Michael P. Herring and Lavrent Khachatryan and Barry Dellinger
Speciation of Iron (III) Oxide Nanoparticles and Other Paramagnetic Intermediates during HighTemperature Oxidative Pyrolysis of 1Methylnaphthalene
870 - 878
2015
9
7
International Journal of Chemical and Molecular Engineering
https://publications.waset.org/pdf/10002233
https://publications.waset.org/vol/103
World Academy of Science, Engineering and Technology
Low Temperature Matrix Isolation Electron
Paramagnetic Resonance (LTMIEPR) Spectroscopy was utilized to
identify the species of iron oxide nanoparticles generated during the
oxidative pyrolysis of 1methylnaphthalene (1MN). The otherwise
gasphase reactions of 1MN were impacted by a polypropylenimine
tetrahexacontaamine dendrimer complexed with iron (III) nitrate
nonahydrate diluted in air under atmospheric conditions. The EPR
fine structure of Fe (III)2O3 nanoparticles clusters, characterized by gfactors
of 2.00, 2.28, 3.76 and 4.37 were detected on a cold finger
maintained at 77 K after accumulation over a multitude of
experiments. Additionally, a high valence Fe (IV) paramagnetic
intermediate and superoxide anionradicals, O2• adsorbed on
nanoparticle surfaces in the form of Fe (IV) O2• were detected
from the quenching area of Zone 1 in the gasphase.
Open Science Index 103, 2015