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Dynamics of Silicon Sorption on the NiMo/Al2O3 Guard Bed Catalyst During Hydrotreating of Diesel
https://orcid.org/https://orcid.org/0000-0002-6069-4150
https://orcid.org/https://orcid.org/0000-0002-9100-5135
https://orcid.org/https://orcid.org/0000-0002-2335-7032
https://orcid.org/https://orcid.org/0000-0002-8336-1797
https://orcid.org/https://orcid.org/0009-0006-6377-5702
https://orcid.org/https://orcid.org/0000-0002-1616-6801
https://orcid.org/https://orcid.org/0000-0002-7038-2070
The dynamics of the silicon sorption on the NiMo/Al2O3 guard-bed catalyst containing ~2.0 wt % Ni and ~6.0 wt % Mo during hydrotreating of diesel was studied. The catalyst bed was divided into five equal sections separated by perforated metal partitions permeable to the feed. Four series of experiments were performed; their time was varied in the range 48–200 h, and the temperature was 340°C. A diesel fraction containing ~1.0 wt % sulfur, 130 ppm nitrogen, and 200 ppm silicon introduced in the form of decamethylcyclopentasiloxane was used as the feed. The specific surface area of all the spent samples was 170–190 m2/g, the pore volume was 0.35– 0.43 cm3/g, and the average pore diameter was 8–9 nm. The sorption on a catalyst grain 2.5 mm in diameter is diffusion-controlled. The effective mass transfer coefficient and the catalyst capacity under the experimental conditions (5 wt %) were estimated using the equation describing the sorption process.
Dynamics of Silicon Sorption on the NiMo/Al2O3 Guard Bed Catalyst During Hydrotreating of Diesel
https://orcid.org/https://orcid.org/0000-0002-6069-4150
https://orcid.org/https://orcid.org/0000-0002-9100-5135
https://orcid.org/https://orcid.org/0000-0002-2335-7032
https://orcid.org/https://orcid.org/0000-0002-8336-1797
https://orcid.org/https://orcid.org/0009-0006-6377-5702
https://orcid.org/https://orcid.org/0000-0002-1616-6801
https://orcid.org/https://orcid.org/0000-0002-7038-2070
The dynamics of the silicon sorption on the NiMo/Al2O3 guard-bed catalyst containing ~2.0 wt % Ni and ~6.0 wt % Mo during hydrotreating of diesel was studied. The catalyst bed was divided into five equal sections separated by perforated metal partitions permeable to the feed. Four series of experiments were performed; their time was varied in the range 48–200 h, and the temperature was 340°C. A diesel fraction containing ~1.0 wt % sulfur, 130 ppm nitrogen, and 200 ppm silicon introduced in the form of decamethylcyclopentasiloxane was used as the feed. The specific surface area of all the spent samples was 170–190 m2/g, the pore volume was 0.35– 0.43 cm3/g, and the average pore diameter was 8–9 nm. The sorption on a catalyst grain 2.5 mm in diameter is diffusion-controlled. The effective mass transfer coefficient and the catalyst capacity under the experimental conditions (5 wt %) were estimated using the equation describing the sorption process.
Dynamics of Silicon Sorption on the NiMo/Al2O3 Guard Bed Catalyst During Hydrotreating of Diesel
https://orcid.org/https://orcid.org/0000-0002-6069-4150
https://orcid.org/https://orcid.org/0000-0002-9100-5135
https://orcid.org/https://orcid.org/0000-0002-2335-7032
https://orcid.org/https://orcid.org/0000-0002-8336-1797
https://orcid.org/https://orcid.org/0009-0006-6377-5702
https://orcid.org/https://orcid.org/0000-0002-1616-6801
https://orcid.org/https://orcid.org/0000-0002-7038-2070
The dynamics of the silicon sorption on the NiMo/Al2O3 guard-bed catalyst containing ~2.0 wt % Ni and ~6.0 wt % Mo during hydrotreating of diesel was studied. The catalyst bed was divided into five equal sections separated by perforated metal partitions permeable to the feed. Four series of experiments were performed; their time was varied in the range 48–200 h, and the temperature was 340°C. A diesel fraction containing ~1.0 wt % sulfur, 130 ppm nitrogen, and 200 ppm silicon introduced in the form of decamethylcyclopentasiloxane was used as the feed. The specific surface area of all the spent samples was 170–190 m2/g, the pore volume was 0.35– 0.43 cm3/g, and the average pore diameter was 8–9 nm. The sorption on a catalyst grain 2.5 mm in diameter is diffusion-controlled. The effective mass transfer coefficient and the catalyst capacity under the experimental conditions (5 wt %) were estimated using the equation describing the sorption process.
Dynamics of Silicon Sorption on the NiMo/Al2O3 Guard Bed Catalyst During Hydrotreating of Diesel
Pet. Chem.
Golubev, I. S. (author) / Dik, P. P. (author) / Petrov, R. V. (author) / Mik, I. A. (author) / Bessonova, N. V. (author) / Reshetnikov, S. I. (author) / Noskov, A. S. (author)
Petroleum Chemistry ; 63 ; 1203-1209
2023-10-01
7 pages
Article (Journal)
Electronic Resource
English
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