Zobrazeno 1 - 10
of 34
pro vyhledávání: '"J. D. Payzant"'
Autor:
J. D. Payzant, Otto P. Strausz, Najam Kazmi, Angelina Morales-Izquierdo, E. M. Lown, Douglas S. Montgomery, Juan Murgich
Publikováno v:
Energy & Fuels. 25:4552-4579
The volatile aromatic fraction (240 °C and 10–3 Torr pressure) of Athabasca bitumen was separated via thin-layer chromatography (TLC) (Ag+/SiO2), followed by alumina column chromatography, into 13 ...
Autor:
Douglas S. Montgomery, Otto P. Strausz, I. Safarik, Najam Kazmi, Juan Murgich, J. D. Payzant, Angelina Morales-Izquierdo
Publikováno v:
Energy & Fuels. 24:5053-5072
Presented is an account of the bulk and molecular composition of the saturate fraction of Athabasca bitumen. It is shown that, for a clean isolation, it is necessary to subject the column-chromatography-separated crude saturates to molecular distilla
Publikováno v:
Energy & Fuels. 13:558-569
The HF.BF 3 superacid-catalyzed hydrocracking of tar sands bitumens and asphaltenes leads to deep-rooted chemical changes which affect both the aliphatic and aromatic constituents of the feedstocks even under mild experimental conditions, resulting i
Publikováno v:
Energy & Fuels. 5:445-453
A flash pyrolysis method has been employed, allowing the production of pyrolysis oil from Athabasca asphaltene on the multigram scale, for the identification of homologous series of n-alkylbenzenes, 9-n-alkylfluorenes, and 1-n-alkyldibenzothiophenes.
Publikováno v:
Geochemistry of Sulfur in Fossil Fuels ISBN: 9780841218048
Geochemistry of Sulfur in Fossil Fuels
Geochemistry of Sulfur in Fossil Fuels
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4991418939771095a76eb1d135f7504b
https://doi.org/10.1021/bk-1990-0429.ch005
https://doi.org/10.1021/bk-1990-0429.ch005
Publikováno v:
Geochemistry of Sulfur in Fossil Fuels ISBN: 9780841218048
Geochemistry of Sulfur in Fossil Fuels
Geochemistry of Sulfur in Fossil Fuels
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcfdb36738fd9b68a6997bb994db4fec
https://doi.org/10.1021/bk-1990-0429.ch022
https://doi.org/10.1021/bk-1990-0429.ch022
Autor:
M. Torres, J. D. Payzant, D. D. McIntyre, Douglas S. Montgomery, T. W. Mojelsky, Otto P. Strausz
Publikováno v:
Organic Geochemistry. 14:461-473
Several homologous series of monocyclic thiolanes and thianes possessing a linear carbon framework have been identified in a variety of petroleums. Of the 20 petroleums examined, none of the five biodegraded petroleums contained significant amounts o
Publikováno v:
The Journal of Physical Chemistry. 80:2919-2922
Rate constants for proton-transfer reactions of the type XH/sup +/ + HCN(CH/sub 3/CN) ..-->.. H/sub 2/CN/sup +/(CH/sub 3/CNH/sup +/) + X where X = H/sub 2/, N/sub 2/, CO, H/sub 2/O, and CO/sub 2/ and of the type HCN(CH/sub 3/CN) + X/sup -/ ..-->.. CN
Publikováno v:
Tetrahedron Letters. 26:4175-4178
The synthesis of the title compound is described. Comparison of ms and nmr data with those of the isomeric bicyclic terpenoid sulfide of petroleum shows that the latter has the structure of 1α(H), 6β(H)-2,2-dimethyl-9-ethylbicyclo-[4,4,0]-8-thiadec
Publikováno v:
Energy & Fuels. 3:449-454
These methods are based on the ability to selectively oxidize the sulfur atom in the two different chemical environments and the large difference in polarity between the oxidized and unoxidized forms. The reagent tetrabutylammonium periodate in tolue