Jove
Visualize
联系我们
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

相关概念视频

Catalysis02:50

Catalysis

22.9K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
22.9K
Heterogeneous Catalysis01:22

Heterogeneous Catalysis

141
Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
141

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

Variations of Alloying Site Density in Pd<sub>1</sub>Cu Single-Atom Alloy Catalysts Lead to Shifted Product Yields in Electrochemical CO Reduction.

Angewandte Chemie (International ed. in English)·2026
Same author

Multi-Scale Modeling for Plasma-Enhanced Ammonia Decomposition over Carbides and Nitrides.

ACS catalysis·2026
Same author

Diffusion Model-Guided Inverse Design of Bimetallic Catalysts for Ammonia Decomposition.

Journal of the American Chemical Society·2025
Same author

Active learning-guided catalyst design for selective acetate production in CO electroreduction.

Nature communications·2025
Same author

Integrating Physical Principles with Machine Learning for Predicting Field-Enhanced Catalysis.

JACS Au·2025
Same author

Cobalt-Doped Bismuth Nanosheet Catalyst for Enhanced Electrochemical CO<sub>2</sub> Reduction to Electrolyte-Free Formic Acid.

Angewandte Chemie (International ed. in English)·2024

相关实验视频

Updated: May 3, 2026

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia
12:05

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia

Published on: October 10, 2013

15.4K

多尺度模拟引导电场增强氨催化裂变

Pragyansh Singh1, Qiang Li1, Yilang Liu1

  • 1Department of Chemical Engineering, University of Massachusetts, Lowell, Massachusetts 01854, United States.

ACS catalysis
|May 22, 2025
PubMed
概括

电场的应用显著增加了氨的催化裂变以生产. 这种方法降低了所需的温度,使船上气发电更适合海上应用.

科学领域:

  • 催化剂是一种催化剂.
  • 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.

背景情况:

  • 氨的催化裂变是生产的关键,特别是用于海上燃料电池.
  • 高温限制了当前的方法,阻碍了工业使用.
  • 外部电场提供了一种降低温度要求的方法.

研究的目的:

  • 为了研究电场对氨催化裂变对 (Ru) 催化剂的影响.
  • 开发一个多尺度模拟框架,以了解现场增强催化.
  • 为了确定有效生产的最佳条件.

主要方法:

  • 集成密度函数理论 (DFT) 计算与微动力学建模.
  • 开发了一个多尺度模拟框架.
  • 进行了灵敏度分析,以确定速度限制的步骤.

主要成果:

  • 在673K的负电场 (-1V/Å) 时,旋转频率从0.03s−1增加到1435.2s−1.
  • 电场在823K时将转换频率提高了4个数量级.
  • 操作温度从750K降低到586K (在5秒-1周转频率下) 时,电场为1V/Å.
  • 在Ru{1013) 上的NH脱被确定为限制速度的步骤.

更多相关视频

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
10:52

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

12.7K
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

3.5K

相关实验视频

Last Updated: May 3, 2026

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia
12:05

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia

Published on: October 10, 2013

15.4K
Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
10:52

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

12.7K
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

3.5K

结论:

  • 外部电场可以显著提高氨的催化裂变效率.
  • 这种方法为生产提供了降低运行温度的途径.
  • 多尺度模型为催化剂设计和过程优化提供了有价值的机械洞察力.