PREPARATION OF LAYERED TITANIUM (IV) BIS(HYDROGENPHOSPHATE) MONOHYDRATE TI(HPO4)2.H2O AND ITS CHEMICAL-PROPERTIES

被引：3
|
作者：
TSUHAKO, M [1 ]
KAWAMOTO, K [1 ]
HORII, Y [1 ]
NARIAI, H [1 ]
MOTOOKA, I [1 ]
机构：
[1] KOBE UNIV,FAC GEN EDUC,DEPT CHEM,NADA KU,KOBE 657,JAPAN
来源：
NIPPON KAGAKU KAISHI | 1990年 / 07期
关键词：
D O I：
10.1246/nikkashi.1990.740
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A method for preparing crystalline titanium(IV) bis(hydrogenphosphate) monohydrate, Ti(HPO4)2-H2O (α-TiP), was established by the raction of titanium(IV) hydroxide, TiO2nH2O, or titanium(IV) oxide, TiO2 (rutile and anatase type), with orthophosphoric acid in an autoclave. In the titanium(IV) hydroxide and titanium(IV) oxide systems, the preparation of α-TiP was strongly dependent on mixing ratio (P2O5/TiO2), heating temperature, and heating time. The recommended method for the prearation of α-TiP is mixing ratio P2O5/TiO2=1.2~1.5, heating temperature 200~225oC, and heating time 5 h. α-TiP prepared by the present method is not soluble in distilled water and hydrochloric acid (0.1 mol-dm–3), but slightly dissolves in sodium hydroxide and ammonia solutions. α-TiP effectively adsorbed ammonia in an aqueous solution and ammonia gas. © 1990, The Chemical Society of Japan. All rights reserved.
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收藏
页码：740 / 745
页数：6
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