HINDERED DIFFUSION OF ASPHALTENES AT EVALUATED TEMPERATURE AND PRESSURE

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During this time period, the PhD student working on this project, Mr. X. Yang, graduated and has obtained employment with Michelin Tire Company in their research and development laboratory. A new MS student, Mr. Surya Vadlamani, is now working on the project. The work conducted in this time period will form part of Mr. Vadlamani�s MS thesis. Also during the current time period, a no-cost extension was obtained for the project, which will allow Mr. Vadlamani to complete the research work required for the MS degree in chemical engineering. Since Mr. Vadlamani was new to the project and in order ... continued below

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GUIN, JAMES A. & VADLAMANI, SURYA October 3, 1998.

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Description

During this time period, the PhD student working on this project, Mr. X. Yang, graduated and has obtained employment with Michelin Tire Company in their research and development laboratory. A new MS student, Mr. Surya Vadlamani, is now working on the project. The work conducted in this time period will form part of Mr. Vadlamani�s MS thesis. Also during the current time period, a no-cost extension was obtained for the project, which will allow Mr. Vadlamani to complete the research work required for the MS degree in chemical engineering. Since Mr. Vadlamani was new to the project and in order to provide appropriate training, it was necessary to conduct some experimental work in the same ranges as performed earlier by Mr. Yang in order to provide continuity and insure duplication of the experimental data. The new data obtained by Mr. Vadlamani agree well in general with the earlier data obtained by Mr. Yang and extend the earlier data to a higher temperature range. Specifically, during this time period, uptake experiments were performed at temperatures from 25 0 C to 300 o C for the adsorptive diffusion of quinoline in cyclohexane and mineral oil onto alumina catalyst pellets. These experiments were conducted in a 40 cm 3 microautoclave, as contrasted with the previous work done in the much larger 1-liter autoclave. The use of the microautoclave is more economical from both a purchasing and waste disposal standpoint due to the small quantities of solvents and catalysts utilized, and is also significantly safer at the higher temperatures. Model simulation results showed that the mathematical model incorporating diffusion and adsorption mechanisms satisfactorily fitted the adsorptive diffusion of quinoline onto the alumina catalyst in a fairly wide temperature range of 25 o C to 300 o C. The logarithm of the adsorption constant, obtained by simulating the experimental data with the model solution, was found to be linearly dependent on temperature. The data obtained using the microautoclave agreed well with the previous data obtained using the larger 1-liter autoclave.

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  • Other: DE00007540
  • Report No.: DE-FG22-95PC95221--06
  • Grant Number: FG22-95PC95221
  • DOI: 10.2172/7540 | External Link
  • Office of Scientific & Technical Information Report Number: 7540
  • Archival Resource Key: ark:/67531/metadc706610

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  • October 3, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 29, 2016, 12:48 p.m.

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GUIN, JAMES A. & VADLAMANI, SURYA. HINDERED DIFFUSION OF ASPHALTENES AT EVALUATED TEMPERATURE AND PRESSURE, report, October 3, 1998; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc706610/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.