Cu-ZSM-5: A biomimetic inorganic model for methane oxidation

Abstract

The present work highlights recent advances in elucidating the methane oxidation mechanism of inorganic Cu-ZSM-5 biomimic and in identifying the reactive intermediates that are involved. Such molecular understanding is important in view of upgrading abundantly available methane, but also to comprehend the working mechanism of genuine Cu-containing oxidation enzymes.

Determination of the electronic and geometric structure of Cu sites during methane conversion over Cu-MOR with X-ray absorption spectroscopy

“…A recent publication from the same group highlights the advances on this system [28]. Performing structure-performance studies on Cu-MOR that likewise converts methane to methanol allows us to explore the generality of the proposed findings.…”

Transition Metal Complexes and the Activation of Dioxygen

“…In view of their novel structures and proposed reactivity, these species are prime targets for synthetic modeling studies. Another noteworthy target is the (μ-oxo)-dicopper(II) unit, which has been proposed recently on the basis of spectroscopy and theory to be the active oxidant in Cu-doped zeolite catalysts that perform the same reaction as pMMO [336,337]. Many studies of synthetic dicopper-oxygen intermediates have aimed to address the aforementioned issues (as well as others), and these have been summarized in extensive reviews, to which readers interested in work appearing prior to early 2012 are pointed [261][262][263][264][265][266][338][339][340][341].…”

Direct Methylation of Benzene with Methane Catalyzed by Co/MFI Zeolite

“…(2)), was found to proceed on H‐ and Na‐MFI and its ion exchanged formed with Co, Mn and Cu salts;32,33 the valence of transition elements has not been mentioned in the papers. Also for the partial oxidation of methane into methanol, zeolite‐supported transition metal species were reported to show the catalytic activity 34, 35, 36, 37, 38. It has been known that zeolite (mainly MFI)‐supported metal species are active also for combustion of methane,39 reduction of NO x with methane,40 aromatization of methane14 and the activation of methane at low temperature 41.…”