Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Ursula Ehrmann"'
Autor:
Renzo C. Silva, Pedro Pereira-Almao, Thomas B. P. Oldenburg, Steve Larter, Lante Carbognani Ortega, Melisa Brown, Ursula Ehrmann, Farouq Ahmed, Jagoš R. Radović
Publikováno v:
Energy & Fuels. 30:171-179
The dissolution of organic matter into water via oxidative processes, named oxycracking, has been practiced for a long time for the removal of organic pollutants, in which oxygen induces breakage and functionalization of organic molecules. Recently,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a4ec669110911f13434ac2591260f06
https://doi.org/10.1021/acs.energyfuels.5b02215
https://doi.org/10.1021/acs.energyfuels.5b02215
Publikováno v:
Journal of Petroleum Science and Engineering. 127:421-432
Heavy crude oils from Venezuelan Orinoco belt needs special and costly handling processes due to its high viscosity, sulfur and metals content. Different biotechnological applications have been aimed to improve these properties. However, emulsified s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4840736bc74596eaaae4e522fad4514
https://doi.org/10.1016/j.petrol.2015.01.039
https://doi.org/10.1016/j.petrol.2015.01.039
Publikováno v:
Energy & Fuels. 26:6863-6868
In the petroleum industry, the implementation of new methodologies requires a validation procedure in order to guarantee compliance with the specifications. This study presents a comparison between the methodology proposed for the determination of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84cf730e0c85b0d25825a5f895241787
https://doi.org/10.1021/ef301193x
https://doi.org/10.1021/ef301193x
Publikováno v:
Petroleum Science and Technology. 18:607-634
Isolation of very large alkane components as described in the first paper within this series, fail in some cases. This work describes two non-routine isolation procedures applied to two different non-typical petroleum fractions. The first one compris
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad701cd7c4f76d2f66b90ca4529cc130
https://doi.org/10.1080/10916460008949863
https://doi.org/10.1080/10916460008949863
Publikováno v:
Field Analytical Chemistry & Technology. 1:87-92
The evolution of dedicated microcomputers and microcontrollers, in addition to silicon microfabrication and other micromachining technologies, and the integration of these technologies, is having a profound impact on both the functioning and the appl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f9b18755c56ec3320f9586cbe3ad980
https://doi.org/10.1002/(sici)1520-6521(1996)1:2<87::aid-fact4>3.0.co
https://doi.org/10.1002/(sici)1520-6521(1996)1:2<87::aid-fact4>3.0.co
Publikováno v:
International Oil Spill Conference Proceedings. 1995:185-189
Source identification of spilled petroleum during incidents is a crucial piece of information required for response activities. The need for rapid, accurate assessment is essential at the onset of a spill to determine the extent and impacts of the in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63989f21170e1b9911ad02dbc4d337bb
https://doi.org/10.7901/2169-3358-1995-1-185
https://doi.org/10.7901/2169-3358-1995-1-185
Autor:
Ursula Ehrmann, Alejandro Izquierdo
Publikováno v:
Fuel Science and Technology International. 12:1193-1220
This paper describes an exploratory study on the characterization of oil heavy-end fractions through pyrolysis coupled with gas chromatography. A pulse heating pyrolyzer with a platinum-strip sample holder, directly coupled with a capillary column ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bc3333abb152a7c8e3200be1b1d4912
https://doi.org/10.1080/08843759408916230
https://doi.org/10.1080/08843759408916230
Publikováno v:
Fuel Science and Technology International. 12:267-280
Acidic compounds in cracked components of gasoline, isolated by extraction with aqueous solutions of sodium bicarbonate and sodium hydroxide, were identified as phenol and its mono- di - tri- and tetramethyl- derivatives. Aromatic sulfur compounds se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4abf9d2744cac411c000d55f080d5a1e
https://doi.org/10.1080/08843759408916178
https://doi.org/10.1080/08843759408916178
Publikováno v:
Fuel Science and Technology International. 11:697-712
Polar compounds were isolated from one gollon of FCC by acid-base extraction followed by aluminum oxide adsorption chromatography. Fractions were tested with an Induction System Deposit (ISO( apparatus and the basic fraction was characterized by hydr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b8936f9591cf8162d9593169c8c24bb
https://doi.org/10.1080/08843759308916093
https://doi.org/10.1080/08843759308916093
Publikováno v:
Journal of High Resolution Chromatography. 15:467-471
Two methods have been developed for the determination of trace levels of acetonitrile and propionitrile in light naphthas. One involves clean-up and preconcentration by medium pressure liquid chromatography (MPLC) in which nitriles are concentrated t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0027eba7c9d2d885a8d7356fccc8eb3a
https://doi.org/10.1002/jhrc.1240150712
https://doi.org/10.1002/jhrc.1240150712