Abstract
The authors study the effect of the type of zeolite (SAPO-11, ZSM-22, ZSM-23, and ZSM-12) in a support (ratio zeolite : Al2О3 = 30 : 70) on the physicochemical properties of Pt/Al2O3-zeolite catalysts and the composition of products from the hydrodeoxygenation of sunflower oil on them. The possibility of the complete hydrodeoxygenation of sunflower oil at temperatures of 320–350°C, a pressure of 4 MPa, and a weight hourly space velocity (WHSV) of 1 h−1 is shown with 75–82% yields of liquid products. The fraction of iso-alkanes and the yield of direct hydrodeoxygenation products grow along with the concentration of Brønsted acid sites in a catalyst in the order 1%Pt/Al2O3-ZSM-22 < 1%Pt/Al2O3-ZSM-12 < 1%Pt/Al2O3-ZSM-23 < 1%Pt/Al2O3-SAPO-11.
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Notes
The zeolite module is given in parentheses, according to the certificate of the Zeolyst International Company (United States).
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ACKNOWLEDGMENTS
The authors are grateful to engineers L.A. Buluchevskaya and E.N. Kudrya, junior researcher I.V. Muromtsev, researchers R.R. Izmailov and A.V. Babenko, and first-category electrical engineer S.N. Evdokimov for their work in studying the catalysts and the composition of liquid products in the hydrodeoxygenation of sunflower oil.
Our physicochemical studies were performed on equipment at the Boreskov Institute’s National Center for the Study of Catalysts.
Funding
This study was supported by the Russian Federation Ministry of Science and Higher Education within the governmental assignment for Boreskov Institute of Catalysis (project AAAA-A21-121011890075-1).
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Translated by E. Glushachenkova
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Nepomnyashchii, A.A., Saibulina, E.R., Buluchevskiy, E.A. et al. Combined Deoxygenation and Isomerization of Sunflower Oil Fatty Acid Triglycerides on Pt/Al2O3-Zeolite Catalysts. Catal. Ind. 16, 170–177 (2024). https://doi.org/10.1134/S2070050424700077
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DOI: https://doi.org/10.1134/S2070050424700077