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Enhancing Hydrocracking Catalyst Performance and Lifetime through Surfactant-Templated Mesoporosity in Pt/HUSY
N F L de Paula1, H M Mesa1, J M Ortigosa2
1Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, 149, Rio de Janeiro 21941-909, Brazil.
Energy & Fuels : an American Chemical Society Journal
|January 15, 2026
Summary
Hierarchical Pt/HUSY catalysts with mesoporosity improve hydrocracking of long-chain hydrocarbons. This surfactant-templating strategy enhances molecular diffusion, boosting activity and catalyst stability by reducing coke formation.
Area of Science:
- Catalysis
- Materials Science
- Chemical Engineering
Background:
- Hydrocracking processes face challenges with mass transport limitations for bulky hydrocarbons.
- Zeolite catalysts, while effective, often suffer from diffusion constraints due to their microporous structure.
Purpose of the Study:
- To synthesize hierarchical Pt/HUSY catalysts using a surfactant-templating strategy.
- To enhance molecular diffusion and access to acid sites in zeolite catalysts.
- To improve catalytic performance and stability in hydrocracking.
Main Methods:
- Surfactant-templating strategy to create hierarchical Pt/HUSY catalysts.
- Characterization of catalyst porosity, crystallinity, and acidity.
- Catalytic testing of hexadecane cracking activity and product selectivity.
Main Results:
- Hierarchical catalysts exhibited significantly enhanced hexadecane cracking activity, especially with longer surfactant treatments.
- Improved molecular diffusion and access to acid sites were observed.
- Surfactant-templated catalysts showed reduced deactivation and higher stability due to prevented coke accumulation.
Conclusions:
- Surfactant-templated mesoporosity is an effective strategy for enhancing zeolite catalyst performance and lifetime.
- Hierarchical Pt/HUSY catalysts overcome diffusion limitations in hydrocracking bulky hydrocarbons.
- The developed catalysts offer improved efficiency and stability for industrial hydrocarbon conversion.
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