相关实验视频
Updated: Jan 22, 2026

04:36
Production of Synthetic Nuclear Melt Glass
Published on: January 4, 2016
9.9K
可融化混合链接器岩性伊米达酸框架及其微孔玻璃:从点工程到选择性碳化合物吸附
Louis Frentzel-Beyme1, Marvin Kloß1, Pascal Kolodzeiski1
1Anorganische Chemie, Fakultät für Chemie & Chemische Biologie , Technische Universität Dortmund , Otto-Hahn-Straße 6 , 44227 Dortmund , Germany.
Journal of the American Chemical Society
|July 11, 2019
概括
研究人员从金属有机框架 (MOFs) 开发了可融化的多孔玻璃,特别是石化模酸框架 (ZIFs). 调整连接器比率系统控制点,使气体分离和储存的新应用成为可能.
科学领域:
- 材料科学
- 无机化学
- 超分子化学
背景情况:
- 来自金属有机框架 (MOF) 的多孔玻璃是新兴的功能材料.
- 焦化物伊米达酸框架 (ZIF) 是MOF的一种子类,可用于固体电解质和放射性废物存储等应用.
- 了解MOF化和玻璃形成的结构和组成因素至关重要,但有限.
研究的目的:
- 通过调整它们的组成,系统地研究ZIF的化行为.
- 在ZIF系统中确定连接器比率和点之间的关系.
- 探索由此产生的ZIF玻璃在气体吸附应用中的潜力.
主要方法:
- 合成的ZIF-4/ZIF-62 (M) 框架,具有不同摩尔比例的imidazolate (im-) 和benzimidazolate (bim-) 连接剂.
- 在整个组合范围 (x = 0 到 0.35) 调查了点和热行为.
- 进行气体吸附实验以评估碳化合物的吸附性质.
主要成果:
- 通过调整im-bim-linker比率来证明ZIF-4/ZIF-62的点的系统控制.
- 观察到从顺序无形化/再结晶到稳定液相的连贯化.
- 达到3D多孔MOF (370°C) 报告的最低点,明显低于最初的430°C.
- ZIF玻璃显示了C3和C4碳化合物的吸附,的动力学比更快,取决于连接器比率.
结论:
- 确定ZIF化和玻璃形成的组成要求,指导未来对可化的ZIF的研究.
- 突出了这些可调节的ZIF玻璃在选择性气体分离应用中的潜力.
- 展示了3D多孔MOF的最低点,扩大了MOF衍生材料的可能性.
更多相关视频
相关概念视频
Phase Transitions: Melting and Freezing
14.7K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
14.7K
The Looking Glass Self
304
The concept of the looking-glass self describes how an individual's self-concept is shaped by their perception of how others see them. This psychological theory, first introduced by sociologist Charles Horton Cooley in 1902, posits that self-identity emerges in a social context and is influenced by the judgments—real or imagined—of others.Research suggests that individuals frequently overestimate how positively others perceive them. This is particularly evident in physical...
304
Cytoskeletal Linker Proteins - Plakins
2.8K
Plakins are large proteins with binding domains for microtubules, microfilaments, intermediate filaments, and membrane-associated protein complexes at cell junctions. Plakin functions are evolutionarily conserved and are primarily involved in organizing the different components of the cytoskeleton by crosslinking them to each other and connecting them to the cell-matrix and cell adhesion complexes. They are also known to interact with signal transducers, serve as scaffolds for signaling...
2.8K
Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility
51.0K
Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
51.0K
Aromatic Hydrocarbon Anions: Structural Overview
3.6K
Neutral hydrocarbons like cyclopentadiene with an odd number of carbon atoms and one intervening CH2 group in the ring are not aromatic. Cyclopentadiene with 4 π electrons does not satisfy the 4n + 2 π electron rule. Additionally, the intervening CH2 group is sp3 hybridized and lacks a vacant p orbital, thereby interrupting the overlap of p orbitals in a continuous manner and preventing the delocalization of π electrons throughout the ring.
Due to the absence of continuous...
Due to the absence of continuous...
3.6K
Aromatic Hydrocarbon Cations: Structural Overview
3.6K
Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
Removing one hydrogen from the intervening CH2 group...
3.6K

