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Título : Impact of lanthanum ion exchange and steaming dealumination on middle distillate production using nanosized Y zeolite catalysts in hydrocracking reactions
Autor : Mendoza Merlano, Carlos Javier
Manrique Hernández, Alba Cecilia
Echavarría Isaza, Adriana
metadata.dc.subject.*: Catalizadores
Catalysts
Zeolitas
Zeolites
Lantano
Lanthanum
Reacciones químicas
Chemical reactions
Hidrocarburos
Hydrocarbons
Craqueo
Cracking process
Hidrogenación
Hydrogenation
Fecha de publicación : 2024
Editorial : Royal Society of Chemistry
Citación : Mendoza, Carlos & Manrique, Cecilia & Echavarria, Adriana. (2024). Impact of lanthanum ion exchange and steaming dealumination on middle distillate production using nanosized Y zeolite catalysts in hydrocracking reactions. RSC Advances. 14. 26760-26774. 10.1039/d4ra04664a.
Resumen : ABSTRACT: In the field of hydrocracking reactions, achieving optimal middle distillate yields remains a persistent challenge with commercially available zeolite Y catalysts. This limitation is attributed to challenges related to diffusion constraints within the catalyst. In response, we present a promising solution not only to these problems but also to the challenges encountered in nanosized Y zeolites when attempting to generate acidic sites within their structure and when analyzing their performance in vacuum gas oil hydrocracking. NiMo catalysts based on nanosized Y zeolites with different crystal sizes exchanged with lanthanum, effectively address diffusion issues and significantly enhance catalyst performance compared to dealuminated nanosized and commercial Y zeolite under the same reaction conditions. The catalysts were characterized by TGA, ICP-OES, XPS, N2 physisorption, FT-IR for pyridine acidity, TEM-mapping, and the 3-methyl thiophene reaction to test the hydrogenating capacity. Surface analysis and microscopy showed greater porosity in the catalysts with smaller zeolites and different arrangements of their components. The catalysts based on steamed protonated nanosized Y zeolites with a larger size and lanthanide nanosized Y zeolite with a smaller size yielded more middle distillates. Research provides a comprehensive analysis, providing a correlation between the catalytic performance and the size of the nanosized Y zeolite.
metadata.dc.identifier.eissn: 2046-2069
metadata.dc.identifier.doi: 10.1039/d4ra04664a
Aparece en las colecciones: Artículos de Revista en Ciencias Exactas y Naturales

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