Synergistic interaction of metal–acid sites for phenol hydrodeoxygenation over bifunctional Ag/TiO2 nanocatalyst

Ng, Andrew Kay Lup and Abnisa, Faisal and Daud, Wan Mohd Ashri Wan and Aroua, Mohamed Kheireddine (2019) Synergistic interaction of metal–acid sites for phenol hydrodeoxygenation over bifunctional Ag/TiO2 nanocatalyst. Chinese Journal of Chemical Engineering, 27 (2). pp. 349-361. ISSN 1004-9541, DOI

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The use of silver metal for hydrodeoxygenation (HDO) applications is scarce and different studies have indicated of its varying HDO activity. Several computational studies have reported of silver having almost zero turnover frequency for HDO owing to its high C–O bond breaking energy barrier and low carbon and oxygen binding energies. Herein this work, titania supported silver catalysts were synthesized and firstly used to examine its phenol HDO activity via experimental reaction runs. BET, XRD, FESEM, TEM, EDX, ICP–OES, Pyridine-FTIR, NH 3 -TPD and H 2 -TPD analyses were done to investigate its physicochemical properties. Phenomena of hydrogen spillover and metal–acid site synergy were examined in this study. With the aid of TiO 2 reducible support, hydrogen spillover and metal–acid site interactions were observed to a certain extent but were not as superior as other Pt, Pd, Ni-based catalysts used in other HDO studies. The experimental findings showed that Ag/TiO 2 catalyst has mediocre phenol conversion but high benzene selectivity which confirms the explanation from other computational studies. © 2018 Elsevier B.V.

Item Type: Article
Funders: GSP-MOHE, University of Malaya: fully funding this study through the project number “ MO008-2015, Ministry of Higher Education of Malaysia (MOHE): MyBrain15 (MyPhD) program, IPPP for project “PG081-2016A”
Uncontrolled Keywords: Silver based catalyst; Physicochemical properties; Hydrogen spillover; Metal–acid sites; Hydrodeoxygenation
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 17 Apr 2020 04:27
Last Modified: 17 Apr 2020 04:27

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