- 作者: 高靜儀 ; 王忠茂
- 作者服務機構: 台灣師範大學化學系
- 中文摘要: Decomposition of H/sub 2/O/sub 2/ with Fe/sup 2+/ was studied with SnO/sub 2/ electrodes. By chronoamperometric and voltammetric techniques, the diffusion coefficients of Fe/sup 3+/ and H/sub 2/O/sub 2/ were estimated to be 5* 10/sup -6/ and 2*10/sup -5/cm/sup 2//s, respectively; the rate of decomposition of H/sub 2/O/sub 2/ with Fe/sup 2+/ was proportional to [ H/sub 2/O/sub 2/ ] /sup (1/2)/.bcdot. [ Fe/sup 2+/ ] /sup 2/ at a smaller concentration of Fe/sup 2+/, but to [ H/sub 2/O/sub 2/ ] /sup (1/2)/.bcdot. [ Fe/sup 2+/ ] when [ Fe/sup 2+/ ] was increased, indicating the formation of ferryl ion and the electron exchange between it and Fe/sup 2+/ playing important roles. This catalytic decomposition was dependent on pH; the maximum rate was observed to occur about pH=1.5.
- 英文摘要: --
- 中文關鍵字: Decomposition; Hydrogen Peroxide; Chronoamperometry; Voltammetry; Ph Value
- 英文關鍵字: 裂解;過氧化氫;時間電流滴定法;伏安法;pH值