Coke deactivation of HZSM-5, SAPO-18 and SAPO-34 catalysts in the selective production of propylene from n-butene

  • M. Ibañez
  • , E. Epelde*
  • , P. Castaño
  • , M. Gamero
  • , A. T. Aguayo
  • , A. G. Gayubo
  • , J. Bilbao
  • *Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

Deactivation by coke of a HZSM-5 zeolite and severe shape selectivity catalysts (SAPO-18 and SAPO-34) were studied in the cracking of 1-butene. The coke was characterized and the effect of shape selectivity and different acidity of the catalysts on the coke composition and structure were determined. SAPO-18 and SAPO-34 catalysts exhibited higher severity of shape selectivity than the HZSM-5 zeolite. The yields of non-aromatic C5+ and BTX lumps decreased due to steric limitations. High values of propylene yield and selectivity were observed in the case of SAPO-18 and SAPO-34 compared to those obtained with the HZSM-5 zeolite. SAPO-34 was more active and gave a higher yield of propylene than that of the SAPO-18. The deactivation of SAPO-34 is faster than that for the SAPO-18. This is an abstract of a paper presented at the CHISA 2012 - 20th International Congress of Chemical and Process Engineering and PRES 2012 - 15th Conference PRES (Prague, Czech Republic 8/25-29/2012).

Original languageEnglish
Publication statusPublished - 2012
Externally publishedYes
Event20th International Congress of Chemical and Process Engineering, CHISA 2012 and 15th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2012 - Prague, Czech Republic
Duration: 25 Aug 201229 Aug 2012

Conference

Conference20th International Congress of Chemical and Process Engineering, CHISA 2012 and 15th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2012
Country/TerritoryCzech Republic
CityPrague
Period25/08/1229/08/12

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