Physico-chemical behaviour of V(V) in a concentrated phosphoric acid

被引：0
|
作者：
Sefiani, N.
Azzi, M.
Saib, N.
Hlaibi, M.
Ouazzani, T. M.
Kossair, A.
机构：
[1] Fac Sci Ain Chock, Lab Electrochim & Chim Environm, Casablanca, Morocco
[2] Ctr Rech Phosphates Mineraux CERPHOS, Casablanca, Morocco
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2006年 / 180卷 / 1-2期
关键词：
phosphoric acid acidity; vanadium; spectrophotometry; conductivity; viscosity;
D O I：
10.1016/j.jphotochem.2005.10.019
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：
Tests show that the conducitivity and viscosity of solutions of phosphoric acid (54% P2O5) change as increasing quantities of vanadium are added, indicating that the metallic cation interacts with the phosphoric acid molecule. This behaviour is confirmed by measurements of acidity. Determination of R0 (H) shows that the acidity of the environment increases as a function of the concentration of V (V), suggesting that the interaction between the vanadium and the phosphoric acid molecule releases H+ protons. Spectrophotometric measurements are used to determine the type of interaction, the nature of the species resulting from the interaction between the vanadium and the phosphoric acid molecule, and the number of protons involved. (c) 2005 Elsevier B.V. All rights reserved.
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页码：213 / 217
页数：5
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