Database of Zeolite Structures
 
Framework Type MWW
29Si MAS NMR spectrum of calcined pure silica ITQ-1 (MCM-22)


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)
-120.39
3.000
1.04
0.663
B
Q4(0Al)
-116.58
3.000
1.01
0.663
C
Q4(0Al)
-114.00
3.000
0.87
0.663
D
Q4(0Al)
-112.86
1.000
0.95
0.663
F
Q4(0Al)
-112.66
1.000
0.95
0.663
G
Q4(0Al)
-111.69
3.000
0.95
0.663
E
Q4(0Al)
-111.12
1.000
0.62
0.663
H
Q4(0Al)
-106.02
3.000
0.91
0.663


References
Spectrum

  Authors: Camblor, M.A., Corma, A., Díaz-Cabañas, M.-J. and Baerlocher, Ch.
  Title: Synthesis and structural characterization of MWW type zeolite ITQ-1, the pure silica analog of MCM-22 and SSZ-25
  Reference: J. Phys. Chem. B, 102, 44-51 (1998)
  Figure: Figure 9a  

Crystal Structure

  Authors: Camblor, M.A., Corma, A., Díaz-Cabañas, M.-J. and Baerlocher, Ch.
  Title: Synthesis and structural characterization of MWW type zeolite ITQ-1, the pure silica analog of MCM-22 and SSZ-25
  Reference: J. Phys. Chem. B, 102, 44-51 (1998)

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. 79.459 MHz (Field = 9.4 Tesla)
  Pulse sequence single pulse
  MAS frequency 5.5 kHz
  Spectrum Digitized and processed by Brouwer Lab, Redeemer University
  Data processing Spectrum digitized with WebPlotDigitizer and deconvoluted with Mathematica notebook
 

Chemical Formula

  [Si72O144]-MWW

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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