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 & 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 published on a yearly basis
Papers
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TL;DR: Polybutadiene prepare par voie anionique, avec une distribution etroite de la masse moleculaire, a with une faible teneur en groupe vinyl and une masse comprise entre 1,10 3 and 1,65•10 7.
Abstract: Polybutadiene prepare par voie anionique, avec une distribution etroite de la masse moleculaire avec une faible teneur en groupe vinyl et une masse comprise entre 1,10 3 et 1,65•10 7
330 citations
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TL;DR: In this article, the synthesis and evaluation of high performance MFI-type membranes is described, which exhibit fluxes that are one to two orders of magnitude higher than previous literature reports.
326 citations
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TL;DR: In this article, the properties of dendrimers under varying solvent conditions are studied using molecular dynamics simulations, and it is shown that the dendrigers have a compact (space filling) structure under all solvent conditions, with a radius of gyration which scales with the number of monomers as RG ∝ N 1/3.
Abstract: The properties of dendrimers (“starburst” molecules) under varying solvent conditions are studied using molecular dynamics simulations. The dendrimers are found to have a compact (space filling) structure under all solvent conditions, with a radius of gyration which scales with the number of monomers as RG ∝ N1/3. For high generation number dendrimers, there is a distinct region of constant monomer density. The density in this region depends only on the solvent quality and is independent of the generation number. When the contributions of the different generations to the overall density profile are separated, we find that the monomers which belong to the first few generations are stretched and spatially localized. Later generations are less localized and penetrate well into the central regions of the dendrimer. The different primary branches (“dendrons”) of the dendrimers are found to be segregated. The amount of spatial overlap between the different dendrons decreases with increasing generation number of...
324 citations
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TL;DR: In this article, the authors focus on selectivity control and catalyst design in the Fischer-Tropsch (FT) synthesis and propose a model that describes the catalytic behavior of more complex Fe based materials, where several chain termination steps and highly nonuniform and dynamic surfaces introduce additional details into the models required to describe FT synthesis selectivity models.
Abstract: Publisher Summary This chapter focuses on selectivity control and catalyst design in the Fischer-Tropsch (FT) synthesis. Chain growth during the FT synthesis is controlled by surface polymerization kinetics that place severe restrictions on our ability to alter the resulting carbon number distribution. Intrinsic chain growth kinetics are not influenced strongly by the identity of the support or by the size of the metal crystallites in supported Co and Ru catalysts. Transport-limited reactant arival and product removal, however, depend on support and metal site density and affect the relative rates of primary and secondary reactions and the FT synthesis selectivity. Diffusion-limited removal of products from catalyst pellets leads to enhanced readsorption and chain initiation by reactive α-olefins. Diffusive and convective transport processes introduce flexibility in the design of catalyst pellets and in the control of FT synthesis selectivity. The model is proposed in the chapter that describes the catalytic behavior of more complex Fe based materials, where several chain termination steps and highly non-uniform and dynamic surfaces introduce additional details into the models required to describe FT synthesis selectivity models.
323 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 |