Rapid crystallization and morphological adjustment of zeolite ZSM-5 in nonionic emulsions

Journal Article · Fri Jan 14 23:00:00 EST 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.10.012· OSTI ID:21494168

Chao, Jin ^[1]

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1. Department of Materials Science and Engineering, China University of Petroleum, 18 Fuxue Road, Changping District, Beijing 102249 (China)

Zeolite ZSM-5 was synthesized for the first time in a nonionic emulsion composed of polyoxyethylated alkylphenol, butanol, cyclohexane and tetraethylammonium hydroxide (TEAOH)-containing zeolite synthesis mixture. The crystallization kinetics in the emulsion was investigated and the ZSM-5 product was characterized in detail by XRD, SEM, FT-IR, TG, N{sub 2} adsorption and CHN analysis techniques. Compared with the conventionally hydrothermal synthesis with the same structure directing agent TEAOH, the emulsion system allows rapid crystallization of ZSM-5. The ZSM-5 product exhibits unusual agglomerated structure and possesses larger specific surface area. The FT-IR, TG results plus CHN analysis show the encapsulation of a trace of emulsion components in the emulsion ZSM-5. Control experiments show the emulsion system exerts the crystallization induction and morphological adjustment effects mainly during the aging period. The effects are tentatively attributed to the confined space domains, surfactant-water interaction as well as surfactant-growing crystals interaction existing in the emulsion. -- Graphical abstract: The nonionic emulsion synthesis allows rapid crystallization and morphological adjustment of zeolite ZSM-5 compared with the conventional hydrothermal synthesis. Display Omitted

• OSTI ID: 21494168
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 184; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ADSORPTION
ALKANES
COHERENT SCATTERING
COLLOIDS
CRYSTALLIZATION
CYCLOALKANES
CYCLOHEXANE
DIFFRACTION
DISPERSIONS
ELECTRON MICROSCOPY
EMULSIONS
ENCAPSULATION
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROTHERMAL SYNTHESIS
HYDROXIDES
INFRARED SPECTRA
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MATERIALS
MICROSCOPY
MINERALS
MORPHOLOGY
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SCANNING ELECTRON MICROSCOPY
SCATTERING
SILICATE MINERALS
SORPTION
SPECIFIC SURFACE AREA
SPECTRA
SYNTHESIS
X-RAY DIFFRACTION
ZEOLITES