Effect of metal loading on activity, selectivity and deactivation behavior of Pd/silica-alumina catalysts in the hydroconversion of n-hexadecane [Elektronisk resurs]
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Regali, Francesco, 1971- (författare)
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Liotta, Leonarda Francesca (författare)
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Venezia, Anna Maria (författare)
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Montes, Vicente (författare)
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Boutonnet, Magali (författare)
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Järås, Sven (författare)
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KTH Skolan för kemivetenskap (CHE) (utgivare)
- Publicerad: 2014
- Engelska.
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Ingår i: Catalysis Today. - 0920-5861. ; 223, 87-96
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Sammanfattning
Ämnesord
Stäng
- Bifunctional catalysts consisting of palladium on amorphous silica-alumina with different metal loadings (0 wt% to 1.2 wt%) were compared in the hydrocracking/hydroisomerization of n-hexadecane. The reaction conditions were: pressure = 30 bar; temperature = 310 degrees C; hydrogen-to-hexadecane feed molar ratio = 10. Metal loading was found to have a remarkable influence on the initial deactivation rate, which could be related to the formation of carbonaceous deposits. The dependence of activity on the metal-acid site ratio was the typical one for bifunctional hydrocracking where, after reaching a threshold value, the catalytic activity does not appreciably increase with increasing metal loading. On the Pd-containing catalysts, the methane space-time-yield showed a strong dependence on conversion, but no clear relationship with metal surface area, indicating that the formation of methane might not proceed by purely metal-catalyzed hydrogenolysis.
Ämnesord
- Engineering and Technology (hsv)
- Chemical Engineering (hsv)
- Other Chemical Engineering (hsv)
- Teknik och teknologier (hsv)
- Kemiteknik (hsv)
- Annan kemiteknik (hsv)
Indexterm och SAB-rubrik
- Hydrocracking
- Hydroisomerization
- Hexadecane
- Palladium
- Silica-alumina
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