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Catalytic Cracking of n-Dodecane over P-Modified MFI Zeolites Synthesized by Steam-Assisted Conversion: Effect of SiO2/Al2O3 Ratio
https://orcid.org/https://orcid.org/0000-0001-5032-6381
https://orcid.org/https://orcid.org/0000-0002-8851-2013
https://orcid.org/https://orcid.org/0000-0002-2755-7998
https://orcid.org/http://orcid.org/0000-0002-8742-2892
The paper describes the physicochemical characterization and catalytic testing of MFI zeolites with different SiO2/Al2O3 ratios synthesized by steam-assisted crystallization (SAC) and modified with phosphorus (4 wt % loading). Their physicochemical properties were characterized by X-ray diffraction analysis, X-ray fluorescence analysis, scanning electron microscopy, low-temperature nitrogen adsorption, ammonia temperature-programmed desorption, and MAS NMR spectroscopy. Both the parent and P-modified MFI zeolites were then subjected to catalytic tests in cracking of n-dodecane. The yield of light olefins was enhanced only in two cases: when MFI zeolites with SiO2/Al2O3 ratios of 30–70 were modified with 4 wt % phosphorus and when parent MFI zeolites with SiO2/Al2O3 ratios of 100–220 were used. It was further found that, in terms of catalytic performance in the cracking of n-dodecane, the MFI zeolites synthesized by SAC were comparable to a commercially available MFI zeolite synthesized under hydrothermal conditions. Moreover, in contrast to the commercially available zeolite, phosphorus modification of the SAC-synthesized zeolite enhanced the yield of C2–C4 olefins.
Catalytic Cracking of n-Dodecane over P-Modified MFI Zeolites Synthesized by Steam-Assisted Conversion: Effect of SiO2/Al2O3 Ratio
https://orcid.org/https://orcid.org/0000-0001-5032-6381
https://orcid.org/https://orcid.org/0000-0002-8851-2013
https://orcid.org/https://orcid.org/0000-0002-2755-7998
https://orcid.org/http://orcid.org/0000-0002-8742-2892
The paper describes the physicochemical characterization and catalytic testing of MFI zeolites with different SiO2/Al2O3 ratios synthesized by steam-assisted crystallization (SAC) and modified with phosphorus (4 wt % loading). Their physicochemical properties were characterized by X-ray diffraction analysis, X-ray fluorescence analysis, scanning electron microscopy, low-temperature nitrogen adsorption, ammonia temperature-programmed desorption, and MAS NMR spectroscopy. Both the parent and P-modified MFI zeolites were then subjected to catalytic tests in cracking of n-dodecane. The yield of light olefins was enhanced only in two cases: when MFI zeolites with SiO2/Al2O3 ratios of 30–70 were modified with 4 wt % phosphorus and when parent MFI zeolites with SiO2/Al2O3 ratios of 100–220 were used. It was further found that, in terms of catalytic performance in the cracking of n-dodecane, the MFI zeolites synthesized by SAC were comparable to a commercially available MFI zeolite synthesized under hydrothermal conditions. Moreover, in contrast to the commercially available zeolite, phosphorus modification of the SAC-synthesized zeolite enhanced the yield of C2–C4 olefins.
Catalytic Cracking of n-Dodecane over P-Modified MFI Zeolites Synthesized by Steam-Assisted Conversion: Effect of SiO2/Al2O3 Ratio
https://orcid.org/https://orcid.org/0000-0001-5032-6381
https://orcid.org/https://orcid.org/0000-0002-8851-2013
https://orcid.org/https://orcid.org/0000-0002-2755-7998
https://orcid.org/http://orcid.org/0000-0002-8742-2892
The paper describes the physicochemical characterization and catalytic testing of MFI zeolites with different SiO2/Al2O3 ratios synthesized by steam-assisted crystallization (SAC) and modified with phosphorus (4 wt % loading). Their physicochemical properties were characterized by X-ray diffraction analysis, X-ray fluorescence analysis, scanning electron microscopy, low-temperature nitrogen adsorption, ammonia temperature-programmed desorption, and MAS NMR spectroscopy. Both the parent and P-modified MFI zeolites were then subjected to catalytic tests in cracking of n-dodecane. The yield of light olefins was enhanced only in two cases: when MFI zeolites with SiO2/Al2O3 ratios of 30–70 were modified with 4 wt % phosphorus and when parent MFI zeolites with SiO2/Al2O3 ratios of 100–220 were used. It was further found that, in terms of catalytic performance in the cracking of n-dodecane, the MFI zeolites synthesized by SAC were comparable to a commercially available MFI zeolite synthesized under hydrothermal conditions. Moreover, in contrast to the commercially available zeolite, phosphorus modification of the SAC-synthesized zeolite enhanced the yield of C2–C4 olefins.
Catalytic Cracking of n-Dodecane over P-Modified MFI Zeolites Synthesized by Steam-Assisted Conversion: Effect of SiO2/Al2O3 Ratio
Pet. Chem.
Bachurina, D. O. (Autor:in) / Giliazutdinova, A. S. (Autor:in) / Potapenko, O. V. (Autor:in) / Ivanova, I. I. (Autor:in)
Petroleum Chemistry ; 64 ; 1096-1105
01.09.2024
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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