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A comparative study of physico-chemical and catalytic characterization of M-modified SZ catalysts (M = Pt, Nb or Re) in n-hexane isomerization

A. R. ZARUBICA1,2,* , G. BOSKOVIC1, P. PUTANOV3, D. KOSTIC2, M. POHL4

Affiliation

  1. Faculty of Technology, University of Novi Sad, Cara Lazara 1, 21000 Novi Sad, Serbia
  2. Faculty of Natural Sciences and Mathematics, University of Nis, Visegradska 33, 18000 Nis, Serbia
  3. Serbian Academy of Sciences and Arts, Knez Mihajlova 35, 11000 Belgrade, Serbia
  4. Leibniz Institute for Catalysis at University Rostock, Branch Berlin, Germany

Abstract

Three M-modified SZ catalysts (M = Pt, Nb or Re) are synthesized from Zr(IV)-alkoxide precursor and corresponded metal salts, and their physicochemical properties are correlated with activities in n-hexane isomerization reaction. Platinum performs a multifunctional role simultaneously stabilizing and promoting activity of the bare sulfated zirconia catalyst. The attempt of SZ-based catalyst modification by Nb and Re results in diminishing the catalytic efficiency. The key distinction in the resulted SZ-modification by concrete metal might be in different metal dispersion, being quite low in the case of two later catalysts. This implies the importance of metal precursor right choice, tailoring final catalyst properties..

Keywords

Isomerization of n-hexane, Metal modifier, Niobium, Platinum, Rhenium, Sulfated zirconia.

Submitted at: March 2, 2010
Accepted at: May 26, 2010

Citation

A. R. ZARUBICA, G. BOSKOVIC, P. PUTANOV, D. KOSTIC, M. POHL, A comparative study of physico-chemical and catalytic characterization of M-modified SZ catalysts (M = Pt, Nb or Re) in n-hexane isomerization, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 5, pp. 1183-1188 (2010)