相关实验视频
Updated: Jun 5, 2025

05:15
Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
7.8K
微波驱动的减少加速了矿氧化物中的氧气交换
Aitor Domínguez-Saldaña1, Alfonso J Carrillo1, María Balaguer1
1Instituto de Tecnología Química, (Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas), Valencia 46022, Spain.
ACS applied materials & interfaces
|December 4, 2024
概括
微波辅助氧化物还原电气化氧气生产的热化学循环. 这种方法可以使用酸矿进行更快,更低温度的空气分离.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 可再生能源可再生能源是可再生能源.
背景情况:
- 热化学循环为可再生气生产和空气分离提供了途径.
- 像冷空气分离这样的传统方法耗费大量能源.
- 泰坦酸矿通常用于高温热化学循环.
研究的目的:
- 为了研究微波辅助氧化物还原用于电气化热化学循环.
- 探索微波炉在氧气生成中用于空气分离的应用.
- 为了降低酸基循环的操作温度要求.
主要方法:
- 使用微波辐射来激活酸矿 (CaTi1-xMnxO3-δ) 中的氧化物还原.
- 执行氧气 (O2) 吸收和脱氧的热化学循环.
- 在微波加热下分析CaTi0.8Mn0.2O3-δ的性能.
主要成果:
- 微波激活显著降低了还原反应的操作条件.
- 实现了快速的吸附-脱附周期,在不到3分钟内完成.
- 在800°C时,对于CaTi0.8Mn0.2O3-δ的循环平均O2产量是2.6mLg-1min-1的.
结论:
- 微波辅助氧化物减少是热化学循环的一个有前途的电气化策略.
- 这种方法可以实现高效的热化学空气分离,在中等温度下循环更快.
- 这些发现为传统的低温空气分离提供了可行的替代方案.
更多相关视频
相关概念视频
Redox Reactions
55.5K
Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
55.5K
Oxidation of Phenols to Quinones
2.9K
In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
2.9K
Oxidation-Reduction Reactions
64.3K
Oxidation–Reduction Reactions
64.3K
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
9.8K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
9.8K
Oxidation and Reduction of Organic Molecules
6.1K
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...
The removal of an electron from a molecule, results in a...
6.1K
Redox Equilibria: Overview
522
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
522

