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Zeolite LZY64




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29Si MAS QCPMG data of zeolite LZY64

Experiment performed with 4-mm diameter rotor spinning at 10 kHz.

Silicon-29 QCPMG echo train of LZY64 zeolite

29Si MAS QCPMG echo train of LZY64


Acquisition parameters:

General  
PULPROG qcpmg.fau
TD 13468
NS 420
DS 0
SWH [Hz] 20000.00
AQ [s] 0.3367500
RG 128
DW [µs] 25.000
DE [µs] 6.50
const1 13466.829102
CONST11 0.0000000
D1 [s] 120.00000000
D3 [s] 0.00005000
D6 [s] 0.00400000
L22 41
P25 [µs] 0.00
rest [s] 0.00007927
Channel f1  
NUC1 29Si
P3 [µs] 6.35
P4 [µs] 12.70
PL1 [dB] 120
PL1W [W] 0.00000000
PL21 [dB] 6.00
PL21W [W] 130.48197937
PL22 [dB] 6.00
PL22W [W] 130.48197937
SFO1 [MHz] 99.3681135

29Si MAS spectra of zeolite LZY64

Experiment performed with 4-mm diameter rotor spinning at 10 kHz.

Silicon-29 spectra of LZY64 zeolite

29Si MAS spectra of LZY64: (red spectrum) MAS spectrum from Fourier transform of an FID; (blue spectrum) MAS spectrum from Fourier transform of an FID and 20 echoes. The relative amplitudes of the peaks are different due to T2 echo values.


29Si MAS T2 echo values of zeolite LZY64

T2 echo value of Si(3Al, 1Si):

Silicon-29 T2 echo value of Si(3Al, 1Si) in LZY64 zeolite

T2 echo value of Si(2Al, 2Si):

Silicon-29 T2 echo value of Si(2Al, 2Si) in LZY64 zeolite

T2 echo value of Si(1Al, 3Si):

Silicon-29 T2 echo value of Si(1Al, 3Si) in LZY64 zeolite

T2 echo value of Si(0Al, 4Si):

Silicon-29 T2 echo value of Si(0Al, 4Si) in LZY64 zeolite

The T2 echo value of 29Si in zeolite LZY64 decreases when the number of first neighbor aluminum atoms increases.

29Si MAS T1 values of zeolite LZY64

Inversion-recovery T1 experiment performed with 7-mm diameter rotor spinning at 5 kHz; NS = 40 and D1 = 180 s; SFO1 = 99.369 MHz.

T1 value of Si(3Al, 1Si):

Silicon-29 T1 value of Si(3Al, 1Si) in LZY64 zeolite

T1 value of Si(2Al, 2Si):

Silicon-29 T1 value of Si(2Al, 2Si) in LZY64 zeolite

T1 value of Si(1Al, 3Si):

Silicon-29 T1 value of Si(1Al, 3Si) in LZY64 zeolite

T1 value of Si(0Al, 4Si):

Silicon-29 T1 value of Si(0Al, 4Si) in LZY64 zeolite
 
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