Zobrazeno 1 - 10
of 134
pro vyhledávání: '"Peter K. Kilpatrick"'
Autor:
Shamel S. Merchant, Yunlong Zhang, Kazem V. Edmond, Peter K. Kilpatrick, Michael R. Harper, Bryson McKay Rytting
Publikováno v:
Energy & Fuels. 34:5444-5456
Vanadyl petroporphyrins purified from a North American petroleum vacuum residue are used in experiments probing the interfacial phenomena of the petroporphyrins as well as asphaltene-petroporphyrin...
Publikováno v:
Energy & Fuels. 34:164-178
Small-angle neutron scattering (SANS) is used to characterize the aggregation of pure vanadyl petroporphyrins (VOPPs), as well as of asphaltenes mixed with either VOPPs or synthetic porphyrins. Sim...
Autor:
Shamel S. Merchant, Clifford C. Walters, Katharina Kaiser, Michael R. Harper, J. Douglas Kushnerick, Kuangnan Qian, Leo Gross, B. McKay Rytting, Fabian Schulz, Peter K. Kilpatrick, Yunlong Zhang, Anthony S. Mennito, Jordan N. Metz
Publikováno v:
Energy & Fuels
Determination of the molecular structures of petroporphyrins has been crucial to understand the diagenetic pathways and maturation of petroleum. However, these studies have been hampered by their structural complexity and the challenges associated wi
Autor:
Yunlong Zhang, Michael R. Harper, J. Douglas Kushnerick, Anthony S. Mennito, Shamel S. Merchant, Thomas R. Fredriksen, B. McKay Rytting, Kuangnan Qian, Peter K. Kilpatrick
Publikováno v:
Fuel. 239:1258-1264
A host of vanadyl petroporphyrins containing multiple sulfur and oxygen atoms and their combinations (CcH2c+ZN4VOoSs, s = 0–3, o = 1–4, Z = −28 to −70) in a vacuum residue were observed by a combination of extensive enrichment of petroporphyr
Autor:
B. McKay Rytting, Yunlong Zhang, Anthony S. Mennito, Peter K. Kilpatrick, I. D. Singh, Michael R. Harper
Publikováno v:
Energy & Fuels. 32:5711-5724
Petroporphyrins contribute to many of the challenges encountered when producing, transporting, and refining heavy crude oil and bitumen. They are the source of heavy metals that poison catalysts and may facilitate the aggregation, deposition, and emu
Publikováno v:
Energy & Fuels
Autor:
Peter K. Kilpatrick
Publikováno v:
Energy & Fuels. 26:4017-4026
Emulsions of oil droplets in water but more typically water droplets in oil are common in the production, transportation, and refining of petroleum and related products. Emulsions of water in petroleum or petroleum-derived liquids can be stabilized b
Publikováno v:
The Journal of Physical Chemistry B. 113:13788-13799
The formation of stable water-in-petroleum emulsions is a costly challenge when transporting, processing, and refining heavy crude oil and bitumen. The stability of these emulsions is attributed to interfacial films with well-documented viscoelastic
Publikováno v:
ACS Applied Materials & Interfaces. 1:1347-1357
The adsorption of asphaltenes onto flat silica surfaces modified with self-assembled monolayers (SAMs) of alkyltrichlorosilanes of varying thickness due to a variable number of carbon atoms (N(C)) has been studied by means of contact angle measuremen
Publikováno v:
The Journal of Supercritical Fluids. 45:146-155
This paper focuses on the extraction of sclareol from the leaves of Salvia sclarea Lamiaceae, more commonly known as Clary sage. The process involves the extraction of sclareol using a CO2-soluble GRAS solvent such as ethyl lactate, followed by GAS a