関連する実験動画

Updated: Jul 12, 2026

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

マグネタイト酸化:提案されたメカニズム

U Colombo, F Gazzarrini, G Lanzavecchia

    Science (New York, N.Y.)
    |February 26, 1965
    PubMed
    まとめ

    400°C以下の磁石の酸化により,固体溶液が形成されます. ヘマタイトの存在は酸化製品に影響し,アルファ-鉄 (III) オキシドの形成につながり,天然の磁石からマゲマイトの合成方法があります.

    さらに関連する動画

    An Experimental Protocol for Studying Mineral Effects on Organic Hydrothermal Transformations06:50

    An Experimental Protocol for Studying Mineral Effects on Organic Hydrothermal Transformations

    Published on: August 8, 2018

    Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles08:26

    Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles

    Published on: October 19, 2015

    関連する概念動画

    Microbes and Other Elemental Cycles01:24

    Microbes and Other Elemental Cycles

    Microbial activity plays a pivotal role in the biogeochemical cycling of iron and manganese, especially at the redox gradients characteristic of stratified aquatic environments. These cycles are driven by microbial transformations between oxidized and reduced forms of the metals, allowing organisms to exploit them for metabolic energy and structural purposes.Iron Cycling Across Redox GradientsIn neutral, oxygen-rich surface waters, iron is predominantly found in its oxidized, insoluble ferric...
    Acid Mine Drainage01:19

    Acid Mine Drainage

    Mining activities that disturb sulfide-rich rocks, particularly those containing pyrite (FeS₂), initiate a cascade of geochemical and microbiological processes with serious environmental implications. When exposed to air and water, pyrite undergoes oxidation, releasing sulfate, ultimately forming sulfuric acid and mobilizing heavy metals into surrounding water systems. This phenomenon, known as acid mine drainage (AMD), results in low pH waters laden with toxic elements that threaten aquatic...
    Radical Oxidation of Allylic and Benzylic Alcohols01:21

    Radical Oxidation of Allylic and Benzylic Alcohols

    Activated manganese(IV) oxide can selectively oxidize allylic and benzylic alcohols via a radical intermediate mechanism. Primary allylic alcohols are oxidized to aldehydes, while secondary allylic alcohols yield ketones. The redox reaction of potassium permanganate with an Mn(II) salt such as manganese sulfate (under either alkaline or acidic conditions), followed by thorough drying, yields the oxidizing agent: activated MnO2. While MnO2 is insoluble in the solvents used for the reaction, the...
    Corrosion02:49

    Corrosion

    The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...
    Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate02:21

    Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

    Alkenes can be dihydroxylated using potassium permanganate. The method encompasses the reaction of an alkene with a cold, dilute solution of potassium permanganate under basic conditions to form a cis-diol along with a brown precipitate of manganese dioxide.
    Balancing Redox Equations02:58

    Balancing Redox Equations

    Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...