The
development of an effective approach for methane utilization,
especially methane conversion to methanol, is a crucial challenge
that has remained unsolved satisfactorily. Herein, we propose an alternative
concept of methane utilization to methanol over Fe-ZSM-5@ZIF-8. The
concept is to use the designed composite as a dual catalyst in which
ZIF-8 and Fe-ZSM-5 act simultaneously as a gas adsorbent and catalyst,
respectively. In this case, methane can be adsorbed on ZIF-8 at 50
°C and subsequently converted to methanol at a moderate temperature
(150 °C) on Fe-ZSM-5. Interestingly, the promising catalytic
performance is observed on Fe-ZSM-5@ZIF-8, whereas only trace amounts
of produced methanol are detected on isolated Fe-ZSM-5 and ZIF-8.
Moreover, the designed composite also facilitates a facile methanol
desorption at the hydrophobic surface of the composite. This first
example opens up new promising horizons in combined perspectives for
gas storage and catalytic process applications.
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