4.6: Pourbaix Diagrams - Chemistry LibreTexts
网页Pourbaix Diagrams plot electrochemical stability for different redox states of an element as a function of pH. As noted above, these diagrams are essentially phase diagrams that map the conditions of potential and pH (most typically in aqueous solutions) where different redox species are stable.
电位-pH图 - 维基百科，自由的百科全书
网页最简单的电位-pH图只涉及一种 元素 的不同 氧化态 形态与水构成的体系，用它可以预测在具特定 电位 （氧还态）和 pH （酸度）的水溶液体系中，某种元素稳定存在的形态和条件。 现在已有数十种元素与水构成的 电位 -pH图汇订成册（« Atlas d'équilibres électrochimiques »，《电化学平衡图谱》），使用时十分方便。 电位-pH图的构建比较复杂，一般包括以下三步： 列出有关物质的各种存在状态及其 化学势 值； 写出相关物质之间反应的平衡关系 …
布拜图（Pourbaix Diagram） 计算 - 知乎 - 知乎专栏
网页布拜图（Pourbaix diagram），又称为电位-pH图，是以电位（平衡电极电位，相对于标准氢电极）为纵坐标，以pH为横坐标的电化学平衡图，其给出了反应的平衡电极电位与pH关系【1】。. 根据布拜图可以直接判断在给定条件下（给定电位和pH）反应进行的可能性。. 图 ...
Aquatic chemistry of the actinides: aspects relevant to their ...
网页2012年1月1日 · These diagrams, also called Pourbaix diagrams (Pourbaix, 1966) after the Belgian chemist Marcel Pourbaix, are considered to be similar to phase diagrams, indicating the expected dominant actinide species as a function of …
4.12: Pourbaix Diagrams - Chemistry LibreTexts
网页Pourbaix diagrams depict the most stable species or phase of an element in aqueous solution as a function of potential (on the y-axis) and pH (on the x-axis). Pourbaix's Atlas of Electrochemical Equilibria in Aqueous Solution contains diagrams for many elements along with extensive notes on their construction. 1.
Pourbaix Diagrams - Resources
网页Pourbaix Diagrams. The effects of pH on the form in which an element in a given oxidation state exists in natural waters can be summarized with predominance diagrams such as that for phosphorous (V) shown below. However, if suitable reducing agents are present, the phosphorous may not remain in the +5 oxidation state.
Thermodynamics of Corrosion: Pourbaix Diagrams | SpringerLink
网页2009年11月20日 · Marcel Pourbaix has developed a unique and concise method of summarizing the corrosion thermodynamic information for a given metal in a useful potential–pH diagram. These diagrams indicate certain regions of potential and pH where the metal undergoes corrosion and other regions of potential and pH where the metal is protected from corrosion.
COMPUTATION OF ACTINIDE POURBAIX DIAGRAMS AT 298 K …
网页PDF | On Oct 17, 2010, M H Piro and others published COMPUTATION OF ACTINIDE POURBAIX DIAGRAMS AT 298 K AND 550 K (U,Np,Pu,Am,Cm-H 2 O) | Find, read and cite all the research you need on...
Pourbaix Diagrams - SpringerLink
网页2018年9月22日 · In 1945, Marcel Pourbaix (1904–1998) proposed in the Atlas of Electrochemical Equilibria in Aqueous Solutions the potential -pH diagram of elements in the presence of water, which is now called “Pourbaix diagram”. It uses thermodynamic considerations to define potentials corresponding to the …
网页Referring to metals, the Pourbaix diagram (E-pH) displays the zones of stability of the chemical species involved as a function of potential and pH, namely: metal (immunity zone), metal ions (corrosion zone), oxides and hydroxides (passivation