Journal of Catalysis, volume 418, pages 203-215
Origin of strong metal-support interactions between Pt and anatase TiO2 facets for hydrodeoxygenation of m-cresol on Pt/TiO2 catalysts
3
Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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Publication type: Journal Article
Publication date: 2023-02-01
Journal:
Journal of Catalysis
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 7.3
ISSN: 00219517, 10902694
Catalysis
Physical and Theoretical Chemistry
Abstract
Metal/reducible metal oxide catalysts are widely used in hydrodeoxygenation (HDO) reactions for upgrading bio-oil to produce chemicals and fuel components. Under such strong reducing condition, the strong metal-support interaction (SMSI) should take place, however, few work has been devoted to understand the effect of facet of metal oxide on the SMSI and its consequence on HDO performance. Herein, Pt supported on anatase TiO2 with varying dominative exposed facets of (1 0 1), (1 0 0) and (0 0 1) were prepared and tested in HDO of m-cresol at 350 °C and atmosphere H2 pressure. The degree of SMSI of Pt/TiO2 is strongly dependent on the facet of TiO2 when reduced at 350 °C, and the degree of encapsulation decreases following the order of Pt/TiO2-100 > Pt/TiO2-001 > Pt/TiO2-101. The encapsulation correlates well with the reduction degree of TiO2 and the location of oxygen vacancy, which are resulted from varied oxygen vacancy formation and anisotropic diffusion rates in different facets. The intermediate SMSI is achieved on TiO2-001, which creates the maximal density of Pt-Ov-Ti3+ sites at the interfacial perimeter of TiOx/Pt for deoxygenation of m-cresol, resulting in the highest reaction rate and turnover frequency (TOF) while the lowest activation energy (Ea). In contrast, the maximum SMSI on TiO2-100 leads to the lowest deoxygenation rate while the highest Ea. This work provides insight into facet dependent SMSI of Pt/TiO2 and indicates the HDO activity can be finely tailored by tuning the facet of TiO2.
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Wu X. et al. Origin of strong metal-support interactions between Pt and anatase TiO2 facets for hydrodeoxygenation of m-cresol on Pt/TiO2 catalysts // Journal of Catalysis. 2023. Vol. 418. pp. 203-215.
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Wu X., Liu C. J., Hua W., Ge Q., Zhu X. Origin of strong metal-support interactions between Pt and anatase TiO2 facets for hydrodeoxygenation of m-cresol on Pt/TiO2 catalysts // Journal of Catalysis. 2023. Vol. 418. pp. 203-215.
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TY - JOUR
DO - 10.1016/j.jcat.2023.01.023
UR - https://doi.org/10.1016/j.jcat.2023.01.023
TI - Origin of strong metal-support interactions between Pt and anatase TiO2 facets for hydrodeoxygenation of m-cresol on Pt/TiO2 catalysts
T2 - Journal of Catalysis
AU - Wu, Xiaoxia
AU - Liu, Chang Jun
AU - Hua, Wei
AU - Ge, Qingfeng
AU - Zhu, Xinli
PY - 2023
DA - 2023/02/01 00:00:00
PB - Elsevier
SP - 203-215
VL - 418
SN - 0021-9517
SN - 1090-2694
ER -
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@article{2023_Wu,
author = {Xiaoxia Wu and Chang Jun Liu and Wei Hua and Qingfeng Ge and Xinli Zhu},
title = {Origin of strong metal-support interactions between Pt and anatase TiO2 facets for hydrodeoxygenation of m-cresol on Pt/TiO2 catalysts},
journal = {Journal of Catalysis},
year = {2023},
volume = {418},
publisher = {Elsevier},
month = {feb},
url = {https://doi.org/10.1016/j.jcat.2023.01.023},
pages = {203--215},
doi = {10.1016/j.jcat.2023.01.023}
}