Nanostructured Ru(2 wt%)/PrxCe1−xO2-δ (x = 0, 0.12 and 0.25) materials for hydrodeoxygenation of guaiacol: Influence of oxygen vacancies on reactivity

Muhammad Ridwan; Adid Adep Dwiatmoko; Jeong Myeong Ha; Chang Won Yoon

doi:10.1016/j.cattod.2023.114338

Nanostructured Ru(2 wt%)/Pr_xCe_1−xO_2-δ (x = 0, 0.12 and 0.25) materials for hydrodeoxygenation of guaiacol: Influence of oxygen vacancies on reactivity

Muhammad Ridwan, Adid Adep Dwiatmoko, Jeong Myeong Ha, Chang Won Yoon

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

To assess the influence of catalyst morphology and dopant on catalytic activity for the hydrodeoxygenation (HDO) of guaiacol, four Ru catalysts—Ru(2 wt%)/CeO₂ irregular nanoparticles (Ru-1), Ru(2 wt%)/CeO₂ nanocubes (Ru-2), Ru(2 wt%)/Ce_0.88Pr_0.12O_2-δ nanocubes (Ru-3) and Ru(2 wt%)/Ce_0.75Pr_0.25O_2-δ nanocubes (Ru-4) were prepared and characterized using transmission electron microscopy, X-ray diffraction analysis, Raman spectroscopy, hydrogen temperature-programmed reduction, X-ray photoelectron spectroscopy, and volumetric oxygen titration. The shape-dependent catalytic activities for the HDO of guaiacol over Ru-1 and Ru-2 were initially determined, presenting that Ru-2 exhibited higher activity than Ru-1. In addition, the effect of Pr doping into CeO₂ on the desired activity was examined using Ru-2, Ru-3 and Ru-4, demonstrating that there is an optimal Pr content that maximizes the activity. The results obtained by the analytical methods with additional oxygen vacancy titration indicate that the activities of the catalysts are strongly correlated with the normalized oxygen vacancy densities.

Original language	English
Article number	114338
Journal	Catalysis Today
Volume	425
DOIs	https://doi.org/10.1016/j.cattod.2023.114338
Publication status	Published - 1 Jan 2024

Keywords

CeO nanocube
Guaiacol
Hydrodeoxygenation
Oxygen vacancy
Pr-doped CeO
Ru catalyst

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10.1016/j.cattod.2023.114338

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@article{2bee15d6069c4475a571ad341f91c040,

title = "Nanostructured Ru(2 wt%)/PrxCe1−xO2-δ (x = 0, 0.12 and 0.25) materials for hydrodeoxygenation of guaiacol: Influence of oxygen vacancies on reactivity",

abstract = "To assess the influence of catalyst morphology and dopant on catalytic activity for the hydrodeoxygenation (HDO) of guaiacol, four Ru catalysts—Ru(2 wt%)/CeO2 irregular nanoparticles (Ru-1), Ru(2 wt%)/CeO2 nanocubes (Ru-2), Ru(2 wt%)/Ce0.88Pr0.12O2-δ nanocubes (Ru-3) and Ru(2 wt%)/Ce0.75Pr0.25O2-δ nanocubes (Ru-4) were prepared and characterized using transmission electron microscopy, X-ray diffraction analysis, Raman spectroscopy, hydrogen temperature-programmed reduction, X-ray photoelectron spectroscopy, and volumetric oxygen titration. The shape-dependent catalytic activities for the HDO of guaiacol over Ru-1 and Ru-2 were initially determined, presenting that Ru-2 exhibited higher activity than Ru-1. In addition, the effect of Pr doping into CeO2 on the desired activity was examined using Ru-2, Ru-3 and Ru-4, demonstrating that there is an optimal Pr content that maximizes the activity. The results obtained by the analytical methods with additional oxygen vacancy titration indicate that the activities of the catalysts are strongly correlated with the normalized oxygen vacancy densities.",

keywords = "CeO nanocube, Guaiacol, Hydrodeoxygenation, Oxygen vacancy, Pr-doped CeO, Ru catalyst",

author = "Muhammad Ridwan and Dwiatmoko, {Adid Adep} and Ha, {Jeong Myeong} and Yoon, {Chang Won}",

note = "Funding Information: The research was supported financially by the Flagship Program ( 2E30201 ) through the Korea Institute of Science and Technology . Also, C.W.Yoon acknowledges the financial support from the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) ( NRF-2023R1A2C2007558 ). Muhammad Ridwan would like to acknowledge Universitas Indonesia for the support through PUTI Grant with contract number NKB-482/UN2.RST/HKP.05.00/2023 . Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2024",

month = jan,

day = "1",

doi = "10.1016/j.cattod.2023.114338",

language = "English",

volume = "425",

journal = "Catalysis Today",

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T1 - Nanostructured Ru(2 wt%)/PrxCe1−xO2-δ (x = 0, 0.12 and 0.25) materials for hydrodeoxygenation of guaiacol

