Al_2O_3-H_3PO_4体系中生成物及热变化的研究

The Study of the Resultant and Heat-Change in the Al_2O_3-H_3 PO_4 System

本文拟以Al_2O_3和85％的H_3PO_4为原料,采用H_3PO_4/Al_2O_3=6.8的投料比,在300℃以下温度范围内对磷酸铝系列化合物的生成进行了比较系统地考察。得出了AlH_3(PO_4)_2·3H_2O、AlH_3(PO_4)_2H_2O、Al(H_2PO_4)_3和AlH_2P_3O_(10)的生成量与温度的关系,研究了Al(H_2PO_4)_3和AlH_2P_3O_(10)·2H_2O的热变化过程。

In this paper Al_2O_3 and H_3PO_4(85%)are tried to use as material in proportion of H_3PO_4/Al_2O_3=6.8. under the temperature of 300℃, the production of the series compound of phosphate-aluminum has been investigated more systematically. The relation between the product-quantity and temperature of AlH_3(PO_4)_2·3H_2O, AlH_3(PO_4)_2, H_2O, Al(H_2PO_4), and AlH_2P_5O_(10)·2H_2O has been known, and the process of the heat-change of the Al(H_2PO_4), and AlH_2P_5O_(10)·2H_2O has been studied.