Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Opening the Door for CO2

24.08.2009
Flexible, three-dimensional lattice binds carbon dioxide selectively and efficiently

Until recently, factory smokestacks that produced nothing but carbon dioxide and water vapor were considered exemplary. Now CO2 has become notorious as a greenhouse gas, and the danger of climate change has become one of the most pressing environmental problems of our time.

How can we slow the increasing release of CO2? Efficient methods for the separation of this greenhouse gas from industrial exhaust are being sought. Korean researchers have now developed a porous material that can bind and store CO2 efficiently and highly selectively. As Myunghyun Paik Suh and Hye-Sun Choi report in the journal Angewandte Chemie, the lattice-like network contains flexible “columns” that can open the pores of the three-dimensional lattice for CO2.

Many porous materials are able to absorb CO2 and other gas molecules. However, the selective, room-temperature extraction of CO2 at atmospheric pressure from industrial exhaust containing other gases such as nitrogen, methane, and water remains a major technical challenge.

The research team has now developed porous, three-dimensional networks of coordination polymers. Various nickel complexes and organic molecules are used as building blocks that assemble into two-dimensional lattice-like planes, which in turn grow into stacks held together by “columns”. The special trick in this case is that the columns are not rigid, but very flexible. The corresponding cavities in the structure are thus of variable size and can adjust to the guest molecules that enter.

The symmetric molecule carbon dioxide has a permanent electrical quadrupole moment that can be described as two electrical dipoles sitting back-to-back and pointing in opposite directions. This quadrupole interacts with the three-dimensional lattice, and this effect causes the columns to open the “gates”, allowing the gas to enter the cavities. In contrast, nitrogen, hydrogen, and methane have much smaller quadrupole moments. The pores thus remain closed to them. The exclusion of nitrogen, which makes up a large proportion of air, is essential for any potential CO2 capture. In addition, the new nickel-containing materials are stable at temperatures up to 300 °C and are air- and water- stable—also an important requirement for potential industrial application.

If the surrounding pressure is reduced, the stored CO2 is released. This type of material is thus suited for processes in which carbon dioxide must be cyclically stored and then released through a change in pressure.

Author: Myunghyun Paik Suh, Seoul National University (Republic of Korea), http://chem.snu.ac.kr/eng/Faculty/faculty_detail.asp?seqno=27&link=faculty

Title: Highly Selective CO2 Capture in Flexible 3D Coordination Polymer Networks

Angewandte Chemie International Edition 2009, 48, No. 37, 6865–6869, doi: 10.1002/anie.200902836

Myunghyun Paik Suh | Angewandte Chemie
Further information:
http://pressroom.angewandte.org
http://chem.snu.ac.kr/eng/Faculty/faculty_detail.asp?seqno=27&link=faculty

Further reports about: Angewandte Chemie CO2 carbon dioxide greenhouse gas organic molecule

More articles from Life Sciences:

nachricht Decoding the genome's cryptic language
27.02.2017 | University of California - San Diego

nachricht New risk factors for anxiety disorders
24.02.2017 | Julius-Maximilians-Universität Würzburg

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Safe glide at total engine failure with ELA-inside

On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded after a glide flight with an Airbus A320 in ditching on the Hudson River. All 155 people on board were saved.

On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded...

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

New pop-up strategy inspired by cuts, not folds

27.02.2017 | Materials Sciences

Sandia uses confined nanoparticles to improve hydrogen storage materials performance

27.02.2017 | Interdisciplinary Research

Decoding the genome's cryptic language

27.02.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>