Supercritical hydrothermal reactions for material synthesis

T Adschiri, S Takami, M Umetsu, S Ohara… - Bulletin of the …, 2023 - academic.oup.com
Since the early 1990s, Adschiri and his colleagues have performed research on the use of
supercritical water in diverse applications, including heavy oil reforming, waste polymer …

Recent advances in hydrothermal synthesis of facet-controlled CeO 2-based nanomaterials

Y Zhu, C Chen, P Cheng, J Ma, W Yang, W Yang… - Dalton …, 2022 - pubs.rsc.org
CeO2-based nanomaterials have received tremendous attention due to their variety of
applications. This paper is focused on the recent advances in facet-controlled CeO2-based …

Atomic‐Scale Valence State Distribution inside Ultrafine CeO2 Nanocubes and Its Size Dependence

X Hao, A Yoko, C Chen, K Inoue, M Saito, G Seong… - Small, 2018 - Wiley Online Library
Atomic‐scale analysis of the cation valence state distribution will help to understand intrinsic
features of oxygen vacancies (VO) inside metal oxide nanocrystals, which, however …

Continuous flow synthesis of nanoparticles using supercritical water: Process design, surface control, and nanohybrid materials

A Yoko, G Seong, T Tomai, T Adschiri - KONA Powder and Particle …, 2020 - jstage.jst.go.jp
A continuous flow reaction process in which a metal salt solution is rapidly mixed with high-
temperature water was employed to achieve rapid heating up to supercritical conditions. A …

Interactions between cellulose and lignin during hydrolysis in subcritical water

F Yang, P Zhu, H Zheng, W Yang, S Wu, H Ye… - The Journal of …, 2023 - Elsevier
The interactions between cellulose and lignin, and the hydrolysis behavior of cellulose,
lignin and cellulose-lignin mixtures with mass ratios of 25/75, 50/50, 75/25 in subcritical …

Highly Cr-Substituted CeO2 Nanoparticles Synthesized Using a Non-equilibrium Supercritical Hydrothermal Process: High Oxygen Storage Capacity Materials …

Y Zhu, G Seong, T Noguchi, A Yoko… - ACS Applied Energy …, 2020 - ACS Publications
As described herein, the synthesis of highly Cr-substituted CeO2 nanoparticles (Cr-CeO2)
for low-temperature bitumen upgrading is demonstrated using a supercritical hydrothermal …

Reduction of (100)-Faceted CeO2 for Effective Pt Loading

A Yoko, H Wang, K Furuya, D Takahashi… - Chemistry of …, 2024 - ACS Publications
Although the function and stability of catalysts are known to significantly depend on their
dispersion state and support interactions, the mechanism of catalyst loading has not yet …

Effect of Exposed Facets and Oxidation State of CeO2 Nanoparticles on CO2 Adsorption and Desorption

G Seong, A Yoko, T Tomai, T Naka… - ACS Sustainable …, 2024 - ACS Publications
CeO2 nanoparticles exhibit potential as solid adsorbents for carbon dioxide (CO2) capture
and storage (CCS), offering precise control over various facets and enhancing their …

Nanostructured ceria-based catalysts for the conversion of lignocellulosic biomass to fuels and chemicals

M Kamali, MA Kumar, P Sudarsanam, BM Reddy - Catalysis Today, 2024 - Elsevier
The synthesis of alternative chemicals and fuels is vital in view of abnormal climate change
and rapidly decreasing fossil fuel sources. The inherent hydrocarbon structure of renewable …

Supercritical Hydrothermal Synthesis of Organic‐Modified Ce1‐xZrxO2‐δ (0≤x≤1) Nanoparticles as a Low‐Temperature Oxygen Carrier

A Yoko, T Kamonvarapitak, G Seong, T Tomai… - …, 2022 - Wiley Online Library
In this study, organic surface‐modified Ce1‐xZrxO2‐δ nanoparticles were synthesized using
supercritical hydrothermal method. X‐ray diffraction and energy‐dispersive X‐ray …