Influence of reaction conditions on the electrochemical-hydrothermal synthesis of two ammonium vanadium phosphates:: (NH4)2VO(HPO4)2•H2O and (NH4)2VO( V0.88P1.12O7)

被引：18

作者：

Liu, LM ^{[1
]}

Wang, XQ ^{[1
]}

Bontchev, R ^{[1
]}

Ross, K ^{[1
]}

Jacobson, AJ ^{[1
]}

机构：

[1] Univ Houston, Dept Chem, Houston, TX 77204 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1999年 / 9卷 / 07期

关键词：

D O I：

10.1039/a901956a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The new phase (NH4)(2)VO(HPO4)(2). H2O, 1, has been synthesized by hydrothermal electrocrystallization at 100 degrees C. 1 is-triclinic, space group P1 with Z=2, a = 7.2499(8), b = 8.1244(9), c = 8.6529(9) Angstrom, alpha = 73.472(2), beta = 80.085(2), gamma = 85.077(2)degrees and V= 480.94(9) Angstrom(3). When the reaction temperature is increased to 110 degrees C, 1 is completely transformed into the known compound (NH4)(2)VO(V0.88P1.12O7), 2. The layered compound NH4VOPO4. xH(2)O, 3, a new example of the well-known MxVOPO4. xH(2)O phase has also been prepared by the same technique.

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页码：1585 / 1589

页数：5

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