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Institution

ExxonMobil

CompanyIrving, Texas, United States
About: ExxonMobil is a company organization based out in Irving, Texas, United States. It is known for research contribution in the topics: Catalysis & Polymerization. The organization has 16969 authors who have published 23758 publications receiving 535713 citations. The organization is also known as: Exxon Mobil Corporation & Exxon Mobil Corp..
Topics: Catalysis, Polymerization, Polymer, Hydrocarbon, Alkyl


Papers
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Journal ArticleDOI
TL;DR: In this paper, a 3D CSEM imaging algorithm that treats transverse anisotropy is developed and used to produce a consistent resistivity model for overflight and broadside electric field measurements.
Abstract: Formation anisotropy should be incorporated into the analysis of controlled-source electromagnetic CSEM data becausefailuretodosocanproduceseriousartifactsintheresulting resistivity images for certain data configurations of interest.Thisfindingisdemonstratedinmodelandcasestudies. Sensitivity to horizontal resistivity will be strongest in the broadside electric field data where detectors are offset from the tow line. Sensitivity to vertical resistivity is strongestforoverflightdatawherethetransmittingantennapasses directlyoverthedetectingantenna.Consequently,consistent treatment of overflight and broadside electric field measurements requires an anisotropic modeling assumption. To produce a consistent resistivity model for such data, we develop and use a 3D CSEM imaging algorithm that treats transverse anisotropy. The algorithm is based on nonlinear conjugate gradients and full wave-equation modeling. It exploits parallel computing systems to effectively treat 3D imaging problems and CSEM data volumes of industrial size. We use it to demonstrate the anisotropic imaging process on model and field data sets from the North Sea and offshore Brazil. We alsoverifythatisotropicimagingofoverflightdataaloneproduces an image generally consistent with vertical resistivity. However,superiordatafitsareobtainedwhenthesameoverflight data are analyzed assuming an anisotropic resistivity model.

122 citations

Journal ArticleDOI
Daniel J. Eustace1
TL;DR: In this article, the separation process of the bromine fused salt from the aqueous solution is represented as a partitioning of Bromine between two phases and is dependent upon electrolysis state of charge, quaternary ammonium bromide, bromides ion concentration, and temperature.
Abstract: Upon electrolysis of aqueous zinc bromide solutions containing unsymmetrically substituted, cyclic quaternary ammonium bromides, both zinc metal and a bromine‐rich liquid are produced. Data, reported for N‐ethyl, N‐methylmorpholinium (1), N‐methoxymethyl, N‐methylpiperidinium (2), and N‐chloromethyl, N‐methylpyrrolidinium (3) bromides suggest that the bromine‐rich liquid is a fused salt and separates from the aqueous solution because of insolubility and density differences. The separation process of the bromine fused salt from the aqueous solution is represented as a partitioning of bromine between two phases and is dependent upon electrolysis state‐of‐charge, quaternary ammonium bromide, bromide ion concentration, and temperature. The bromine‐fused salts have properties dependent on composition. Selected examples of densities, specific resistances, viscosities, and polarization are given. Bromine, in the form of a dense, stable, conductive liquid, is useful in circulating zinc‐bromine batteries.

122 citations

Journal ArticleDOI
TL;DR: In this paper, the authors measured the velocity and attenuation of ultrasound near the glass transition of glycerol and compared the results with frequency-dependent specific-heat measurements recently performed on the same sample, finding that the relaxation time associated with the ultrasonic measurements is the same as that responsible for the dispersion seen in the specific heat experiment.
Abstract: We have measured, as a function of temperature and frequency, the velocity and attenuation of ultrasound near the glass transition of glycerol. The data are compared with that from frequency-dependent specific-heat measurements recently performed on the same sample. When the difference between adiabatic and isothermal processes is taken into account, we find that the relaxation time associated with the ultrasonic measurements is the same as that responsible for the dispersion seen in the specific-heat experiment. We also compare our results with recent hydrodynamic theories of the glass transition. The relaxation time that we measure can be fitted equally well either by a scaling form \ensuremath{\tau}=${\ensuremath{\tau}}_{0}$[(T-${T}_{h}$)/${T}_{h}$${]}^{\mathrm{\ensuremath{-}}\ensuremath{\alpha}}$, as these theories predict, or by the Vogel-Tamman-Fulcher law \ensuremath{\tau}=${\ensuremath{\tau}}_{0}$exp[E/${k}_{B}$(T-${T}_{0}$)], which has often been used to fit relaxation behavior in glasses. In the scaling-law fit, \ensuremath{\alpha}=12.5, which is unexpectedly large. The recent theory of Marchetti, which includes the wave-vector dependence of the mode-coupling vertex, provides a good fit to the frequency dependence of the data at constant temperature.

