FORMATION OF CRYSTALLINE TITANIUM(IV) PHOSPHATES FROM TITANIUM(III) SOLUTIONS

被引：55

作者：

BORTUN, A ^{[1
]}

JAIMEZ, E ^{[1
]}

LLAVONA, R ^{[1
]}

GARCIA, JR ^{[1
]}

RODRIGUEZ, J ^{[1
]}

机构：

[1] UKRAINIAN ACAD SCI,INST SORPT & PROBLEMS ENDOECOL,KIEV 252142,UKRAINE

来源：

MATERIALS RESEARCH BULLETIN | 1995年 / 30卷 / 04期

关键词：

TITANIUM PHOSPHATES;

D O I：

10.1016/0025-5408(95)00019-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crystalline phases of titanium(IV) phosphate have been obtained from titanium(III) chloride in phosphoric acid solutions. The alpha-titanium phosphate synthesis is possible at low temperature (60-80 degrees C). gamma-Titanium phosphate is obtained by reflux with very concentrated phosphoric acid in 3-5 hours by oxidation with O-2. The influence in these reactions of several factors (concentration of reagents, molar ratio P:Ti in the reaction mixture, temperature and reaction time) was studied. The alpha-titanium phosphate formation takes place in several steps through the sequential formation of amorphous titanium(IV) phosphate, gamma-titanium phosphate and/or a semicrystalline titanium(IV) hydroxophosphate, Ti(OH)(2)(HPO4). H2O.

引用

页码：413 / 420

页数：8

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