Surface organometallic chemistry on zeolites: control of the pore opening of mordenite by grafting of thermally stable GeBu3 fragments

Christophe Nédez, Agnès Choplin, Judith Corker, Jean-Marie Maurice Basset*, Jean François Joly, Eric Benazzi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

GeBu4 reacts at 250°C with the external silanols of two different mordenites (Si/Al = 11 or 40) to give the surface organometallic complex SiOGeBu3 1 which has been characterized by 13C CP-MAS NMR; 1 is able to discriminate sterically different alkanes such as n-hexane, 2-methyl-pentane, 2,3-dimethyl butane, 2,2,4-trimethyl pentane. Such discrimination is parallel to that already observed for SiOSnBu3 grafted on the same mordenites. Interestingly and in contrast to the behaviour of the grafted tin complex, 1 even after treatment at 400°C is still able to separate n-hexane from isooctane, a property ascribed to a steric molecular control of the Ge(Bu)3 fragment which has an exceptional thermal stability.

Original languageEnglish (US)
JournalJournal of molecular catalysis
Volume92
Issue number3
DOIs
StatePublished - Sep 13 1994

Keywords

  • Germanium
  • Grafting
  • Mordenite
  • Pore opening
  • Surface chemistry
  • Tributylgermanium fragments
  • Zeolites

ASJC Scopus subject areas

  • Engineering(all)

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