Abstract
Unsupported NiWS catalysts formed in situ by thermal decomposition of the synthesized sulfonium thiosalt were studied in hydrodeoxygenation of diphenyl ether. The influence of the reaction temperature and time, H2 pressure, and gravimetric water content of the system on the catalyst activity and reaction product composition was studied. The diphenyl ether conversion reaches 100% already in 2 h after the start of the process and at an H2 pressure of 1 MPa. The catalysts obtained were characterized by high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy. The water addition to the system does not noticeably influence the activity of the formed catalysts but leads to changes in the morphology of sulfide particles and phase composition of the surface layer of the catalysts.
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ACKNOWLEDGMENTS
The study was performed using the equipment of the Center for Shared Use Analytical Center for Problems of Deep Oil Refining and Petroleum Chemistry, Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences.
Funding
The study was made within the framework of the government assignment for the Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences.
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Mamian, L.G., Kuchinskaya, T.S. & Knyazeva, M.I. Activity of In situ Obtained NiWS Catalysts in Hydrodeoxygenation: Effect of Water Addition. Pet. Chem. 62, 1291–1299 (2022). https://doi.org/10.1134/S0965544122100127
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DOI: https://doi.org/10.1134/S0965544122100127