Video Experimental Relacionado
Updated: Sep 4, 2025
06:44
From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
69.2K
Discriminación de los isómeros de xileno en un polímero de coordinación apilado
Liangying Li1,2, Lidong Guo1, David H Olson2
1Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China.
Science (New York, N.Y.)
|July 20, 2022
Resumen
Un nuevo polímero de coordinación separa efectivamente los isómeros de xileno mediante adsorción dependiente de la temperatura. Este material flexible y poroso ofrece una alta selectividad y una cinética rápida para la purificación industrial con eficiencia energética.
Área de la Ciencia:
- Ciencias de los materiales
- Ingeniería Química
- Nanotecnología
Sus antecedentes:
- La separación de isómeros de xileno es crítica para las aplicaciones industriales, pero sigue siendo un desafío.
- Se necesitan adsorbentes eficientes para la tecnología de simulación de lecho móvil en la purificación de xileno.
Objetivo del estudio:
- Desarrollar un adsorbente altamente eficiente para la separación de isómeros de xileno.
- Para investigar el rendimiento del material tanto en la separación de la fase de vapor como en la de líquido.
Principales métodos:
- Síntesis de un polímero de coordinación unidimensional apilado {[Mn(dhbq) ((H2O) 2}.
- Caracterización del comportamiento de adsorción y las propiedades estructurales del material.
- Prueba de la eficiencia de separación de los isómeros de p, m y o-xileno.
Principales resultados:
- El polímero de coordinación demostró un reconocimiento molecular ideal y un tamizado de los isómeros de xileno.
- La adsorción dependiente de la temperatura permitió la separación completa del isómero.
- El material exhibió una alta flexibilidad, estabilidad, selectividad y cinética rápida.
Conclusiones:
- El polímero de coordinación desarrollado ofrece una solución prometedora para la separación de xileno con eficiencia energética.
- Este material podría aplicarse en procesos industriales de purificación por adsorción.
- La inflamación sensible a los estímulos contribuye al rendimiento excepcional del material.
Videos de Conceptos Relacionados
02:52Stereoisomerism
12.4K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
12.4K
02:37Disubstituted Cyclohexanes: cis-trans Isomerism
12.3K
Depending upon the different spatial orientation of the substituents, the disubstituted cycloalkanes exhibit two types of stereoisomers. The cis isomers have the substituents on the same side of the ring, whereas the trans isomers have the substituents on the opposite sides. These stereoisomers exhibit different physical properties and cannot be interconverted without breaking the carbon-carbon bonds.
In cyclohexane, the substituents can occupy different positions generating distinct isomers....
In cyclohexane, the substituents can occupy different positions generating distinct isomers....
12.3K
02:33Stereoisomerism of Cyclic Compounds
9.1K
In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...
9.1K
02:34Structural Isomerism
19.6K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
19.6K
01:26Polymer Classification: Stereospecificity
2.6K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
2.6K
02:01Isomerism in Alkenes
12.5K
Alkenes like 1-butene and 2-butene exhibit constitutional isomerism, as they differ in the position of the double bond. Further, 2-butene exhibits stereoisomerism and exists as two distinct compounds differing in spatial arrangement.
An isomer is called cis-2-butene when the methyl groups are on the same side of the double bond, and the other stereoisomer, in which methyl groups are on the opposite side of the double bond, is called trans-2-butene. The cis and trans stereoisomers are not...
An isomer is called cis-2-butene when the methyl groups are on the same side of the double bond, and the other stereoisomer, in which methyl groups are on the opposite side of the double bond, is called trans-2-butene. The cis and trans stereoisomers are not...
12.5K