Database of Zeolite Structures
 

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Framework Type SFF
29Si MAS NMR spectrum of calcined pure silica SSZ-44


Note: Toggle plots by clicking on the legend

Peak
Q-type
Chemical Shift
Relative
Peak Width
Peak Shape
Label
(ppm)
Peak Area
(ppm)
(x)L (1-x)G
A
Q4(0Al)
-115.95
1.000
0.47
0.760
B
Q4(0Al)
-115.24
1.000
0.47
0.760
C
Q4(0Al)
-114.51
1.000
0.62
0.760
D
Q4(0Al)
-114.11
1.000
0.80
0.760
E
Q4(0Al)
-113.11
1.000
0.87
0.760
F
Q4(0Al)
-112.37
1.000
0.92
0.760
G
Q4(0Al)
-109.17
1.000
0.63
0.760
H
Q4(0Al)
-106.89
1.000
1.04
0.760


References
Spectrum

  Authors: Villaescusa, L.A., Zhou, W., Morris, R.E. and Barrett, P.A.
  Title: Synthesis, characterization and control of faulting in STF/SFF topologies, a new family of intergrowth zeolites
  Reference: J. Mater. Chem., 14, 1982-1987 (2004)
  Figure: Figure 5d  

Crystal Structure

  Authors: Wagner, P., Zones, S.I., Davis, M.E. and Medrud, R.C.
  Title: SSZ-35 and SSZ-44: Two related zeolites containing pores circumscribed by ten- and eighteen-membered rings
  Reference: Angew. Chem. Int. Ed., 38, 1269-1272 (1999)3.0.co;2-3>

Digitization and Modeling of Spectrum

  To reference this collection of solid-state NMR spectra, we suggest:
  Authors: Brouwer, D.H., Brouwer, C.C., Mesa, S., Semelhago, C.A., Steckley, E.E., Sun, M.P.Y., Mikolajewski, J.G., and Baerlocher, Ch.
  Title: Solid-state 29Si NMR spectra of pure silica zeolites for the International Zeolite Association Database of Zeolite Structures
  Reference: Microporous Mesoporous Mat., 297, 110000 (2020)
Spectrum information

  Obs. freq. 59.582 MHz (Field = 7 Tesla)
  Pulse sequence single pulse
  MAS frequency 4.3 kHz
  Spectrum Digitized and processed by Brouwer Lab, Redeemer University
  Data processing Spectrum digitized with WebPlotDigitizer and deconvoluted with Mathematica notebook
 

Chemical Formula

  [Si - O]-SFF

Downloads

  Download digitized spectrum in JCAMP-DX format
(This file includes also the data listed on this page)
  Download all lines from the above plot in .csv format
(This file contains only the plotted data)

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