Structure of the novel large pore allosilicate TNU–7

S J Warrender, Paul Anthony Wright, Wuzong Zhou, Philip Lightfoot, M A Camblor, C H Shin, D J Kim, S B Hong

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The Structure of a novel large pore gallosilicate zcolite, TNU-7, has been refined from X-ray powder diffraction data. The silicate framework is built Lip from two different types of layer which are shown by X-ray and electron diffraction to be arranged in a fully ordered way. This gives rise to 12-MR pores and asymmetric cation distributions. TNU-7 is prepared hydrothemally over a very narrow compositional range and only in the presence of Ga. Other zeolitic phases crystallise at lower and higher Ga contents confirming the unique structure-directing ability of this element. The location of ion exchanged Cs+ and Sr2+ cations in TNU-7 has been Studied by high resolution X-ray powder diffraction.

Original languageEnglish
Pages (from-to)89-96
JournalStudies in Surface Science and Catalysis
Volume158
Issue numberPart A-B
Publication statusPublished - 2005

Keywords

  • GALLIUM
  • TOPOLOGY

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