fig4

Figure 4. (A) XRD pattern, (B) 27Al MAS NMR spectra, (C) pore size distribution of HY zeolites. XRD: X-ray diffraction; MAS NMR: magic angle spinning nuclear magnetic resonance.
Figure 4. (A) XRD pattern, (B) 27Al MAS NMR spectra, (C) pore size distribution of HY zeolites. XRD: X-ray diffraction; MAS NMR: magic angle spinning nuclear magnetic resonance.
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