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

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. | Vietnam Journal of Chemistry, International Edition, 55(5): 595-601, 2017 DOI: Experimental method to determine the pore structure and pore size distribution of gamma alumina ( -Al2O3) material Vu Hong Thai Department of Chemical Process Equipment, School of Chemical Technology, Hanoi University of Science and Technology, Dai Co Viet Road, Hanoi, Vietnam Received 24 August 2017; Accepted for publication 20 October 2017 Abstract Gamma Alumina ( -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. 1. INTRODUCTION Due to their highly hygroscopic property, γ-Al2O3 materials are used in many different industrial processes such as drying, acid removal, steam purification, hydrocarbon adsorption, etc. For example, this material can be used for making adsorbent and catalyst carriers. In chemical industry, gamma alumina is used to separate polycyclic compounds and volatile organic compounds. In environmental technology, this