Skeletal isomerization of 1-butene over ferrierites dealuminated in solid state with crystalline (NH4)2[SiF6]

G. Pal-Borbely, H. K. Beyer

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Ferrierites were prepared by conventional hydrothermal synthesis and recrystallization of magadiite in solid state and subjected, also in solid state, to partial dealumination by reaction with admixed crystalline (NH4)2[SiF6] at 175-190 °C. It was found that the process is self-inhibited at rather low dealumination degrees due to deposition of reaction products in the pore system of ferrierites which also decreases the accessibility of acid sites to reactants and larger probe molecules. Acid leaching counteracts these undesired restrictions. For comparison ferrierite was also dealuminated by steaming. The products were characterized by XRD, FTIR and 27Al MAS NMR spectroscopy and thermal analysis and tested as catalysts in the skeletal isomerization of 1-butene. Solid-state dealumination with (NH4)2[SiF6] followed by acid leaching resulted in a significant improvement in the catalytic activity, selectivity and stability.

Original languageEnglish
Pages (from-to)383-390
Number of pages8
JournalStudies in Surface Science and Catalysis
Volume125
Publication statusPublished - Jan 1 1999

ASJC Scopus subject areas

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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