An Experimental Study of Phase Transformations of Aluminum Oxides in the Processes of Sub- and Supercritical Water Oxidation of Metallic Aluminum

被引：0
|
作者：
Gilmutdinov, I. I. [1 ]
Sandugei, N. S. [1 ]
Gilmutdinov, I. M. [1 ]
Kuznetsova, I. V. [1 ]
Kharlampidi, Kh. E. [1 ]
Sabirzyanov, A. N. [1 ]
机构：
[1] Kazan Natl Res Technol Univ, Kazan 420000, Russia
来源：
HIGH TEMPERATURE | 2022年 / 60卷 / 02期
关键词：
HYDROTHERMAL OXIDATION;
D O I：
10.1134/S0018151X22020183
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this work, samples of metallic aluminum are objects of sub- and supercritical water oxidation. Experimental studies have been carried out, and dependences of the effect of temperature, pressure, reaction time, and pH of the oxidizing agent on the phase composition of the oxidation products and their adsorption properties have been revealed. Experimental studies have been carried out in the temperature range of 275-380 degrees C, reaction time from 3 to 12 h, and different water pH of 7-12. Maximum specific surface S = 120.2 m(2)/g samples obtained at temperature T = 380 degrees C and reaction time tau = 3 h with pH 12. The phase composition of this sample included aluminum oxide gamma-Al2O3 (92.3 wt %) and corundum alpha-Al2O3 (7.7 wt %).
引用
收藏
页码：177 / 181
页数：5
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