関連する実験動画

Updated: Jul 3, 2026

Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments
05:50

Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments

Published on: May 11, 2017

塩素化されたガンマアルミニウム表面に関する原子スケールの洞察

Mathieu Digne1, Pascal Raybaud, Philippe Sautet

  • 1Direction Physique et Analyse, IFP, Rond-point de l'échangeur de Solaize, BP 3, 69390 Solaize, France.

Journal of the American Chemical Society
|July 24, 2008
PubMed
まとめ

塩素ドーピングはガンマアルミニウム表面を変化させ,燃料生産に不可欠なブロンステッド酸度を高めます. この研究では,工業的な条件下で塩素吸収と表面の変化を定量化しています.

さらに関連する動画

Obtaining 3D Chemical Maps by Energy Filtered Transmission Electron Microscopy Tomography08:15

Obtaining 3D Chemical Maps by Energy Filtered Transmission Electron Microscopy Tomography

Published on: June 9, 2018

Simultaneous Multi-surface Anodizations and Stair-like Reverse Biases Detachment of Anodic Aluminum Oxides in Sulfuric and Oxalic Acid Electrolyte10:27

Simultaneous Multi-surface Anodizations and Stair-like Reverse Biases Detachment of Anodic Aluminum Oxides in Sulfuric and Oxalic Acid Electrolyte

Published on: October 5, 2017

関連する概念動画

Radical Substitution: Allylic Chlorination01:31

Radical Substitution: Allylic Chlorination

Typically, when alkenes react with halogens at low temperatures, an addition reaction occurs. However, upon increasing the temperature or under reaction conditions that form radicals, providing a low but steady concentration of halogen radicals, allylic substitution reaction is favored. This is because allylic hydrogens are very reactive as the formed intermediate is resonance stabilized. For example, when propene is treated with chlorine in the gas phase at 400 °C, it undergoes allylic...
Mass Spectrometry: Alkyl Halide Fragmentation01:22

Mass Spectrometry: Alkyl Halide Fragmentation

Chlorine isotopes exist as 35Cl and 37Cl in a 3:1 ratio, while bromine isotopes exist as 79Br and 81Br in a 1:1 ratio. The mass spectrum of alkyl halides typically produces two distinct molecular ion peaks, the molecular ion peak, [M], and the molecular ion plus two, [M + 2] peak. The relative heights of these two peaks are proportional to the isotopic abundance ratios of the halide. For example, 2‐chloropropane and 1‐bromopropane display two peaks with relative peak heights in a 3:1 and 1:1...