Database of Zeolite Structures
 
Framework Type MEL
29Si MAS NMR spectrum of calcined dealuminated ZSM-11 at 302K


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
Si3
T1
Q4(0Al)
-116.70
1.000
0.15
1.000
Si7
T3
Q4(0Al)
-116.55
1.000
0.15
1.000
Si2
T1
Q4(0Al)
-115.57
1.000
0.21
1.000
Si6
T3
Q4(0Al)
-114.54
1.000
0.21
1.000
Si9
T4
Q4(0Al)
-114.36
1.000
0.16
1.000
Si10
T7
Q4(0Al)
-113.97
1.000
0.13
1.000
Si8
T4
Q4(0Al)
-112.51
1.000
0.19
1.000
Si4
T2
Q4(0Al)
-111.96
1.000
0.18
1.000
Si12
T5
Q4(0Al)
-111.85
1.000
0.18
1.000
Si5
T2
Q4(0Al)
-111.65
1.000
0.13
1.000
Si1
T6
Q4(0Al)
-111.48
1.000
0.09
1.000
Si11
T5
Q4(0Al)
-111.03
1.000
0.21
1.000


References
Spectrum

  Authors: Fyfe, C.A., Feng, Y., Grondey, H., Kokotailo, C.T., Mar, A.
  Title: Natural Abundance, Two-Dimensional 29Si MAS NMR Investigation of the Three-Dimensional Bonding Connectivities in the High- and Low-Temperature Forms of Zeolite ZSM-11
  Reference: J. Phys. Chem, 95, 3747-3751 (1991)
  Figure: Figure 3a  

Peak Assignment

  Authors: Fyfe, C.A., Feng, Y., Grondey, H., Kokotailo, C.T., Mar, A.
  Title: Natural Abundance, Two-Dimensional 29Si MAS NMR Investigation of the Three-Dimensional Bonding Connectivities in the High- and Low-Temperature Forms of Zeolite ZSM-11
  Reference: J. Phys. Chem, 95, 3747-3751 (1991)
  Method: 2D correlation NMR, average Si-Si distances
  Figure: Figure 5  

Crystal Structure

  Authors: Hochgräfe, M., Marler, B., Gies, H., Fyfe, C.A., Feng, Y., Grondey, H., Kokotailo, G.T.
  Title: The structure of the low temperature (20 K) form of zeolite ZSM-11 derived from 29Si MAS NMR spectroscopy, lattice energy minimization and Rietveld refinement
  Reference: Z. Kristallogr., 211, 221-227 (1996)

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 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]-MEL

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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