在用于催化和分离的纳米孔状材料中,表面阻碍了质量转移的障碍
Shuman Xu1,2, Ke Zheng2,3, Cristian-Renato Boruntea2
1College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou 310027, China. dgcheng@zju.edu.cn.
Chemical Society reviews
|June 6, 2023
概括
表面屏障对用于催化和分离的纳米孔状材料产生重大影响. 了解这些内部和外部障碍对于设计先进材料至关重要.
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.
- 物理化学 物理化学
背景情况:
- 在纳米孔状材料中,对质量转移的表面障碍越来越被认可.
- 这些障碍影响了催化和分离中的关键过程.
- 存在两种主要类型:内部 (粒子内部扩散) 和外部 (吸收/释放率).
研究的目的:
- 审查和综合当前关于纳米孔状材料表面屏障的文献.
- 描述这些障碍的表征方法.
- 对它们的起源,性质和功能提出各种科学观点.
主要方法:
- 在纳米孔隙材料的表面屏障的文献综述.
- 对分子模拟数据的分析.
- 对实验测量的检查.
主要成果:
- 表面屏障在纳米孔状材料的性能中起着重要作用.
- 描述包括计算和实验方法.
- 关于这些障碍的确切性质和影响,目前正在进行科学辩论.
结论:
- 对表面屏障的全面了解对于促进催化和分离技术的发展至关重要.
- 优化纳米孔隙和层次结构材料需要考虑所有质量转移步骤.
- 需要进一步的研究才能就表面屏障现象达成共识.
相关概念视频
01:22Heterogeneous Catalysis
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...
01:17Pore Transport and Ion-Pair Transport
Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct microscopic...
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct microscopic...