相关实验视频
Updated: Sep 14, 2025

10:00
Hydrogen Production and Utilization in a Membrane Reactor
Published on: March 10, 2023
2.6K
通过小分子电氧化辅助的混合系统节能生产气
Bing Wu1, Wenxiang Su2, Peipei Zhu1
1Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Materials, Jiangxi Normal University, Nanchang, 330022, China.
Advanced materials (Deerfield Beach, Fla.)
|July 21, 2025
概括
通过电化学水分裂探索绿色的生产. 混合系统用小分子电氧化替代氧的进化,提高效率,并提供额外的好处,如废物升级.
科学领域:
- 电化学 电化学 电化学
- 可再生能源可再生能源是可再生能源.
- 绿色化学 绿色化学
背景情况:
- 电化学分水 (EWS) 对于使用可再生能源可持续生产 (H2) 是至关重要的.
- 在EWS中的氧化演化反应 (OER) 在动力学上是缓慢的,限制了H2生产效率.
- 需要替代的阳极反应来克服OER的限制.
研究的目的:
- 审查混合EWS系统的近期进展,以小分子电氧化反应 (SMEOR) 取代OER.
- 突出SMEOR集成混合系统的优势和特点.
- 概述这些系统的优化策略,挑战和未来前景.
主要方法:
- 文献审查侧重于SMEOR机制,反应堆设计和性能指标.
- 对混合系统的分析,将SMEOR与演变反应 (HER) 和氧减少反应 (ORR) 集成在一起.
- 讨论SMEOR的催化剂工程和优化策略.
主要成果:
- 混合系统通过将热力学上有利的 SMEOR 与 HER 合来提供增强的 H2 生产.
- 这些系统显示出额外的好处,包括污染物降解,塑料废弃物价值化和有价值的化学合成.
- 双极二氧化生产和发电是综合系统的潜在结果.
结论:
- 集成SMEOR的混合EWS系统为高效和多功能绿色H2生产提供了一个有希望的途径.
- 进一步的催化剂开发和系统优化对于大规模实施至关重要.
- 这些先进的系统提供了超越H2生成的解决方案,为循环经济做出了贡献.
相关概念视频
Batteries and Fuel Cells
28.0K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
28.0K
Reduction of Alkenes: Catalytic Hydrogenation
12.6K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
12.6K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.4K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.4K
Electrolysis
27.3K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
27.3K
Metabolism of Chemolithotrophs
182
Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
182
The Z-Scheme of Electron Transport in Photosynthesis
10.5K
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
10.5K

