期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 60, 期 51, 页码 18707-18721出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.1c02596
关键词
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资金
- Spanish Ministry of Science, Innovation and Universities [PID2019-111219RB-100]
- Regional Government of Madrid through the project BIOTRES-CM [P2018/EMT-4344]
The positive role of pentacoordinated Al-V sites in the catalyst behavior was evidenced in the vapor phase hydrodeoxygenation (HDO) of phenol. The USY zeolite was more efficient than ZSM-5, and the superior activity of Ir-Pt/USY was attributed to the cumulative effects of various factors working in synergy.
The positive role of pentacoordinated Al-V sites on the catalyst behavior was evidenced in the vapor phase hydrodeoxygenation (HDO) of phenol over Ir-, Pt-, and Pt-Ir catalysts supported on USY and ZSM-5. All catalysts showed bifunctionality in the HDO reaction at 310 degrees C and 30 bar H-2, the more acidic USY zeolite being more efficient as a support than ZSM-5, and the metal function decreasing in the order Ir-Pt > Pt >> Ir. The superior activity of Ir-Pt/USY was attributed to the cumulative effects of the support acidity, the smaller zeolite crystal size, the higher amount of unsaturated Al-V sites, and the synergy between acid and metal sites. The promotion of Pt with Ir improved the reducibility of platinum, the catalyst's overall oxophilicity, and its active phase dispersion.
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