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Catalytic Cracking of n-Dodecane over Alkali-Metal-Modified ZSM-5 Zeolites
https://orcid.org/https://orcid.org/0000-0002-8851-2013
https://orcid.org/https://orcid.org/0000-0002-1709-423X
https://orcid.org/https://orcid.org/0000-0002-2755-7998
https://orcid.org/https://orcid.org/0000-0003-2565-8223
https://orcid.org/https://orcid.org/0000-0002-5557-6408
https://orcid.org/https://orcid.org/0000-0003-3103-7925
The physicochemical properties of ZSM-5 zeolite samples modified with alkali metal cations (e.g., Li+, Na+, K+, and Cs+) were characterized. It was demonstrated that increasing the metal load led to a decrease in the textural properties of the zeolite such as specific surface area, total pore volume, and micropore volume; furthermore, it reduced the total concentration of acid sites by 23–25% (at 0.72 × 10–2 mol % potassium or 0.38 × 10–2 mol % cesium). In the cracking of n-dodecane, the modification of ZSM-5 with 2.34 × 10–2 mol% cesium enhanced the yield of light olefins up to 40.1 wt %, which is comparable with the value achieved by a phosphorus-based ZSM-5 sample (40.3 wt %).
Catalytic Cracking of n-Dodecane over Alkali-Metal-Modified ZSM-5 Zeolites
https://orcid.org/https://orcid.org/0000-0002-8851-2013
https://orcid.org/https://orcid.org/0000-0002-1709-423X
https://orcid.org/https://orcid.org/0000-0002-2755-7998
https://orcid.org/https://orcid.org/0000-0003-2565-8223
https://orcid.org/https://orcid.org/0000-0002-5557-6408
https://orcid.org/https://orcid.org/0000-0003-3103-7925
The physicochemical properties of ZSM-5 zeolite samples modified with alkali metal cations (e.g., Li+, Na+, K+, and Cs+) were characterized. It was demonstrated that increasing the metal load led to a decrease in the textural properties of the zeolite such as specific surface area, total pore volume, and micropore volume; furthermore, it reduced the total concentration of acid sites by 23–25% (at 0.72 × 10–2 mol % potassium or 0.38 × 10–2 mol % cesium). In the cracking of n-dodecane, the modification of ZSM-5 with 2.34 × 10–2 mol% cesium enhanced the yield of light olefins up to 40.1 wt %, which is comparable with the value achieved by a phosphorus-based ZSM-5 sample (40.3 wt %).
Catalytic Cracking of n-Dodecane over Alkali-Metal-Modified ZSM-5 Zeolites
https://orcid.org/https://orcid.org/0000-0002-8851-2013
https://orcid.org/https://orcid.org/0000-0002-1709-423X
https://orcid.org/https://orcid.org/0000-0002-2755-7998
https://orcid.org/https://orcid.org/0000-0003-2565-8223
https://orcid.org/https://orcid.org/0000-0002-5557-6408
https://orcid.org/https://orcid.org/0000-0003-3103-7925
The physicochemical properties of ZSM-5 zeolite samples modified with alkali metal cations (e.g., Li+, Na+, K+, and Cs+) were characterized. It was demonstrated that increasing the metal load led to a decrease in the textural properties of the zeolite such as specific surface area, total pore volume, and micropore volume; furthermore, it reduced the total concentration of acid sites by 23–25% (at 0.72 × 10–2 mol % potassium or 0.38 × 10–2 mol % cesium). In the cracking of n-dodecane, the modification of ZSM-5 with 2.34 × 10–2 mol% cesium enhanced the yield of light olefins up to 40.1 wt %, which is comparable with the value achieved by a phosphorus-based ZSM-5 sample (40.3 wt %).
Catalytic Cracking of n-Dodecane over Alkali-Metal-Modified ZSM-5 Zeolites
Pet. Chem.
Giliazutdinova, A. S. (Autor:in) / Sorokina, T. P. (Autor:in) / Potapenko, O. V. (Autor:in) / Doronin, V. P. (Autor:in) / Ogurtsova, D. N. (Autor:in) / Koveza, V. A. (Autor:in)
Petroleum Chemistry ; 64 ; 1106-1112
01.09.2024
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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