Experimental method to determine the pore structure and pore size distribution of gamma alumina (-Al2O3) material

Vu Hong Thai


Gamma Alumina (g-Al2O3) is a material with many good properties such as small pore size, high specific surface area, highly hygroscopic, and low melting temperature. These characteristics are very suitable for making adsorbent and catalyst carriers. Gamma alumina is widely applied in many industries such as petrochemical industry, chemical industry, and pharmaceutical industry. Therefore, the identification of the characteristics of the Gamma Alumina material is very important and helpful. In this research, experiments will be carried out to determine the pore structure, the pore size distribution of γ-Al2O3 particles. Modern and appropriate experimental methods are applied. Descriptions of the experimental methods and equipment are given. The first experiment is the pore structure determination of the material by using environmental scanning electron microscopy (ESEM). The second one is the pore size distribution determination with the help of Hg-porosimetry method. Experimental results will be presented and discussed.

Keywords. Pore structure, pore size distribution, gamma alumina.


Pore structure, pore size distribution, gamma alumina

Full Text:



Bui Vinh Tuong, Ha Luu Manh Quan, Le Phuc Nguyen, Đang Thanh Tung. Study on synthesis and development of -Al2O3 from Tan Binh’s aluminum hydroxide as a carrier for catalysts used in petrochemical synthesis, Petro Vietnam Journal, 4, 28-35 (2013).

Athene M. Donald. The use of environmental scanning electron microscopy for imaging wet and insulating materials, Nature Material, 2, 511-516 (2003).

Bogner A. Jouneau P. H., Thollet G., Basser D., Gauthier. A history of scanning electron microscopy developments: Towards “wet-STEM” imaging, Micron, 38, 390-401 (2007).

Krump H., Hudec I. and Luyt A. S., Influence of plasma on the structural characterization of polyester fibers determined by Hg-porosimetry, International Journal of Adhesion and Adhesives, 25(3), 269-273 (2005).

Leandro Martins, Marinalva A. Alves Rosa, Sandra H. Pulcinelli, Celso V. Santilli. Preparation of hierarchically structured porous alumias by a dual soft template method, Microporous and Mesoporous Materials, 132(1-2), 268-275 (2010).

Maria Giovanna Gandolfi et al. Environmental Scanning Electron Microscopy Connected with Energy Dispersive X-ray Analysis and Raman Techniques to Study ProRoot Mineral Trioxide Aggregate and Calcium Silicate Cements in Wet Conditions and Real Time, Journal of Endodontics, 36(5), 851-857 (2010).

Nina Holling et all., Evaluation of environmental scanning electron microscopy for analysis of Proteur mirabilis crystalline biofilms in situ on urinary catheters, FEMS Microbiology Letter, 355(1), 20-27 (2014).

Kirk S. E., Skepper J. N. and Donald A. M. Application of environmental scanning electron microscopy to determine biological surface structure, Journal of Microscopy, 233(2), 205-224 (2009).

Vu H. T., Metzger T., and Tsotsas E. Influence of pore size distribution via effective parameters in a continuous drying model, Drying Technology, 554-561 (2006).

Vu Hong Thai, Vu Dinh Tien. On Forward and Inverse Problem in Studying the Drying Behavior of Porous Media, Journal of Science & Technology, 93, 1-7 (2013).

Wang Y., Wang J., Shen M. and Wang W. Synthesis and properties of thermostable -alumina prepared by hydrolysis of phosphide aluminium, Journal of Alloys and Compounds, 467(1-2), 405-412 (2009).

Metzger T., Vu T. H., Irawan A., Surasani V. K. and Tsotsas E. Pore-Scale Modelling of Transport Phenomena in Drying, in Micro-Macro-Interactions in Structured Media and Particle Systems, edited by A. Bertram and J. Tomas, Springer, Berlin, 187-206 (2008).

Vu Hong Thai. Experimental method to determine the drying mass and drying kinetics of gamma alumina particle (-Al2O3), Vietnam Journal of Catalyst and Adsorption, 1(6), 54-58 (2017).

Vu Hong Thai. The use of continuous model in modelling the drying process of porous media: influence of sample size, Vietnam Journal of Chemistry, 55(2e), 45-49 (2017).

Dullien F. A. L. Porous media: Fluid transport and pore structure, 2nd Edition, Academic Press Inc., San Diego (1992).

Krischer O. and Kast W. Die wissenschaftlichen Grundlagen der Trocknungstechnik, erster Band, dritte Auflage, Springer, Berlin (1992).

Vu H. T. Influence of pore size distribution on drying behaviour of porous media by a continuous model, Ph.D. thesis, Otto-von-Guericke-Universität Magdeburg (2006).

Almatis AC, Inc. Adsorbents & Catalysts: Product data of Activated Aluminas F-200 (2005).