Effect of transition metal doping on crystallization of cloverite

Masatoshi Yoshino, Motohide Matsuda, Michihiro Miyake

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

Gallophosphate molecular sieves containing Mn, Co and Zn have been hydrothermally synthesized at 170 °C, using starting gels with transition metals, and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), etc. Each starting gel yielded cloverite (CLO)-type phase, and its crystallinity depended on the kind of transition metal in the starting gel. The addition of a small amount of ZnO to the starting gel was observed to be useful for the preparation of Zn-doped cloverite (Zn-CLO) with good crystallinity, i.e. ZnO promoted crystal growth. The results of estimated unit cells and chemical analysis suggested that Mn2+ and Zn2+ ions were incorporated into the frameworks of Mn- and Zn-doped cloverites (Mn-CLo and Zn-CLO), respectively.

Original languageEnglish
Pages (from-to)269-274
Number of pages6
JournalSolid State Ionics
Volume151
Issue number1-4
DOIs
Publication statusPublished - Nov 1 2002
EventSSP- 2000 - Tokyo, Japan
Duration: Dec 11 2000Dec 13 2000

Keywords

  • Cloverite
  • Crystallization
  • Gallophosphate
  • Molecular sieve
  • Synthesis
  • Transition metal doping

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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