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Chem Phys. 2013 Aug 30;422:277-282. doi: 10.1016/j.chemphys.2012.12.003.

EPFR Formation from Phenol adsorption on Al2O.

Chemical physics

Matthew C Patterson, Nathan D Keilbart, Lucy W Kiruri, Chad A Thibodeaux, Slawo Lomnicki, Richard L Kurtz, E D Poliakoff, Barry Dellinger, Phillip T Sprunger

Affiliations

  1. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
  2. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA ; Department of Mechanical Engineering, Brigham Young University-Idaho, Rexburg, ID 83460, USA.
  3. Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA.

PMID: 24443627 PMCID: PMC3891583 DOI: 10.1016/j.chemphys.2012.12.003

Abstract

We have examined the formation of environmentally persistent free radicals (EPFRs) from phenol over alumina and titania using both powder and single-crystal samples. Electron paramagnetic resonance (EPR) studies of phenol adsorbed on metal oxide powders indicates radical formation on both titania and alumina, with both oxides forming one faster-decaying species (lifetime on the order of 50-100 hours) and one slower-decayng species (lifetimes on the order of 1000 hours or more). Electron energy loss spectroscopy (EELS) measurements comparing physisorbed phenol on single-crystal TiO

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