29Si MAS QCPMG data of zeolite LZY64
Experiment performed with 4-mm diameter rotor spinning at 10 kHz.
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.
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):
T2 echo value of Si(2Al, 2Si):
T2 echo value of Si(1Al, 3Si):
T2 echo value of Si(0Al, 4Si):
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):
T1 value of Si(2Al, 2Si):
T1 value of Si(1Al, 3Si):
T1 value of Si(0Al, 4Si):
