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Open AccessArticle

Preparation for Pt-Loaded Zeolite Catalysts Using w/o Microemulsion and Their Hydrocracking Behaviors on Fischer-Tropsch Product

Biomass Refinery Research Center, National Institute of Advanced Industrial Science and Technology, Kagamiyama 3-11-32, Higashihiroshima, Hiroshima 739-0046, Japan
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Academic Editors: Magali Boutonnet and Margarita Sanchez-Dominguez
Catalysts 2015, 5(1), 88-105; https://doi.org/10.3390/catal5010088
Received: 3 September 2014 / Revised: 9 December 2014 / Accepted: 26 January 2015 / Published: 6 February 2015
(This article belongs to the Special Issue Synthesis of Nanostructured Catalytic Materials from Microemulsions)
Pt-loaded β-type zeolite catalysts with constant Pt content (0.11 wt.%) and similar pore structure were prepared using a water-in-oil (w/o) microemulsion. The effect of Pt particle synthesis conditions using microemulsion (a type of Pt complex-forming agents and the molar ratio of complex-forming agent to Pt4+) on loaded Pt particle size was investigated. The Pt particle size of the Pt catalyst using tetraethylammonium chloride (TEAC) as a complex-forming agent with the molar TEAC/Pt ratio 10 was the minimum value (3.8 nm), and was much smaller than that (6.7 nm) prepared by the impregnation method. The utilization of the complex-forming agent of which hydrophobic groups occupied a small volume and the appropriate complex-forming agent/Pt ratio were favorable for synthesis of small Pt particles. The effect of loaded Pt particle size on the hydrocracking of the Fischer-Tropsch (FT) product was investigated using the Pt-loaded zeolite catalysts at 250 °C with an initial H2 pressure of 0.5 MPa, and reaction time of 1 h. The Pt catalyst with a Pt particle size of 4.2 nm prepared using the microemulsion exhibited the maximum corresponding jet fuel yield (30.0%), which was higher than that of the impregnated catalyst. View Full-Text
Keywords: microemulsion; Pt; zeolite; hydrocracking; jet fuel microemulsion; Pt; zeolite; hydrocracking; jet fuel
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Hanaoka, T.; Miyazawa, T.; Shimura, K.; Hirata, S. Preparation for Pt-Loaded Zeolite Catalysts Using w/o Microemulsion and Their Hydrocracking Behaviors on Fischer-Tropsch Product. Catalysts 2015, 5, 88-105.

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