Hindered Diffusion of Asphaltenes at Elevated Temperature and Pressure Progress Report

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The mathematical model which we have developed previously for diffusion controlled adsorption was extended to allow for the inclusion of the effects of extraparticle film mass transfer resistance as embodied in a finite Sherwood number. A Mathcad based program was used to simulate the experimental data using summation of a large number of terms in the infinite series solution. Parametric studies and accompanying plots revealed that the effects of film resistance on the uptake process were found to increase in significance as the adsorption capacity parameter in the model decreased. In addition, the two carbon catalyst supports prepared in our … continued below

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36 pages

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Guin, James A.; Ramakrishnan, Ganesh; Asada, Keiji & Mosley, Brian April 2001.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 26 times. More information about this report can be viewed below.

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  • Auburn University
    Publisher Info: Auburn University (United States)
    Place of Publication: Auburn, Alabama

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The mathematical model which we have developed previously for diffusion controlled adsorption was extended to allow for the inclusion of the effects of extraparticle film mass transfer resistance as embodied in a finite Sherwood number. A Mathcad based program was used to simulate the experimental data using summation of a large number of terms in the infinite series solution. Parametric studies and accompanying plots revealed that the effects of film resistance on the uptake process were found to increase in significance as the adsorption capacity parameter in the model decreased. In addition, the two carbon catalyst supports prepared in our own laboratory were tested for their diffusional characteristics in uptake experiments using petroleum asphaltenes dissolved in toluene at three temperatures. The resulting experimental data were simulated with the mathematical model developed in the report.

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36 pages

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OSTI as DE00816522

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  • April 2001

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  • Oct. 18, 2015, 6:40 p.m.

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  • Dec. 20, 2024, 4:11 a.m.

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Guin, James A.; Ramakrishnan, Ganesh; Asada, Keiji & Mosley, Brian. Hindered Diffusion of Asphaltenes at Elevated Temperature and Pressure Progress Report, report, April 2001; Auburn, Alabama. (https://digital.library.unt.edu/ark:/67531/metadc733660/: accessed June 14, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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