Jove
Visualize
联系我们

相关概念视频

Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the generated carbocation,...
Titration of Polyprotic Base with a Strong Acid01:18

Titration of Polyprotic Base with a Strong Acid

The titration of a polyprotic base such as sodium carbonate with a strong acid such as hydrochloric acid results in two equivalence points on the titration curve. At the first equivalence point, the carbonate ions in the base are completely converted to bicarbonate ions. The second equivalence point corresponds to the complete conversion of bicarbonate ions to carbonic acid, which dissociates into carbon dioxide and water. The region before the first equivalence point corresponds to the...

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Soluble Ring-Unsubstituted Phthalocyanine Zirconium(IV) and Niobium(V) cis-Alkoxides and Their Catalytic Activity Toward the Ring-Opening Polymerization of rac-Lactide.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025
Same author

Anion exchange polymer modified electrodes for detection of Δ<sup>9</sup>-tetrahydrocannabinol (Δ<sup>9</sup>-THC): a potential electrochemical sensor for point-of-care and roadside testing.

Chemical communications (Cambridge, England)·2024
Same author

Aryl ether-free polymer electrolytes for electrochemical and energy devices.

Chemical Society reviews·2024
Same author

An organic proton cage that is ultra-resistant to hydroxide-promoted degradation.

Nature communications·2024
Same author

Cation Exchange Membranes and Process Optimizations in Electrodialysis for Selective Metal Separation: A Review.

Membranes·2023
Same author

Performance and Stability of Aemion and Aemion+ Membranes in Zero-Gap CO<sub>2</sub> Electrolyzers with Mild Anolyte Solutions.

ChemSusChem·2023
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关实验视频

Updated: May 21, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

一种稳定的氧化导电聚合物.

Owen D Thomas1, Kristen J W Y Soo, Timothy J Peckham

  • 1Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6.

Journal of the American Chemical Society
|June 21, 2012
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种基于氧化的新型膜,用于离子交换应用. 这种稳定的氧化导电膜在性溶液中表现出增强的稳定性,为先进的电化学设备铺平了道路.

更多相关视频

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
06:34

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Published on: September 19, 2020

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
08:00

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Published on: March 27, 2018

相关实验视频

Last Updated: May 21, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
06:34

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Published on: September 19, 2020

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
08:00

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Published on: March 27, 2018

科学领域:

  • 聚合物化学 聚合物化学
  • 材料科学 材料科学 材料科学
  • 电化学 电化学 电化学

背景情况:

  • 阳离子交换膜 (AEM) 对于燃料电池和电解剂等电化学设备至关重要.
  • 现有的 AEM 往往受限于氧化物稳定性,特别是在性环境中.
  • 胺盐以其在AEM中的潜力而闻名,但易受氧化物攻击.

研究的目的:

  • 为离子交换应用开发一种新型,稳定的氧化物导电膜.
  • 为了研究胺基聚合物的增强氧化物稳定性.
  • 创建一类新的离子交换聚合物和膜,以提高性能.

主要方法:

  • 合成分子和聚合物胺类似物,在C2位置进行硬质挤压.
  • 通过将聚合物与聚胺醇混合和氧化物激活的静电相互作用来制造膜.
  • 在中性和KOH溶液中的膜稳定性的表征.
  • 测量离子 (氧化) 导电性.

主要成果:

  • 合成的胺类似物表现出前所未有的氧化物稳定性.
  • 在C2位置周围的绝缘挤压保护了二离子免受核友的攻击.
  • 由此产生的膜表现出离子导电率高达13.2mS cm(-1).

结论:

  • 已经开发出了一种新的稳定氧化物导电的离子交换聚合物和膜的新类.
  • 固态保护策略有效地提高了基介质中的基基材料的稳定性.
  • 这些发现为开发电化学能源系统的持久AEM提供了有希望的途径.