High temperature transition aluminas in δ-Al2O3/θ-Al2O3 stability range

L Kovarik, M Bowden, J Szanyi - Journal of Catalysis, 2021 - Elsevier
High temperature treated transition aluminas display adsorptive and catalytic properties that
are in many ways comparable to those of their low temperature counterpart γ-Al 2 O 3. While …

Influence of feedstock and thermal spray process on the phase composition of alumina coatings and their sliding wear

O Ali, R Ahmed, FL Toma, LM Berger, B Matthey… - Journal of thermal spray …, 2023 - Springer
Suspension thermal spraying is an emerging coating technology that enables the deposition
of dense-structured ceramic coatings. As wear resistance is a main application field of …

An alumina phase induced composite transition shuttle to stabilize carbon capture cycles

X Ma, S Luo, Y Hua, S Seetharaman, X Zhu… - Nature …, 2024 - nature.com
Abstract Limiting global warming to 1.5-2° C requires a 50-90% reduction in CO2 emissions
in 2050, depending on different scenarios, and carbon capture, utilization, and storage is a …

Preparation of branched Al2O3 and its synergistic effect with carbon nanotubes on the enhancement of thermal conductive and electrical insulation properties of …

Y Ouyang, Z Yang, T Long, H Tian, L Bai, X Li… - Materials Today …, 2023 - Elsevier
With the increasing demand for thermal management materials in the highly integrated
electronics fields, it is great significant to develop next-generation thermal conductive yet …

Structural complexity of γ-Al2O3: The nature of vacancy ordering and the structure of complex antiphase boundaries

L Kovarik, M Bowden, K Khivantsev, JH Kwak, J Szanyi - Acta Materialia, 2024 - Elsevier
The structure of γ-Al 2 O 3 remains undetermined despite decades of research. This is due
to the high degree of disorder, which poses significant challenges for structural analysis …

Precise Identification and Characterization of Catalytically Active Sites on the Surface of γ‐Alumina

K Khivantsev, NR Jaegers, JH Kwak… - Angewandte …, 2021 - Wiley Online Library
Abstract γ‐alumina is one of the oldest and most important commercial catalytic materials
with high surface area and stability. These attributes enabled its use as the first commercial …

High-Field One-Dimensional and Two-Dimensional 27Al Magic-Angle Spinning Nuclear Magnetic Resonance Study of θ-, δ-, and γ-Al2O3 Dominated Aluminum Oxides: Toward …

S Xu, NR Jaegers, W Hu, JH Kwak, X Bao, J Sun… - ACS …, 2021 - ACS Publications
Herein, a detailed analysis was carried out using high-field (19.9 T) 27Al magic-angle
spinning (MAS) nuclear magnetic resonance (NMR) on three specially prepared aluminum …

pH-dependent growth of alumina nanorods with a high aspect ratio for enhanced propane dehydrogenation performance

H Wang, WC Li, Y Ma, Y Zhang, SZ Zhou… - Chemical Engineering …, 2024 - Elsevier
Controllable synthesis of porous alumina is always challenging due to the diversity of
precursors and the complexity of the growth process. In this work, alumina nanorods with …

Enhanced propane dehydrogenation performance using bimetallic-modified GaPt/SiO2-Al2O3 with ultralow-loading Pt

J Ma, H Yuan, C Liu, J Wang, R Zhang, A Ma - Fuel, 2024 - Elsevier
Propane dehydrogenation (PDH) is used to increase propylene production and to produce
hydrogen as a by-product. Despite the widespread utilisation of Pt-loaded catalysts in …

Efficient recovery of all valuable metals from spent HDS catalysts: Based on roasting mechanisms for enhanced selective leaching and separation

Y Chen, X Wu, W Guan, S **ao, K Fang, J Qing… - Journal of …, 2024 - Elsevier
Recovery of all valuable metals such as Ni, Mo, V and Al from spent hydrodesulfurization
(HDS) catalysts is beneficial to environmental protection and resource recycling. The current …