Comparative assessment of Mo/Ti and Mo/C catalysts for phenol hydrodeoxygenation: Influence of support and hydrogen treatment

IF 5.2 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today Pub Date : 2025-03-24 DOI:10.1016/j.cattod.2025.115291

Débora G.B. Dionizio , Priscilla M. de Souza , Cristiane A. Henriques , Gilles Berhault

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引用次数: 0

Abstract

Even if catalytic hydrodeoxygenation (HDO) is a promising approach for converting bio-oil into high-value products, this reaction process still faces challenges related to the inherent high hydrogen consumption needed to perform it. Therefore, the hydrodeoxygenation (HDO) of phenol was herein studied in the gas phase using molybdenum catalysts supported on titania (Mo/Ti) and activated carbon (Mo/C) at atmospheric pressure in order to evaluate the consequences of hydrogen treatment on the catalytic properties of these Mo-based HDO catalysts. Samples were characterized by ICP-OES, XRD, XPS, Raman, TPR, H₂O-TPD, and oxygen chemisorption, and the physicochemical properties were compared with their catalytic performances. Under the studied conditions, the support type and the hydrogen treatment cause changes in active species (MoO₂ and MoO₃), promoting different catalyst behaviors. However, all the catalysts studied were 100 % selective to benzene, indicating that the molybdenum active phase did not influence the selectivity of the reaction.

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来源期刊

Catalysis Today 化学-工程：化工

CiteScore

11.50

自引率

3.80%

发文量

573

审稿时长

2.9 months

期刊介绍： Catalysis Today focuses on the rapid publication of original invited papers devoted to currently important topics in catalysis and related subjects. The journal only publishes special issues (Proposing a Catalysis Today Special Issue), each of which is supervised by Guest Editors who recruit individual papers and oversee the peer review process. Catalysis Today offers researchers in the field of catalysis in-depth overviews of topical issues. Both fundamental and applied aspects of catalysis are covered. Subjects such as catalysis of immobilized organometallic and biocatalytic systems are welcome. Subjects related to catalysis such as experimental techniques, adsorption, process technology, synthesis, in situ characterization, computational, theoretical modeling, imaging and others are included if there is a clear relationship to catalysis.