Zobrazeno 1 - 10
of 20
pro vyhledávání: '"William N. Olmstead"'
Publikováno v:
Energy & Fuels. 27:1817-1829
The chemical building blocks that comprise petroleum asphaltene molecules were determined by thermal cracking of samples under conditions that minimized alterations to aromatic and cycloalkyl groups. Favorable hydrogenation conditions that used tetra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcae3697386647eeff6486ab382ae03c
https://doi.org/10.1021/ef301521q
https://doi.org/10.1021/ef301521q
Autor:
Murray R. Gray, William N. Olmstead, Howard Freund, Kuangnan Qian, Arash Karimi, Cathleen Yung
Publikováno v:
Energy & Fuels. 25:3581-3589
Thin film pyrolysis was used to thermally crack asphaltene molecules into their constituent building blocks at 500 °C. By using a thin film of liquid of ca. 20 μm, the cracked products were rapidly released into a much colder sweep gas stream to qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1063ac1deba624c86074e822843bf786
https://doi.org/10.1021/ef200518g
https://doi.org/10.1021/ef200518g
Autor:
Kuangnan Qian, and Gary J. Dechert, M. Siskin, William N. Olmstead, Kathleen E. Edwards, Norman E. Hoosain, Anthony S. Mennito
Publikováno v:
Energy & Fuels. 21:1042-1047
Field desorption (FD) ionization is studied for the measurement of the molecular weight distribution of heavy petroleum, vacuum residua, and asphaltene derived from them. Hydrocarbon polymers, heavy petroleum distillation cuts, and chemical and solub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa494f73327580b3e2f53e6d687e9916
https://doi.org/10.1021/ef060360t
https://doi.org/10.1021/ef060360t
Autor:
Ryan P. Rodgers, Larry A. Green, William N. Olmstead, Alan G. Marshall, Tanner Schaub, Kuangnan Qian
Publikováno v:
Energy & Fuels. 19:1566-1573
We present continuous flow field desorption ionization Fourier transform ion cyclotron resonance mass spectrometry (FD FT-ICR MS) as a method for detailed speciation of aromatic compounds in fractionated crude oils and petroleum refinery process stre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f07795734f7e8540eb954dbf79981ff8
https://doi.org/10.1021/ef049734d
https://doi.org/10.1021/ef049734d
Autor:
William N. Olmstead, John I. Brauman
Publikováno v:
Journal of Mass Spectrometry. 30:1653-1662
Displacement reactions of each of a variety of anionic nucleophiles reacting with each of a variety of neutrals have been studied by pulsed ion cyclotron resonance (ICR) spectroscopy. Rate constants for these reactions are interpreted in terms of a t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f40ec6265a69452e310a699b14dafb88
https://doi.org/10.1002/jms.1190301204
https://doi.org/10.1002/jms.1190301204
Autor:
Steven M. Allin, William N. Olmstead, Petia A. Shipkova, Michael Siskin, Alan R. Katritzky, Richard A. Barcock
Publikováno v:
Energy & Fuels. 9:580-589
Seven nitrogen-containing heterocycles were chosen to complement a previous investigation (Energy Fuels 1994, 8, 990) of aqueous hydrogenation and denitrogenation of fossil fuel model compounds: 5,6,7,8-tetrahydroquinoline, pyrrole, 2,5-dimethylpyrro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::304c1484074b34bb0a1b7b71177608be
https://doi.org/10.1021/ef00052a003
https://doi.org/10.1021/ef00052a003
Autor:
J. Douglas Kushnerick, William N. Olmstead, Roland B. Saeger, Cathleen Yung, Birbal Chawla, Kuangnan Qian, Manny A. Francisco, Anthony S. Mennito, Chunping Wu, Howard Freund, Karl J. Hickey, Kathleen E. Edwards
Publikováno v:
Analytical chemistry. 84(10)
Collision-induced dissociation Fourier Transform ion cyclotron resonance mass spectrometry (CID-FTICR MS) was developed to determine structural building blocks in heavy petroleum systems. Model compounds with both single core and multicore configurat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bdedb1102818725ad80799bf3065346
https://pubmed.ncbi.nlm.nih.gov/22524203
https://pubmed.ncbi.nlm.nih.gov/22524203
Publikováno v:
Energy & Fuels. 8:990-1001
Eleven nitrogen-containing heterocycles were chosen as fossil fuel model compounds: pyridine, quinoline, 2-methylquinoline (quinaldine), isoquinoline, acridine, phenanthridine, 1,2,3,4-tetrahy-droquinoline, indole, 2-methylindole, 2,3-dimethylindole,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fa15d5c634f6ec29a689c876236862b
https://doi.org/10.1021/ef00046a026
https://doi.org/10.1021/ef00046a026
Autor:
John V. Greenhill, Michael Siskin, Richard A. Barcock, Alan R. Katritzky, William N. Olmstead, Marudai Balasubramanian
Publikováno v:
Energy & Fuels. 8:498-506
Ten sulfur-containing compounds were selected to serve as models for the sulfur-containing impurities in heavy oils. They were subjected to aquathermolysis in water, 15% aqueous formic acid, and 15% aqueous sodium formate solution for 7 min at 460°
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edbd0db566abb1b7d1e515f3399ab84d
https://doi.org/10.1021/ef00044a031
https://doi.org/10.1021/ef00044a031
Autor:
Marudai Balasubramanian, John V. Greenhill, William N. Olmstead, Alan R. Katritzky, Michael Siskin, Richard A. Barcock
Publikováno v:
Energy & Fuels. 8:487-497
The reactions of a series of hydrocarbon- and oxygen-containing organic compounds have been studied in supercritical water, 15% aqueous formic acid, and 15% aqueous sodium formate at 460 ° C. For each substrate, a solution in cyclohexane at 460° C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d212c51ad1f1380926fa0ba84f0b8a0d
https://doi.org/10.1021/ef00044a030
https://doi.org/10.1021/ef00044a030