THERMOANALYTICAL STUDY ON THE CHLORINATION OF HYDRATED ALUMINAS AND TRANSITION ALUMINAS

被引：15

作者：

TSUCHIDA, T

ISHII, T

FURUICHI, R

HAGA, H

机构：

[1] Department of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo

来源：

THERMOCHIMICA ACTA | 1979年 / 34卷 / 01期

关键词：

D O I：

10.1016/0040-6031(79)80021-0

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The chlorination processes of four hydrated aluminas (bayerite, gibbsite, pseudoboehmite, boehmite) and four transition aluminas (η-,γ-,δ-,θ-Al2O3) were studied in the presence of active carbon by means of a gas-flow DTA apparatus. In the case of hydrated alumina systems three exothermic peaks appeared at about 230, 460 and 500°C or above, which corresponded to the formation of hydrogen chloride, white needle-like crystals and the chlorination of hydrated aluminas, respectively. On the other hand, in transition alumina systems, only one exothermic peak due to the chlorination of transition alumina appeared at 580-670°C. The relationship between the chlorination behavior and structure of transition aluminas was discussed. © 1979.

引用

页码：19 / 28

页数：10

共 16 条

[1]

Day M. K. B., 1953, J PHYS CHEM-US, V57, P946

[2] CRYSTAL STRUCTURE OF BETA-GA2O3 [J].