Crystallization field study for the formation of single phase sodium clinoptilolite: Batch composition, seed and temperature effects

Guevenir O., KALIPÇILAR H., Culfaz A.

CRYSTAL RESEARCH AND TECHNOLOGY, cilt.44, sa.3, ss.293-299, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 44 Sayı: 3
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1002/crat.200800358
  • Dergi Adı: CRYSTAL RESEARCH AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.293-299
  • Anahtar Kelimeler: clinoptilolite, crystallization, seeded growth, ELECTRON-SPIN-RESONANCE, SYNTHETIC CLINOPTILOLITE, HYDROTHERMAL SYNTHESIS, ADSORBATE INTERACTIONS, MOLECULAR-SIEVES, ECHO MODULATION, ZEOLITES
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Although clinoptilolite is the most abundant zeolite mineral in nature, its synthesis under laboratory conditions has been difficult. A partial crystallization field study was done for the synthesis of clinoptilolite based on a nominal batch composition of 2.1Na(2)O:Al2O3:10Si(2)O:110H(2)O to delineate the limits of composition and temperature within which sodium clinoptilolite can be produced as a single phase in high yields. Effects of temperature, SiO2/Al2O3 molar ratio in the batch composition, and the use of different raw materials in batch preparation were studied. The need for the use of seed crystals for reproducible synthesis of clinoptilolite was established. (c) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim