Tailoring of the structure of Pt/WO3–ZrO2 catalyst for high activity in skeletal isomerization of C5–C6 paraffins under indust

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• 作者：José M. Hidalgo ; Dalibor Kaucky ; Oleg Bortnovsky…
• 关键词：Pt/WOx–ZrO2 catalyst ; Isomerization of C5–C6 paraffins ; Heteroatom ; substituted zirconia
• 刊名：Research on Chemical Intermediates
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：41
• 期：12
• 页码：9425-9437
• 全文大小：918 KB
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• 作者单位：José M. Hidalgo (1)
  Dalibor Kaucky (2)
  Oleg Bortnovsky (3)
  Zdeněk Sobalík (2)
  Radek ?erny (1)
  
  1. Department of Efficient Refining Technologies (UniCRE-EFFRET), Research Institute of Inorganic Chemistry (VUAnCh), Chempark Litvínov, 43670, Litvínov, Czech Republic
  2. J. Heyrovsky Institute of Physical Chemistry, AVCR, 182 23, Prague, Czech Republic
  3. Eurosupport Manufacturing Czechia Ltd., 43670, Litvínov, Czech Republic
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Physical Chemistry
  Inorganic Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1568-5675

文摘

Optimized Pt/WO₃–ZrO₂ catalysts were evaluated in the isomerization of C₅–C₆ paraffins. The catalysts were tailored for optimal activity and selectivity using both the model C₆ paraffin mixtures and C₅–C₆ real raw feeds from the industrial production of high quality gasoline. The optimization included a study of the role of the structure of Pt/WO₃–ZrO₂ undoped and doped with aluminum, with focus on the nuclearity and nature of WO₃ species. The heterogeneity of the structure, acid and redox properties were analysed using UV–Vis and Raman, and supplemented by temperature programmed reduction with hydrogen and desorption of ammonia. The results show a maximum achieved increment of R.O.N. = 14, using a mixture of hexane isomers (hexane g.r.) as raw material, which demonstrated the potential of these materials for an environmentally friendly process for the improvement of transportation fuels. Keywords Pt/WO_x–ZrO₂ catalyst Isomerization of C₅–C₆ paraffins Heteroatom-substituted zirconia