Characterization of 15NH3 adsorption behaviors on H-ZSM-5 by SSNMR. (IMAGE)

The Hong Kong Polytechnic University

Characterization of 15NH3 adsorption behaviors on H-ZSM-5 by SSNMR.

Caption

(A) 1H, (B) 15N, and (C) two-dimensional 15N-1H HETCOR MAS SSNMR spectra of 15NH3 adsorbed on H-ZSM-5. 15N-27Al S-RESPDOR built-up data and simulated curves by plotting the signal fraction ∆S/S0 = (S0 − S′)/S0 (S0 and S′ represent the signal intensity with and without dipolar dephasing, respectively) as a function of the recoupling time τ, for 15N chemical shift at (D) −358.8 ppm, (E) −372.7 ppm, and (F) −365.0 ppm. d1 represents the internuclear distance of the 15N-27Al spin pair.

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© 2025 Research and Innovation Office, The Hong Kong Polytechnic University. All Rights Reserved.

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