Model for the structure of the large-pore zeolite SSZ-31

Journal Article · Wed Apr 23 00:00:00 EDT 1997 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja963925g· OSTI ID:512905

Lobo, R F ^[1]; Tsapatsis, M ^[2]; Freyhardt, C C; Davis, M E ^[3]; Chan, I; Chen, C Y; Zones, S I ^[4]

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1. Univ. of Delaware, Newark, DE (United States)
2. Univ. of Massachusetts, Amherst, MA (United States)
3. California Inst. of Technology, Pasadena, CA (United States)
4. Chevron Research and Technology Co., Richmond, CA (United States)

A model for the structure of the zeolite SSZ-31 is presented. The model is obtained by combining information from adsorption capacity measurements, transmission electron microscopy, and high-resolution X-ray diffraction. SSZ-31 is a one-dimensional large-pore zeolite with a framework density of 18.7 tetrahedral(T)-atoms per nm{sup -3} and a bulk density of 1.87 g cm{sup -3}. The pore apertures are elliptical with major and minor axes of approximately 8.6 {angstrom} x 5.7 {angstrom}. SSZ-31 is an extreme example of a complex and highly faulted zeolite. The structure can be described as an intergrowth of four different but structurally related polymorphs. 26 refs., 11 figs., 4 tabs.

• OSTI ID: 512905
• Journal Information: Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 16 Vol. 119; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ADSORPTION
CRYSTAL STRUCTURE
MICROSTRUCTURE
NUMERICAL DATA
POROUS MATERIALS
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ZEOLITES