Hydrodesulfurization of dibenzothiophene using hydrogen generated in situ by the water-gas shift reaction in a trickle bed reactor /
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[College Station, Texas] :
[Texas A & M University],
1984.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Abstract: | Global depletion of sweet crude oil has required greater use of high sulfur content hydrocarbon resources. As a result hydrodesulfurization is becoming a major cost factor in refining due to the prohibitive cost of hydrogen. This study attempted to show that hydrodesulfurization can be achieved by generating in situ the hydrogen necessary for the reaction. A commercial sulfided CoOMoO₃/[gamma]-A1²O₃ catalyst was used. Dibenzothiophene was chosen as the model compound for this work since it is representative of the polycyclic sulfur heteroatoms which are the most difficult of the sulfur containing compounds found in oil to desulfurize. A trickle bed reactor was used for the hydrodesulfurization reaction. A data analysis program was developed which accounts for the volatility of the liquid phase in the trickle bed reactor. Zero, first and second order rate expressions were tested with the analysis technique, and activation energies and rate constants were calculated for each case. Based on the sum of squares of deviations between predicted and experimental converions, the zero order rate expression was determined to give the "best fit". The activation energy for the zero order rate expression was 31.23 kcal/gmol, and the Arrhenius constant was 3.963x10⁵ gmol/(gcat min). |
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| Item Description: | "Major subject: Chemical Engineering." Typescript (photocopy). Vita. |
| Physical Description: | x, 57 leaves : illustrations ; 29 cm. Also available online. |
| Bibliography: | Bibliography: leaves 45-47. |