Database of Zeolite Structures
 
Framework Type MTW
29Si MAS NMR spectrum of calcined dealuminated ZSM-12


Note: Toggle plots by clicking on the legend

Peak
T site
Q-type
Chemical Shift
Relative
Peak Width
Peak Shape
Assigment
(topological)
(ppm)
Peak Area
(ppm)
(x)L (1-x)G
Si2
T2
Q4(0Al)
-112.48
1.000
0.21
0.746
Si5
T5
Q4(0Al)
-112.09
1.000
0.22
0.746
Si7
T7
Q4(0Al)
-111.15
1.000
0.23
0.746
Si2
T2
Q4(0Al)
-110.67
1.000
0.22
0.746
Si6
T6
Q4(0Al)
-108.85
1.000
0.20
0.746
Si4
T4
Q4(0Al)
-108.34
1.000
0.22
0.746
Si3
T3
Q4(0Al)
-107.64
1.000
0.26
0.746


References
Spectrum

  Authors: Fyfe, C.A., Strobl, H., Kokotailo, G.T., Pasztor, C.T., Barlow, G.E., Bradley, S.
  Title: Correlations between lattice structures of zeolites and their 29Si MAS n.m.r. spectra: zeolites KZ-2, ZSM-12, and Beta
  Reference: Zeolites, 8, 132-136 (1988)
  Figure: Figure 1a  

Peak Assignment

  Authors: Fyfe, C.A., Feng, Y., Gies, H., Grondey, H., Kokotailo, G.T.
  Title: Natural-Abundance Two-Dimensional Solid-State 29Si NMR Investigations of Three-Dimensional Lattice Connectivities in Zeolite Structures
  Reference: J. Am. Chem. Soc., 112, 3264-3270 (1990)
  Method: 2D correlation NMR
  Figure: Figure 7a  

Crystal Structure

  Authors: Fyfe, C.A., Gies, H., Kokotailo, G.T., Marler, B. and Cox, D.E.
  Title: Crystal structure of silica-ZSM-12 by the combined use of high-resolution solid-state MAS NMR spectroscopy and synchrotron x-ray powder diffraction
  Reference: J. Phys. Chem., 94, 3718-3721 (1990)

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

Chemical Formula

  [Si - O]-MTW

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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