Aluminium oxide-hydroxides obtained by hydrothermal synthesis: influence of thermal treatment on phase composition and textural characteristics

3rd International Youth Conference on Interdisciplinary Problems of Nanotechnology, Biomedicine and Nanotoxicology

物理学;医药卫生;生态环境科学

Zykova, A.^1,2 ; Livanova, A.^1 ; Kosova, N.^1 ; Godymchuk, A.^2,3 ; Mamontov, G.^2

Laboratory of Catalytic Research, Tomsk State University, Lenina ave. 36, Tomsk

634050, Russia^1

Division of Nanomaterials and Nanotechnologies, Tomsk Polytechnic University, Lenina ave. 30, Tomsk

634050, Russia^2

National University of Science and Technology MISIS, Leninsky Ave., 4, Moscow

119991, Russia^3

关键词: Aluminium oxide;    Heterogeneous catalyst;    High specific surface area;    Nano powders;    Nano-structured;    Pore volume;    Specific surface area and porosities;    Textural characteristic;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/98/1/012032/pdf
DOI  :  10.1088/1757-899X/98/1/012032

来源: IOP

【 摘 要 】

Aluminium oxide-hydroxides obtained by means of the hydrothermal synthesis of aluminium nanopowder are of great interest in terms of the potential supports for heterogeneous catalysts due its high specific surface area (200...300 m2/g) and pore size of 4...17 nm. In this work the influence of thermal treatment (150...1300 °C) on structural and phase composition, specific surface area and porosity of aluminium oxide-hydroxides has been investigated. Nanostructured γ-Al2O3(T=400 °C) was found to have the specific surface area of 328 m2/g and average pore size of ∼9 nm. The thermal treatment of aluminium oxide- hydroxides at the temperature of higher and lower than 400 °C has caused the reduction of specific surface area and overall pore volume.