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Evaluation of the Properties of ZSM-5 Type Zeolites Modified with CexMg1–xAl2O4 Nanopowders in the Toluene Disproportionation Reaction
https://orcid.org/http://orcid.org/0000-0001-7772-8583
https://orcid.org/http://orcid.org/0000-0002-3211-9183
https://orcid.org/http://orcid.org/0000-0002-8099-9496
https://orcid.org/http://orcid.org/0000-0003-0912-8687
https://orcid.org/http://orcid.org/0000-0003-4122-6391
The effect of CexMg1–xAl2O4 spinel nanopowders on the textural, acidic, and catalytic properties displayed by HZSM-5 zeolite in the toluene disproportionation reaction was examined. Modification with CexMg1–xAl2O4 nanopowders caused a decrease in the concentration of strong protonic sites, formation of new stronger aprotonic sites, and a decrease in the pore volume of HZSM-5, thereby creating more steric hindrance to diffusion of o- and m-xylenes and enhancing para-selectivity of the catalyst. The possibility of achieving high p-xylene selectivity of 65.7–77.3% via toluene disproportionation over the optimal 5% Сe0.1Mg0.9Al2O4/HZSM-5 catalyst at toluene conversion of 20.3–29.7% was demonstrated.
Evaluation of the Properties of ZSM-5 Type Zeolites Modified with CexMg1–xAl2O4 Nanopowders in the Toluene Disproportionation Reaction
https://orcid.org/http://orcid.org/0000-0001-7772-8583
https://orcid.org/http://orcid.org/0000-0002-3211-9183
https://orcid.org/http://orcid.org/0000-0002-8099-9496
https://orcid.org/http://orcid.org/0000-0003-0912-8687
https://orcid.org/http://orcid.org/0000-0003-4122-6391
The effect of CexMg1–xAl2O4 spinel nanopowders on the textural, acidic, and catalytic properties displayed by HZSM-5 zeolite in the toluene disproportionation reaction was examined. Modification with CexMg1–xAl2O4 nanopowders caused a decrease in the concentration of strong protonic sites, formation of new stronger aprotonic sites, and a decrease in the pore volume of HZSM-5, thereby creating more steric hindrance to diffusion of o- and m-xylenes and enhancing para-selectivity of the catalyst. The possibility of achieving high p-xylene selectivity of 65.7–77.3% via toluene disproportionation over the optimal 5% Сe0.1Mg0.9Al2O4/HZSM-5 catalyst at toluene conversion of 20.3–29.7% was demonstrated.
Evaluation of the Properties of ZSM-5 Type Zeolites Modified with CexMg1–xAl2O4 Nanopowders in the Toluene Disproportionation Reaction
https://orcid.org/http://orcid.org/0000-0001-7772-8583
https://orcid.org/http://orcid.org/0000-0002-3211-9183
https://orcid.org/http://orcid.org/0000-0002-8099-9496
https://orcid.org/http://orcid.org/0000-0003-0912-8687
https://orcid.org/http://orcid.org/0000-0003-4122-6391
The effect of CexMg1–xAl2O4 spinel nanopowders on the textural, acidic, and catalytic properties displayed by HZSM-5 zeolite in the toluene disproportionation reaction was examined. Modification with CexMg1–xAl2O4 nanopowders caused a decrease in the concentration of strong protonic sites, formation of new stronger aprotonic sites, and a decrease in the pore volume of HZSM-5, thereby creating more steric hindrance to diffusion of o- and m-xylenes and enhancing para-selectivity of the catalyst. The possibility of achieving high p-xylene selectivity of 65.7–77.3% via toluene disproportionation over the optimal 5% Сe0.1Mg0.9Al2O4/HZSM-5 catalyst at toluene conversion of 20.3–29.7% was demonstrated.
Evaluation of the Properties of ZSM-5 Type Zeolites Modified with CexMg1–xAl2O4 Nanopowders in the Toluene Disproportionation Reaction
Pet. Chem.
Kerimli, F. Sh. (author) / Ilyasli, T. M. (author) / Mammadov, S. E. (author) / Akhmedova, N. F. (author) / Mammadov, E. S. (author) / Makmudova, N. I. (author) / Akhmedov, E. I. (author)
Petroleum Chemistry ; 61 ; 895-900
2021-08-01
6 pages
Article (Journal)
Electronic Resource
English
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