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Insights in supported rhenium carbide catalysts for hydroconversion of lignin-derived compounds

AuthorsBlanco, Elodie; Dongil, Ana Belén ; García Fierro, José Luis ; Escalona, Néstor
KeywordsRhenium carbide
Biomass conversion
Issue Date2020
PublisherElsevier BV
CitationApplied Catalysis A: General 599 (2020)
Abstract[EN] Rhenium supported over activated carbon (AC) was carburized under different temperatures (from 500 to 700 °C) under a mixture of H/CH (75/25). Resulting catalysts were characterized by Nsorption, CO chemisorption, temperature programed reduction (TPR), ammonia temperature programed desorption (TPD-NH), STEM, and XPS and catalytic properties were measured in a batch reactor at 350 °C, 5.0 MPa for the hydrodeoxygenation (HDO) of guaiacol. Results have shown that Rhenium was gradually reduced and carburized upon increasing the temperature. From 650 °C, a ReC phase was obtained and transformed into ReC at 700 °C. ReC was the most active phase obtained and maximum yield in benzene of 51% was reached at complete conversion. ReC phase showed to inhibit the hydrogenolysis of phenol into benzene.
Publisher version (URL)http://dx.doi.org/10.1016/j.apcata.2020.117600
Identifiersdoi: 10.1016/j.apcata.2020.117600
issn: 0926-860X
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