Selective oxidation of methane by the bis(mu-oxo)dicopper core stabilized on ZSM-5 and mordenite zeolites.
This work reports on the capability of the O2-activated Cu-ZSM-5 and Cu-MOR zeolites to selectively convert methane into methanol at a temperature of 398 K. A strong correlation between (i) the activity and (ii) the intensity of the 22 700 cm-1 UV-vis band, assigned to the bis(mu-oxo)dicopper core, is found (i) as a function of the reaction temperature, (ii) as a function of the Cu loading of the zeolite, and (iii) in comparison to other Cu materials. These three lines of evidence firmly support the key role of the bis(mu-oxo)dicopper core in this selective, low-temperature hydroxylation of methane.
Groothaert
Marijke H
MH
Center for Surface Chemistry and Catalysis, K. U. Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium. marijke.groothaert@agr.kuleuven.ac.be
Smeets
Pieter J
PJ
Sels
Bert F
BF
Jacobs
Pierre A
PA
Schoonheydt
Robert A
RA
D000538:Aluminum Silicates / Q000737:chemistry*; D040761:Biomimetic Materials / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D007700:Kinetics; D008697:Methane / Q000737:chemistry*; D014442:Monophenol Monooxygenase / Q000737:chemistry; D009942:Organometallic Compounds; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D010105:Oxygenases / Q000737:chemistry; D015125:Oxyquinoline / Q000031:analogs & derivatives*; D017641:Zeolites / Q000737:chemistry*
D000538:Aluminum Silicates; D009942:Organometallic Compounds; C047488:bis(8-quinolinolato)copper(II); C048397:mordenite; D017641:Zeolites; D015125:Oxyquinoline; D003300:Copper; D010105:Oxygenases; C021555:methane monooxygenase; D014442:Monophenol Monooxygenase; D008697:Methane; D010100:Oxygen