, Cheng X, Chen M, Korean Journal of Chemical Engineering, 29(10), 1388, 2012
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