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O. Gamba Vasquez, J. Hulva, J. Pavelec, R. Bliem, M. Schmid, U. Diebold, G. Parkinson:
"The role of surface defects in the adsorption of methanol on Fe₃O₄(001)";
Topics in Catalysis, 60 (2017), 420 - 430.

The adsorption of methanol (CH3OH) at the
Fe3O4(001)-(H2 9 H2)R45 surface was studied using
X-ray photoelectron spectroscopy, scanning tunneling
microscopy, and temperature-programmed desorption
(TPD). CH3OH adsorbs exclusively at surface defect sites
at room temperature to form hydroxyl groups and methoxy
(CH3O) species. Active sites are identified as step edges,
iron adatoms, antiphase domain boundaries in the
(H2 9 H2)R45 reconstruction, and above Fe atoms
incorporated in the subsurface. In TPD, recombinative
desorption is observed around 300 K, and a disproportionation
reaction to form methanol and formaldehyde
occurs at 470 K.

Oxide surfaces Surface defects Methanol Magnetite Surface chemistry