Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Howard Freund"'
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:
Kenneth E. Peters, William A. Lamberti, Howard Freund, Simon R. Kelemen, Mobae Afeworki, Trudy B. Bolin, Robert J. Pottorf, P. J. Kwiatek, Hans G. Machel, Michael Sansone, Clifford C. Walters
Publikováno v:
Geochimica et Cosmochimica Acta. 74:5305-5332
Solid bitumen can arise from several reservoir processes acting on migrated petroleum. Insoluble solid organic residues can form by oxidative processes associated with thermochemical sulfate reduction (TSR) as well as by thermal chemical alteration (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f50b3335c1503a6a65592c5cfa50fc3
https://doi.org/10.1016/j.gca.2010.06.013
https://doi.org/10.1016/j.gca.2010.06.013
Publikováno v:
Organic Geochemistry. 38:306-322
We have developed a method for calculating from first principles the amounts and composition of products resulting from the thermal decomposition of a solid complex carbonaceous material. Advanced solid state analysis provides chemical and property m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a258128659fb5eaf3325e49274f5c710
https://doi.org/10.1016/j.orggeochem.2006.09.010
https://doi.org/10.1016/j.orggeochem.2006.09.010
Autor:
A.E. Bence, Clifford C. Walters, Michael Siskin, Simon R. Kelemen, Howard Freund, Martin L. Gorbaty, David J. Curry
Publikováno v:
Organic Geochemistry. 38:288-305
The ability to predict accurately the thermal conversion of complex carbonaceous materials under a wide range of heating rates and temperatures is of value in both petroleum exploration and refining operations. Modeling the thermal cracking of keroge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb558e5b9e022b5b6c51eced98f485a4
https://doi.org/10.1016/j.orggeochem.2006.09.009
https://doi.org/10.1016/j.orggeochem.2006.09.009
Publikováno v:
Energy & Fuels. 20:309-319
The expulsion of hydrocarbons from kerogen is the initial step in the primary migration process, during which the composition of the expelled petroleum is enriched in saturated and aromatic hydrocarbons while the retained bitumen is enriched in polar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dead121c735274efebc45a370a96c5a
https://doi.org/10.1021/ef058023s
https://doi.org/10.1021/ef058023s
Publikováno v:
Energy & Fuels. 13:877-880
The need for detailed molecular information from kinetic models has given rise to the practice of modeling the chemistry at either the molecular or mechanistic level. These models are often used to...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::def46bcdc2b706c8a983f0cb56d1688a
https://doi.org/10.1021/ef980259r
https://doi.org/10.1021/ef980259r
Publikováno v:
Energy & Fuels. 13:529-538
X-ray photoelectron spectroscopy (XPS) was used to identify the forms of nitrogen present in Green River Type I and Bakken Type II kerogen concentrate samples and to follow the changes in nitrogen forms in the tars and chars produced upon pyrolysis.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c69350ba79471f2f22e02117f74e6745
https://doi.org/10.1021/ef9802126
https://doi.org/10.1021/ef9802126
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. 7:1088-1094
Laboratory experiments on three different source rock samples indicate that pressure effects on generation kinetics are measurable but minor. Pressure effects are quantified in terms of an activated volume which is analogous to the use of activation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afab63e2f95770728c2791628bdddce6
https://doi.org/10.1021/ef00042a055
https://doi.org/10.1021/ef00042a055