Please use this identifier to cite or link to this item: http://hdl.handle.net/11452/25427
Title: The effect of sample age and neutron radiation to dynamic nuclear polarization parameters in some asphaltene suspensions
Authors: Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Anabilim Dalı.
Ovalıoǧlu, Hüseyin
24460278400
Keywords: Chemistry
Asphaltene
DNP
Double resonance
Intermolecular spin-spin interaction
Highly fluorinated solutions
Low magnetic-fields
Resonance
Oximetry
Xylene
Asphaltenes
Electrons
Experiments
Hydrogen
Isomers
Magnetic fields
Radiation effects
Spin dynamics
Spin polarization
Xylene
DNP
Double resonance
Dynamic nuclear polarization
Free electron
Intermolecular spin-spin interaction
Low magnetic fields
Neutron radiation effects
Neutron radiations
Nuclear spins
Overhauser effect
Room temperature
Xylene isomers
Neutron irradiation
Issue Date: 2011
Publisher: Taylor & Francis
Citation: Ovalıoǧlu, H. vd.(2011). "The effect of sample age and neutron radiation to dynamic nuclear polarization parameters in some asphaltene suspensions". Journal of Dispersion Science and Technology, 32(10), 1470-1476.
Abstract: Nuclear magnetic resonance and the Overhauser effect type dynamic nuclear polarization experiments were performed to study suspensions of asphaltene in the xylene isomers at a low magnetic field of 1.44mT at room temperature. Intermolecular spin-spin interactions occur between nuclear spins of hydrogen in the solvent medium and the free electron spins in the asphaltene micelles. The samples were prepared in three different asphaltene concentrations at vacuum. The samples were waited for four years and dynamic nuclear polarization parameters were found via dynamic nuclear polarization experiments performed again. Thus, it was investigated the effect of sample age to dynamic nuclear polarization parameters. In addition, the medium concentrations of each sample were exposed to radiation for 48 hours and neutron radiation effects to the dynamic nuclear polarization parameters were investigated. The results are discussed.
URI: https://doi.org/10.1080/01932691.2010.513315
https://www.tandfonline.com/doi/full/10.1080/01932691.2010.513315
http://hdl.handle.net/11452/25427
ISSN: 0193-2691
Appears in Collections:Scopus
Web of Science

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