T2 - Influence of oxygen vacancies on reactivity

AU - Ridwan, Muhammad

AU - Dwiatmoko, Adid Adep

AU - Ha, Jeong Myeong

AU - Yoon, Chang Won

N1 - Funding Information: The research was supported financially by the Flagship Program ( 2E30201 ) through the Korea Institute of Science and Technology . Also, C.W.Yoon acknowledges the financial support from the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) ( NRF-2023R1A2C2007558 ). Muhammad Ridwan would like to acknowledge Universitas Indonesia for the support through PUTI Grant with contract number NKB-482/UN2.RST/HKP.05.00/2023 . Publisher Copyright: © 2023 Elsevier B.V.

PY - 2024/1/1

Y1 - 2024/1/1

N2 - To assess the influence of catalyst morphology and dopant on catalytic activity for the hydrodeoxygenation (HDO) of guaiacol, four Ru catalysts—Ru(2 wt%)/CeO2 irregular nanoparticles (Ru-1), Ru(2 wt%)/CeO2 nanocubes (Ru-2), Ru(2 wt%)/Ce0.88Pr0.12O2-δ nanocubes (Ru-3) and Ru(2 wt%)/Ce0.75Pr0.25O2-δ nanocubes (Ru-4) were prepared and characterized using transmission electron microscopy, X-ray diffraction analysis, Raman spectroscopy, hydrogen temperature-programmed reduction, X-ray photoelectron spectroscopy, and volumetric oxygen titration. The shape-dependent catalytic activities for the HDO of guaiacol over Ru-1 and Ru-2 were initially determined, presenting that Ru-2 exhibited higher activity than Ru-1. In addition, the effect of Pr doping into CeO2 on the desired activity was examined using Ru-2, Ru-3 and Ru-4, demonstrating that there is an optimal Pr content that maximizes the activity. The results obtained by the analytical methods with additional oxygen vacancy titration indicate that the activities of the catalysts are strongly correlated with the normalized oxygen vacancy densities.

AB - To assess the influence of catalyst morphology and dopant on catalytic activity for the hydrodeoxygenation (HDO) of guaiacol, four Ru catalysts—Ru(2 wt%)/CeO2 irregular nanoparticles (Ru-1), Ru(2 wt%)/CeO2 nanocubes (Ru-2), Ru(2 wt%)/Ce0.88Pr0.12O2-δ nanocubes (Ru-3) and Ru(2 wt%)/Ce0.75Pr0.25O2-δ nanocubes (Ru-4) were prepared and characterized using transmission electron microscopy, X-ray diffraction analysis, Raman spectroscopy, hydrogen temperature-programmed reduction, X-ray photoelectron spectroscopy, and volumetric oxygen titration. The shape-dependent catalytic activities for the HDO of guaiacol over Ru-1 and Ru-2 were initially determined, presenting that Ru-2 exhibited higher activity than Ru-1. In addition, the effect of Pr doping into CeO2 on the desired activity was examined using Ru-2, Ru-3 and Ru-4, demonstrating that there is an optimal Pr content that maximizes the activity. The results obtained by the analytical methods with additional oxygen vacancy titration indicate that the activities of the catalysts are strongly correlated with the normalized oxygen vacancy densities.

KW - CeO nanocube

KW - Guaiacol

KW - Hydrodeoxygenation

KW - Oxygen vacancy

KW - Pr-doped CeO

KW - Ru catalyst

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U2 - 10.1016/j.cattod.2023.114338

DO - 10.1016/j.cattod.2023.114338

M3 - Article

AN - SCOPUS:85167618775

SN - 0920-5861

VL - 425

JO - Catalysis Today

JF - Catalysis Today

M1 - 114338

ER -

Nanostructured Ru(2 wt%)/Pr_xCe_1−xO_2-δ (x = 0, 0.12 and 0.25) materials for hydrodeoxygenation of guaiacol: Influence of oxygen vacancies on reactivity

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