122 citations

Patent
13 May 2008
TL;DR: In this article, an engineered structured adsorbent contactor for use in pressure swing adsorption and thermal swing adaption processes is presented. But the contactor must have at least 20 volume percent or less of the open pore volume of a contactor being in the mesopore and macropore range.
Abstract: The present invention relates to engineered structured adsorbent contactors for use in pressure swing adsorption and thermal swing adsorption processes. Preferably, the contactors contain engineered and substantially parallel flow channels wherein 20 volume percent or less of the open pore volume of the contactor, excluding the flow channels, is in the mesopore and macropore range.

122 citations

Patent
17 Sep 1976
TL;DR: In this article, a substantially haze-free lubricating oil composition was proposed based on the total weight of said composition of ethylene copolymeric dispersant-viscosity index improver material, which material has been formed by grafting an ethylenecopolymer comprising about 30 to 80 wt. % ethylene and about 20 to 70 % C3 to C18 alpha olefin, with a vinyl monomer containing nitrogen.
Abstract: A substantially haze-free lubricating oil composition comprising a lubricating oil and from about 0.1 to 50 wt. %, based upon the total weight of said composition of ethylene copolymeric dispersant-viscosity index improver material, which material has been formed by (a) grafting an ethylene copolymer comprising about 30 to 80 wt. % ethylene and about 20 to 70 % C3 to C18 alpha olefin, with an ethylenically unsaturated compound selected form the group consisting of unsaturated carboxylic acid and anhydride of carboxylic acid, said ethylene copolymer when grafted with said carboxylic acid or said anhydride being further reacted with a polyfunctional reactant selected from the group consisting of polyamine, polyol and hydroxy amine, and reacting with from about 0.1 to 8 wt. % of an oil-soluble hydrocarbyl substituted strong acid containing from about 3 to about 70 total carbons to thereby inhibit haze in said composition, and wherein said strong acid is selected from the group consisting of alkyl carboxylic acids, phosphoric acid, phosphonic acid, thiophosphonic acid, phosphinic acid, thiophosphinic acid, sulfonic acid, sulfuric acid, sulfinic acid and alpha-substituted halo-or nitro- or nitrilo-carboxylic acids; or (b) grafting an ethylene copolymer comprising about 30 to 80 wt. % ethylene and about 20 to 70 wt % C3 to C18 alpha olefin, with a vinyl monomer containing nitrogen, and reacting with from about 0.1 to 8 wt. % of an oil-soluble hydrocarbyl substituted strong acid containing from about 3 to about 70 total carbons, to thereby inhibit haze in said composition.

122 citations


Authors

Showing all 16987 results

NameH-indexPapersCitations
David A. Weitz1781038114182
Avelino Corma134104989095
Peter Hall132164085019
James A. Dumesic11861558935
Robert H. Crabtree11367848634
Costas M. Soukoulis10864450208
Nicholas J. Turro104113153827
Edwin L. Thomas10460640819
Israel E. Wachs10342732029
Andrew I. Cooper9938934700
Michael J. Zaworotko9751944441
Enrique Iglesia9641631934
Yves J. Chabal9451933820
George E. Gehrels9245430560
Ping Sheng9059337141
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20234
202236
2021302
2020340
2019366
2018438