Electron paramagnetic resonance study of the proton-assisted thermal decompositions of MnO4-and CrO42- doped into (NH4)2SO4 and LiNH4SO4 crystals

Jiang Tsu Yu*, Shen Yuan Chou

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

11 引文 斯高帕斯(Scopus)

摘要

This paper reports a novel application of electron paramagnetic resonance (EPR) to the detection of the thermal decompositions of MnO4-4and the CrO42- doped into (NH4)2SO4 and LiNH4SO4 crystals. By heating the sample crystals to temperatures well below the dissociation temperature or the high-temperature structural phase transition temperatures, isolated Mn2+and Cr3+ are detected by EPR. By a comparative study, one can conclude that the thermal decomposition of MnO4- into Mn2+ or of CrO42-into Cr3+, is accomplished through a solid-state chemical reaction between the thermally-excited ammonium hydrogens and the permanganate or the chromate oxygens. It can be inferred that the ammonium hydrogens participating in the thermal decomposition process are mainly the "free" protons released by the ammonium groups.

原文英語
頁(從 - 到)1255-1262
頁數8
期刊Journal of Physics and Chemistry of Solids
51
發行號11
DOIs
出版狀態已發佈 - 1990

ASJC Scopus subject areas

  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學

指紋

深入研究「Electron paramagnetic resonance study of the proton-assisted thermal decompositions of MnO<sub>4</sub><sup>-</sup>and CrO<sub>4</sub><sup>2-</sup> doped into (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> and LiNH<sub>4</sub>SO<sub>4</sub> crystals」主題。共同形成了獨特的指紋。

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