PULSE-RADIOLYSIS STUDY OF CONCENTRATED PHOSPHORIC-ACID SOLUTIONS
PULSE-RADIOLYSIS STUDY OF CONCENTRATED PHOSPHORIC-ACID SOLUTIONS
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DOI：
10.1039/ft9928803319
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发表时间：
1992-11-21
期刊：
影响因子：
--
通讯作者：
YOSHIDA, Y
中科院分区：
文献类型：
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作者：
JIANG, PY;KATSUMURA, Y;YOSHIDA, Y
In the pulse radiolysis of concentrated phosphoric acid solutions, the direct action of radiation on phosphoric acid gives rise to the phosphate radical. The yields of the phosphate radical and the hydroxyl radical are proportional, respectively, to the electron fractions of phosphoric acid and water, and can be quantified as G(.OH + H2PO4.) = 0.30f(w) + 0.33f(s) mumol J-1. The forward and reverse rate constants of the equilibrium .OH + H3PO4 reversible H2O + H2PO4. were evaluated as 4.2 x 10(4) and 2.5 x 10(3) dm3 mol-1 s-1 respectively, from which E0(H2PO4., H+/H3PO4) = 2.65 V was derived. The decay kinetics and the reactions of the phosphate radical have also been studied.
