The Influence of Reactants and Al/Ga/Si Ratios on the Synthesis of CGS Structured Zeolites

Strohmaier, K; Vaughan, D; Zhang, B

doi:10.1016/j.micromeso.2007.02.038

Title: The Influence of Reactants and Al/Ga/Si Ratios on the Synthesis of CGS Structured Zeolites

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Abstract

ECR-9 (CGS) zeolites have been synthesized from gallosilicate and gallo-aluminosilicate gels at between 100 {sup o}C and 220 {sup o}C using several Al and Si reactant types. Aluminum was substituted for gallium in the framework at levels up to 20% in seeded syntheses, but higher Al substitutions promote the crystallization of impurities. This is the first report of a gallo-aluminosilicate CGS composition. We successfully used the Simulated Framework Annealing method to solve the structural topology as if ECR-9 was a novel gallosilicate. The structure was refined using Rietveld full profile analysis (wRp = 14.6%) of powder synchrotron X-ray diffraction data.

Authors:: Strohmaier, K; Vaughan, D; Zhang, B

Publication Date:: Mon Jan 01 00:00:00 EST 2007

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source

Sponsoring Org.:: Doe - Office Of Science

OSTI Identifier:: 930019

Report Number(s):: BNL-80633-2008-JA
TRN: US0806685

DOE Contract Number:: DE-AC02-98CH10886

Resource Type:: Journal Article

Journal Name:: Microporous and Mesoporous Materials

Additional Journal Information:: Journal Volume: 104; Journal Issue: 39450

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; ALUMINIUM; ANNEALING; CRYSTALLIZATION; DATA; GALLIUM; GELS; IMPURITIES; POWDERS; SYNCHROTRON RADIATION; SYNTHESIS; TOPOLOGY; X-RAY DIFFRACTION; ZEOLITES; national synchrotron light source

Citation Formats


                    Strohmaier, K, Vaughan, D, and Zhang, B. The Influence of Reactants and Al/Ga/Si Ratios on the Synthesis of CGS Structured Zeolites.  United States: N. p., 2007. 
        Web.  doi:10.1016/j.micromeso.2007.02.038.

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                    Strohmaier, K, Vaughan, D, & Zhang, B. The Influence of Reactants and Al/Ga/Si Ratios on the Synthesis of CGS Structured Zeolites.  United States.  https://doi.org/10.1016/j.micromeso.2007.02.038

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                    Strohmaier, K, Vaughan, D, and Zhang, B. 2007.  
        "The Influence of Reactants and Al/Ga/Si Ratios on the Synthesis of CGS Structured Zeolites".  United States.  https://doi.org/10.1016/j.micromeso.2007.02.038.

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@article{osti_930019,

  title        = {The Influence of Reactants and Al/Ga/Si Ratios on the Synthesis of CGS Structured Zeolites},

  author       = {Strohmaier, K and Vaughan, D and Zhang, B},

  abstractNote = {ECR-9 (CGS) zeolites have been synthesized from gallosilicate and gallo-aluminosilicate gels at between 100 {sup o}C and 220 {sup o}C using several Al and Si reactant types. Aluminum was substituted for gallium in the framework at levels up to 20% in seeded syntheses, but higher Al substitutions promote the crystallization of impurities. This is the first report of a gallo-aluminosilicate CGS composition. We successfully used the Simulated Framework Annealing method to solve the structural topology as if ECR-9 was a novel gallosilicate. The structure was refined using Rietveld full profile analysis (wRp = 14.6%) of powder synchrotron X-ray diffraction data.},

  doi          = {10.1016/j.micromeso.2007.02.038},

  url          = {https://www.osti.gov/biblio/930019},
  journal      = {Microporous and Mesoporous Materials},
number       = 39450,

  volume       = 104,

  place        = {United States},

  year         = {Mon Jan 01 00:00:00 EST 2007},

  month        = {Mon Jan 01 00:00:00 EST 2007}

}

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