Fluorene hydrocracking over bifunctional platinum catalysts in a high-pressure simultaneous thermal analyzer

[Display omitted] •Simultaneous thermal analysis of a hydrocracking reaction at 50 bar H2.•The lower the framework Si/Al, the lower the starting hydrocracking reaction temperature.•Fluorene hydrogenation on Pt/zeolites takes place at lower temperatures than on non-aluminic materials. Fluorene hydroc...

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Bibliographic Details
Published in:Applied catalysis. A, General General, 2021-04, Vol.616, p.118097, Article 118097
Main Authors: Martinez-Saavedra, Jose-Mateo, Tavera-Mendez, Cindy-Ly, Sandoval-Diaz, Luis-Ernesto, Pérez-Martínez, David de J., Rodriguez-Niño, Gerardo, Trujillo, Carlos-Alexander
Format: Article
Language:English
Subjects:
Aluminum
Aromatic compounds
Enthalpy
Fluorene
High pressure thermal analysis
Hydrocracking
Hydrocracking catalysts
Hydrogenation
Isomerization
Perhydrofluorene
Platinum
Platinum reduction
Silicon dioxide
USY zeolites
Zeolites
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Summary:[Display omitted] •Simultaneous thermal analysis of a hydrocracking reaction at 50 bar H2.•The lower the framework Si/Al, the lower the starting hydrocracking reaction temperature.•Fluorene hydrogenation on Pt/zeolites takes place at lower temperatures than on non-aluminic materials. Fluorene hydrocracking was studied on Platinum loaded SiO2 (Aerosil), MCM-41, and five USY commercial zeolites with different Si/Al molar ratios in a High-Pressure Simultaneous Thermal Analyzer (HP-STA) at 50 bar of H2. Platinum Aerosil and MCM-41 require higher temperatures for aromatic ring hydrogenation than Pt/zeolites. Hydrogenation of the two aromatic rings occurs completely before isomerization and cracking begin on zeolites. The lower the zeolites' Si/Al framework, the lower the peak temperature of the hydrocracking reaction. Hydrocracking enthalpy shows a positive correlation with strong Brønsted acid sites concentration measured by pyridine adsorption.
ISSN:0926-860X
1873-3875
DOI:10.1016/j.apcata.2021.118097