Mechanism of zeolite X crystallization from diatomite

Guangyuan Yao, Jingjing Lei, Xiaoyu Zhang, Zhiming Sun, Shuilin Zheng, Sridhar Komarneni

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Here we systemically investigated the crystallization process of zeolite X using diatomite, a natural cost-effective silica precursor by the hydrothermal method. To decipher the mechanism, solids were separated from the mixtures at various stages of crystallization and were characterized by XRD, SEM, solid state NMR, FT-IR, UV-Raman and XRF. The XRD patterns revealed that the crystallization started between 3 and 3.5 h and ended by 5 h. The SEM images showed that the intermediate species of zeolite X appear on the surface of particles. The FT-IR and UV-Raman spectra suggested the presence of double six-membered rings (D6R) in the framework of zeolite X and they played a critical role in the crystallization process. Furthermore, the UV-Raman spectra indicated that the secondary building units of β cages formed the intermediate species and they were interconnected via double six-membered rings to form the framework of zeolite X.

Original languageEnglish (US)
Pages (from-to)132-138
Number of pages7
JournalMaterials Research Bulletin
Volume107
DOIs
StatePublished - Nov 1 2018

Fingerprint

Zeolites
Crystallization
crystallization
Raman scattering
Raman spectra
Scanning electron microscopy
scanning electron microscopy
rings
Silicon Dioxide
Silica
Nuclear magnetic resonance
silicon dioxide
solid state
costs
nuclear magnetic resonance
diatomite
Costs

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Yao, Guangyuan ; Lei, Jingjing ; Zhang, Xiaoyu ; Sun, Zhiming ; Zheng, Shuilin ; Komarneni, Sridhar. / Mechanism of zeolite X crystallization from diatomite. In: Materials Research Bulletin. 2018 ; Vol. 107. pp. 132-138.
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Mechanism of zeolite X crystallization from diatomite. / Yao, Guangyuan; Lei, Jingjing; Zhang, Xiaoyu; Sun, Zhiming; Zheng, Shuilin; Komarneni, Sridhar.

In: Materials Research Bulletin, Vol. 107, 01.11.2018, p. 132-138.

Research output: Contribution to journalArticle

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T1 - Mechanism of zeolite X crystallization from diatomite

AU - Yao, Guangyuan

AU - Lei, Jingjing

AU - Zhang, Xiaoyu

AU - Sun, Zhiming

AU - Zheng, Shuilin

AU - Komarneni, Sridhar

PY - 2018/11/1

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AB - Here we systemically investigated the crystallization process of zeolite X using diatomite, a natural cost-effective silica precursor by the hydrothermal method. To decipher the mechanism, solids were separated from the mixtures at various stages of crystallization and were characterized by XRD, SEM, solid state NMR, FT-IR, UV-Raman and XRF. The XRD patterns revealed that the crystallization started between 3 and 3.5 h and ended by 5 h. The SEM images showed that the intermediate species of zeolite X appear on the surface of particles. The FT-IR and UV-Raman spectra suggested the presence of double six-membered rings (D6R) in the framework of zeolite X and they played a critical role in the crystallization process. Furthermore, the UV-Raman spectra indicated that the secondary building units of β cages formed the intermediate species and they were interconnected via double six-membered rings to form the framework of zeolite X.

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