Institution
ExxonMobil
Company•Irving, 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 & Polymer. 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, Polymer, Polymerization, Hydrocarbon, Alkyl
Papers published on a yearly basis
Papers
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TL;DR: In this paper, it was found that the wake bubble grows in length approximately linearly with Re. The width increases like Re12 up to Re = 300 at which the wake resembles a pair of translating, uniform vortices, both touching the center line.
196 citations
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15 Oct 2003TL;DR: In this paper, a branching index (g') of 0.95 or less measured at the Mz of the polymer was defined, and the ratio of the first catalyst to the second catalyst is from 1:1 to 50:1, where at least 20% of the olefins are converted to polymer.
Abstract: This invention relates to a polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ehtylene, where the polymer has: a) a Dot T-Peel of 1 Newton or more; and b) a branching index (g') of 0.95 or less measured at the Mz of the polymer; c) an Mw of 100,000 or less and to a continuous process to produce a branched olefin polymer comprising 1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 5% or less under selected polymerization conditions; 2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more at the selected polymerization conditions; 3) contacting the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins, and, optionally one or more diolefins; 4) at a temperature of greater than 100°C; 5) at a residence time of 120 minutes or less; 6) wherein the ratio of the first catalyst to the second catalyst is from 1:1 to 50:1; 7) wherein the activity of the catalyst components is at least 100 kilograms of polymer per gram of the catalyst components; and wherein at least 20% of the olefins are converted to polymer.
196 citations
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TL;DR: In this paper, the precursors CaMnO 3 and Ca 2 MnO 4 were reduced with any one of a variety of inorganic (H 2, NH 3 ) or organic (C 2 H 4, C 3 H 6 ) reducing agents between 300 and 500°C.
196 citations
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TL;DR: In this article, the effects of salinity and cosurfactant on phase behavior, viscosity, resistivity, optical birefringence, and interfacial tension are investigated.
Abstract: Whenever water, an oil, and a surfactant equilibrate at concentrations of surfactant in excess of critical micelle concentrations, one or more microemulsions form. In view of this, all surfactant flooding processes may involve microemulsions in situ. Ternary diagrams have been constructed for 3 specific microemulsion systems showing the effects of salinity and cosurfactant on phase behavior, viscosity, resistivity, optical birefringence, and interfacial tension. Using these data, micellar structure maps were prepared for the single-phase region. In this connection, Winsor's concept of intermicellar equilibrium was found consistent with microemulsion systems of interest for tertiary oil recovery. Experimental techniques are described for minimizing extent of the multiphase region and measuring low interfacial tensions that obtain there. (21 refs.)
195 citations
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10 Aug 1981TL;DR: In this paper, a method for reducing the permeability of underground formations penetrated by a wellbore by placing the composition of the present invention down the well-bore was proposed.
Abstract: The present invention relates generally to the composition and method for reducing the permeability of subterranean formations penetrated by a wellbore. The composition of the present invention comprises a wellbore fluid having dispersed therein a fluid loss control agent comprising a polyester polymer which is substantially insoluble in the wellbore fluid. The polymer degrades in the presence of water at an elevated temperature to form small molecules which are soluble in a fluid in the subterranean formation. The method of the present invention comprises reducing the permeability of subterranean formations penetrated by a wellbore by placing the composition of the present invention down the wellbore.
195 citations
Authors
Showing all 16987 results
Name | H-index | Papers | Citations |
---|---|---|---|
David A. Weitz | 178 | 1038 | 114182 |
Avelino Corma | 134 | 1049 | 89095 |
Peter Hall | 132 | 1640 | 85019 |
James A. Dumesic | 118 | 615 | 58935 |
Robert H. Crabtree | 113 | 678 | 48634 |
Costas M. Soukoulis | 108 | 644 | 50208 |
Nicholas J. Turro | 104 | 1131 | 53827 |
Edwin L. Thomas | 104 | 606 | 40819 |
Israel E. Wachs | 103 | 427 | 32029 |
Andrew I. Cooper | 99 | 389 | 34700 |
Michael J. Zaworotko | 97 | 519 | 44441 |
Enrique Iglesia | 96 | 416 | 31934 |
Yves J. Chabal | 94 | 519 | 33820 |
George E. Gehrels | 92 | 454 | 30560 |
Ping Sheng | 90 | 593 | 37141 |