Zobrazeno 1 - 10
of 279
pro vyhledávání: '"Otto P. Strausz"'
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 ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e552b143d0e2f8b57fca7bc32bf34fba
https://doi.org/10.1021/ef200833e
https://doi.org/10.1021/ef200833e
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a9c178e714b43f358bb4fc23d71685d
https://doi.org/10.1021/ef100702j
https://doi.org/10.1021/ef100702j
Publikováno v:
Energy & Fuels. 23:1555-1562
The molecular-weight (MW)-dependent fluorescence of asphaltene discovered over 20 years ago has been re-examined from a theoretical point of view. It is concluded here that the dependence is a result of the sensitivity of the jump between the non-int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::580bf43bb5cd077051411265fd26e826
https://doi.org/10.1021/ef800480y
https://doi.org/10.1021/ef800480y
Publikováno v:
Energy & Fuels. 22:1156-1166
Relying on experimental and theoretical data available from the literature, it is shown that the conclusions derived from measurements of fluorescence decay and depolarization kinetic times as reported in a series of papers over the past decade (Rals
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2b3a9c9b7a8aa498f290ae9463e5cf5
https://doi.org/10.1021/ef700320p
https://doi.org/10.1021/ef700320p
Publikováno v:
Energy & Fuels. 20:2013-2021
It is shown by sequential reprecipitation that both n-C5 and n-C7 Athabasca asphaltene contain significant amounts of precipitant solubles, comprising resins and low-molecular-weight asphaltene-like substances in about the same percentage amounts rel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b71dd68a4bbc7acf1dff8ae80df16123
https://doi.org/10.1021/ef060013j
https://doi.org/10.1021/ef060013j
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::184d48957063528cd9a8385cc999e3c6
https://doi.org/10.1021/ef980098r
https://doi.org/10.1021/ef980098r
Publikováno v:
Energy & Fuels. 13:278-286
The conformation of lowest energy of an asphaltene molecule of the Athabasca sand oil was calculated through molecular mechanics. The molecule has a complex globular shape with small internal cavities. This shape resulted mostly from the existence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c0096d48a52216b562503c72090bfc1
https://doi.org/10.1021/ef980228w
https://doi.org/10.1021/ef980228w
Autor:
Angelina Morales-Izquierdo, Jiamo Fu, Ping'an Peng, Guoying Sheng, E. M. Lown, Otto P. Strausz
Publikováno v:
Energy & Fuels. 13:266-277
Covalent structural features and the biomarker content of an immature asphaltene originating from a saline lake deposit in China have been explored in ruthenium-ions-catalyzed oxidation. This process converts aromatic-attached aliphatic appendages to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::494997d6783d80426f2fe657cf8e955e
https://doi.org/10.1021/ef980235k
https://doi.org/10.1021/ef980235k
Publikováno v:
Energy & Fuels. 13:207-227
After some general comments on the concept of asphaltene, outstanding problems relating to the molecular structure of Athabasca asphaltene are discussed in light of new results on aromatic-attached appendages derived from ruthenium-ions-catalyzed oxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a72e28491a76b1e65506f17b4d3924c
https://doi.org/10.1021/ef980274w
https://doi.org/10.1021/ef980274w
Publikováno v:
Energy & Fuels. 13:228-247
The molecular structural units of Boscan and Duri asphaltenes have been investigated in ruthenium-ion-catalyzed oxidation (RICO) and pyrolysis. From the RICO reactions, homologous series of n-alkanoic acids (C1−C31), representing aromatic-attached
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9751d37663dee7c117a6cb6eafe739ae
https://doi.org/10.1021/ef980245l
https://doi.org/10.1021/ef980245l