Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Jeremiah M. Purcell"'
Publikováno v:
Energy & Fuels. 24:2929-2938
Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) allows detailed characterization of complex petroleum samples at the level of elemental composition assignment. Ultrahigh-resolution (450 000−650 000 at m/z 500) enables identi
Autor:
Juliana D'Andrilli, Jeremiah M. Purcell, Thorsten Dittmar, Boris P. Koch, William T. Cooper, Alan G. Marshall
Publikováno v:
Rapid Communications in Mass Spectrometry. 24:643-650
We compare the ultrahigh resolution 9.4 T Fourier transform ion cyclotron resonance (FT-ICR) mass spectra of marine dissolved organic matter (DOM) isolated from two sites in the Weddell Sea (Antarctica) obtained by complementary electrospray ionizati
Autor:
Ryan P. Rodgers, Jeremiah M. Purcell, Isabelle Merdrignac, Alan G. Marshall, Isabelle Guibard, Thierry Gauthier
Publikováno v:
Energy & Fuels. 24:2257-2265
The compositional analysis (speciation) of heavy oil products is a key step to improve our understanding of hydrotreatment processes and reaction mechanisms. Thus, detailed characterization of polar fractions, such as asphaltenes, should be considere
Autor:
Alan G. Marshall, Christopher L. Hendrickson, Miriam K. Drayss, Dirk Blunk, Jeremiah M. Purcell, Abhigya Mookherjee, Mathias Schäfer, P. B. Armentrout
Publikováno v:
The Journal of Physical Chemistry A. 113:7779-7783
Dissociation kinetics of the K(+) loss reaction of three potassiated tertiary amino acids (Scheme 1) were studied by infrared multiple photon dissociation (IRMPD) in a Fourier transform ion cyclotron resonance (FT ICR)-MS instrument. The aim of the s
Publikováno v:
Energy & Fuels. 23:2122-2128
Vanadyl porphyrins are detected and characterized by their double-bond equivalents (DBE = number of rings plus double bonds) and carbon number in an unfractionated (raw) asphaltene and unaltered South American crude oil. Atmospheric pressure photoion
Autor:
Alan G. Marshall, Patrick G. Hatcher, Jeremiah M. Purcell, William C. Hockaday, Jeffery A. Baldock
Publikováno v:
Limnology and Oceanography: Methods. 7:81-95
Fourier-transform ion cyclotron resonance mass spectrometry (MS) has demonstrated potential to revolutionize the fields of limnology and chemical oceanography by identifying the individual molecular components of organic matter in natural waters. The
Autor:
Alan G. Marshall, Diane Bustamante, Oliver C. Mullins, G. Todd Ventura, Andrew E. Pomerantz, Christopher M. Reddy, Robert K. Nelson, Jeremiah M. Purcell, Soraya S. Betancourt, Gene Monson, Julian Zuo, Francois Xavier Dubost, Oswaldo Viloria, Ryan P. Rodgers
Publikováno v:
Energy & Fuels. 23:1178-1188
Recently, asphaltenes have been shown to form nanoaggregates in toluene at very low concentrations (10−4 mass fraction). Subsequently, in situ analysis of a 3000 ft vertical column of crude oil by downhole fluid analysis (DFA) indicated that the as
Autor:
Thomas Wågberg, Mattias Hedenström, Alexandr V. Talyzin, Ingmar Sethson, Yury O. Tsybin, Jeremiah M. Purcell, Alan G. Marshall, Dag Noréus, Dan Johnels
Publikováno v:
Angewandte Chemie. 120:2838-2841
Autor:
Ryan P. Rodgers, Priyanka Juyal, and Christopher L. Hendrickson, † Do-Gyun Kim, Alan G. Marshall, Jeremiah M. Purcell
Publikováno v:
Energy & Fuels. 21:2869-2874
Molecular characterization of sulfur-containing species in petroleum is important because sulfur-containing compounds are detrimental to the environment and the refining processes. In a recent report, the sulfur-containing compounds in a vacuum botto
Autor:
Yury M. Shulga, Catherine McCammon, Alexandr V. Talyzin, Yury O. Tsybin, Bertil Sundqvist, Jeremiah M. Purcell, Andrzej Dzwilewski, Leonid Dubrovinsky, Alan G. Marshall
Publikováno v:
Chemical Physics. 325:445-451
Hydrogenation of C60 at 2 GPa and 723–823 K was performed with thermal decomposition of LiAlH4 as a hydrogen source. Analysisof hydrogenation products showed that the method can produce not only C60H36, but also hydrofullerides C60Hx with 44 < x <