Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration02:34

Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration

9.4K
The rate of acid-catalyzed hydration of alkenes depends on the alkene's structure, as the presence of alkyl substituents at the double bond can significantly influence the rate.
9.4K
[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement01:21

[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement

3.3K
The Cope rearrangement is classified as a [3,3] sigmatropic shift in 1,5-dienes, leading to a more stable, isomeric 1,5-diene. The reaction involves a concerted movement of six electrons, four from two π bonds and two from a σ bond, via an energetically favorable chair-like transition state.
3.3K
Thermal Electrocyclic Reactions: Stereochemistry01:17

Thermal Electrocyclic Reactions: Stereochemistry

2.5K
The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
2.5K
Regioselectivity of Electrophilic Additions to Alkenes: Markovnikov's Rule02:17

Regioselectivity of Electrophilic Additions to Alkenes: Markovnikov's Rule

16.1K
If a set of reactants can yield multiple constitutional isomers, but one of the isomers is obtained as the major product, the reaction is said to be regioselective. In such reactions, bond formation or breaking is favored at one reaction site over others.
The hydrohalogenation of an unsymmetrical alkene can yield two haloalkane products, depending on which vinylic carbon takes up the halogen. However, one product usually predominates, where hydrogen adds to the vinylic carbon bearing the...
16.1K
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction01:16

[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

12.1K
The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
12.1K
Stereoisomerism02:52

Stereoisomerism

13.8K
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...
13.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Reinforcement learning control of quantum error correction.

Nature·2026
Same author

Photochemical formation of nitrated and oxygenated polycyclic aromatic compounds over the Southern Ocean.

Environmental research·2026
Same author

Joint effects of PM<sub>2.5</sub> pollution and cold waves exposure on population health risks in Shijiazhuang, China.

Scientific reports·2026
Same author

Observation of a 2-µm flat-top beam carrying orbital angular momentum by intracavity incoherent superposition.

Optics letters·2026
Same author

Calorimetric differential pressure sensor with high sensitivity for hydrodynamic perception.

Microsystems & nanoengineering·2026
Same author

Mitochondrial ROS dyshomeostasis: a key driver of accelerated supraspinatus atrophy after rotator cuff injury.

Frontiers in physiology·2026

Related Experiment Video

Updated: Jan 6, 2026

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
07:36

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

Published on: November 9, 2019

8.3K

Inverse selectivity for CO2 over C2H2 in an interdigitated coordination polymer.

Hui Kang1, Chen-Ning Li2, Lifei Yin1

  • 1College of Chemistry and Chemical Engineering, State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China.

Journal of Colloid and Interface Science
|October 18, 2025
PubMed
Summary

A new porous material, [Cu(5-NH2-ipa)(pia)], selectively adsorbs carbon dioxide (CO2) over acetylene (C2H2). This CO2-selective strategy offers energy-efficient purification of C2H2, yielding high-purity CO2.

Keywords:
CID structureCO(2)/C(2)H(2) separationInverse selectivityPorous coordination polymer

More Related Videos

A Simple and Efficient Protocol for the Catalytic Insertion Polymerization of Functional Norbornenes
09:08

A Simple and Efficient Protocol for the Catalytic Insertion Polymerization of Functional Norbornenes

Published on: February 27, 2017

11.0K
Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

8.2K

Related Experiment Videos

Last Updated: Jan 6, 2026

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
07:36

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

Published on: November 9, 2019

8.3K
A Simple and Efficient Protocol for the Catalytic Insertion Polymerization of Functional Norbornenes
09:08

A Simple and Efficient Protocol for the Catalytic Insertion Polymerization of Functional Norbornenes

Published on: February 27, 2017

11.0K
Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

8.2K

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Separation Science

Background:

  • Separating carbon dioxide (CO2) from acetylene (C2H2) is challenging due to similar molecular properties.
  • CO2-selective adsorption is preferred for energy efficiency over C2H2-selective methods.
  • Developing effective CO2-selective adsorbents for C2H2/CO2 mixtures requires further research.

Purpose of the Study:

  • To develop a CO2-selective adsorbent for efficient C2H2 purification.
  • To investigate the adsorption properties and mechanism of a novel porous coordination polymer.
  • To demonstrate the direct production of high-purity CO2 from gas mixtures.

Main Methods:

  • Synthesis and characterization of a porous coordination polymer, [Cu(5-NH2-ipa)(pia)].
  • Gas adsorption experiments at 298 K and 1.0 bar to determine selectivity and uptake.
  • Molecular simulation and theoretical calculations to understand adsorption mechanisms.
  • Experimental breakthrough tests to validate separation performance.

Main Results:

  • The material [Cu(5-NH2-ipa)(pia)] exhibits a CO2/C2H2 uptake ratio of 2.09 and IAST selectivity of 10.9 at 298 K and 1.0 bar.
  • Optimal pore size and complementary electrostatic potential facilitate preferential CO2 adsorption via strong interactions.
  • Breakthrough tests successfully yielded high-purity CO2 directly from CO2/C2H2 mixtures.
  • Molecular simulations confirmed the preferential CO2 adsorption mechanism.

Conclusions:

  • The porous coordination polymer [Cu(5-NH2-ipa)(pia)] is a promising material for CO2-selective capture from C2H2.
  • The CO2-selective adsorption strategy significantly enhances separation efficiency and reduces energy consumption.
  • This work advances the development of advanced porous materials for gas separation applications.