fig8
Figure 8. (A) Conceptual diagram of the preparation of Pd/PMA-H and its conversion of methane to methanol under oxygen conditions. The reaction intermediates (B) and the reaction profiles for both the enthalpy (H) and the Gibbs free energy (G) (C). The reaction proceeds initially via H2 activation and diffusion (intermediates I-IV), followed by vacancy formation and O2 adsorption (intermediates V-VII), then methane activation (intermediates VIII and IX) and methanol formation (intermediate X). Atom color code: Mo: yellow; Pd: purple; O: red; C: dark grey; H: light grey. TS: transition state[111]. Copyright 2023, Springer Nature.
