Database of Zeolite Structures
 
Framework Type MTT
29Si MAS NMR spectrum of calcined dealuminated ZSM-23


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
Si5
T7
Q4(0Al)
-114.43
1.000
0.39
1.000
Si1
T1
Q4(0Al)
-114.13
1.000
0.33
1.000
Si8
T1
Q4(0Al)
-114.13
1.000
0.33
1.000
Si6
T4
Q4(0Al)
-112.86
1.000
0.44
1.000
Si11
T4
Q4(0Al)
-112.10
1.000
0.33
1.000
Si3
T3
Q4(0Al)
-112.02
1.000
0.33
1.000
Si9
T2
Q4(0Al)
-111.74
1.000
0.35
1.000
Si10
T3
Q4(0Al)
-111.48
1.000
0.36
1.000
Si4
T6
Q4(0Al)
-110.51
1.000
0.28
1.000
Si2
T2
Q4(0Al)
-110.38
1.000
0.28
1.000
Si7
T5
Q4(0Al)
-109.96
1.000
0.34
1.000
Si12
T5
Q4(0Al)
-108.59
1.000
0.40
1.000


References
Spectrum

  Authors: Fyfe, C.A., Grondey, H., Feng, Y., Kokotailo, G.T., Ernst, S., Weitkamp, J.
  Title: Two-dimensional solid-state 29Si n.m.r. investigation of the three-dimensional bonding connectivities and structure of zeolite ZSM-23
  Reference: Zeolites, 12, 50-53 (1992)
  Figure: Figure 3a  

Peak Assignment

  Authors: Hochgräfe, M., Gies, H., Fyfe, C.A., Feng, Y., Grondey, H.
  Title: Lattice energy-minimization calculation in the further investigation of XRD and NMR studies of zeolite frameworks
  Reference: Chem. Mater., 12, 336-342 (2000)
  Method: 2D correlation NMR, average Si-Si distances
  Figure: Table 2  

Crystal Structure

  Authors: Marler, B., Deroche, C., Gies, H., Fyfe, C.A., Grondey, H., Kokotailo, G.T., Feng, Y., Ernst, S., Weitkamp, J. and Cox, D.E.
  Title: The Structure of Zeolite ZSM-23 (MTT) Refined from Synchrotron X-Ray Powder Data
  Reference: J. Appl. Crystallogr., 26, 636-644 (1993)

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
  MAS frequency 3.5 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]-MTT

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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