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Oxidation of Alcohols02:37

Oxidation of Alcohols

16.2K
In this lesson, the oxidation of alcohols is discussed in depth. The various reagents used for oxidation of primary and secondary alcohols are detailed, and their mechanism of action is provided.
The process of oxidation in a chemical reaction is observed in any of the three forms:
16.2K
Oxidation Numbers03:14

Oxidation Numbers

42.9K
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
42.9K
Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

75.8K
Oxidation–Reduction Reactions
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Pyruvate Oxidation01:15

Pyruvate Oxidation

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After glycolysis, the charged pyruvate molecules enter the mitochondria via active transport and undergo three enzymatic reactions. These reactions ensure that pyruvate can enter the next metabolic pathway so that energy stored in the pyruvate molecules can be harnessed by the cells.
First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
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Radical Oxidation of Allylic and Benzylic Alcohols01:21

Radical Oxidation of Allylic and Benzylic Alcohols

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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...
2.9K
Oxidation and Reduction of Organic Molecules01:19

Oxidation and Reduction of Organic Molecules

9.5K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
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Updated: Feb 8, 2026

Aerosol-assisted Chemical Vapor Deposition of Metal Oxide Structures: Zinc Oxide Rods
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金属-有機のフレームワークに支えられた単原子ベースのヴァナジウム酸化物触媒:選択的アルコール酸化と構造-活性関係

Ken-Ichi Otake1, Yuexing Cui1, Cassandra T Buru1

  • 1Department of Chemistry and Chemical and Biological Engineering , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States.

Journal of the American Chemical Society
|June 29, 2018
PubMed
まとめ

単原子のバナジウム酸化物触媒は,高結晶金属有機フレームワーク (MOF) で合成された. Hf-MOF-808-Vの熱誘発によるバナジウム再定位は,その酸化触媒的活性を増強した.

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科学分野:

  • 材料科学
  • カタリシス
  • ナノテクノロジー

背景:

  • メタル・オーガニック・フレームワーク (MOF) は,触媒用途の調整可能な多孔構造を提供します.
  • 単原子触媒は高効率と選択性のユニークな機会を提供します.
  • バナジウム酸化物は,多用途の酸化触媒特性で知られている.

研究 の 目的:

  • Hf-MOF-808とZr-NU-1000に統合された単原子のバナジウム酸化物触媒を合成し,特徴づけること.
  • これらの新材料の酸化触媒活性を調査する.
  • MOF内のバナジウムの構造的動態とその触媒への影響を解明する.

主な方法:

  • MOFに単原子バナジウムを組み込むための合成後のメタリング.
  • シングル・クリスタルX線結晶学,分析,スペクトロスクーピテクニックを用いた包括的な特徴付け.
  • 4メトキシベンジルアルコールの酸化による触媒性能の評価

主要な成果:

  • バナジウムを含むMOF (Hf-MOF-808-VとZr-NU-1000-V) の合成と構造の決定に成功した.
  • モデル反応の酸化触媒活性が実証されている.
  • 結晶学的およびスペクトル学的証拠は,加熱時にHf-MOF-808-V内のヴァナジウム移動を示した.

結論:

  • 単原子のバナジウム酸化物触媒は,結晶MOFに効果的に組み込まれることができます.
  • MOF構造内のヴァナジウムのダイナミックな行動は,触媒性能にとって極めて重要です.
  • Hf-MOF-808-Vは,熱によるバナジウム再定位に起因する強化された触媒活性を示し,MOFベースの触媒のための新しい設計戦略を強調しています.