Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Flexibility: the key to carbon capture

15.08.2011
Materials made from porous coordination polymers with flexing structures make better traps for harmful gases

From power plants that capture their own carbon dioxide emissions to vehicles powered by hydrogen, clean energy applications often demand materials that can selectively adsorb large volumes of harmful gases.

Materials known as porous coordination polymers (PCPs) have great gas-trapping potential, and now their adsorptive properties can be boosted using a new technique developed by a research team in Japan.

The key to the development is making PCPs that can flex, since it allows the team to tune the gas-adsorbing properties of these materials—whether it is to improve the ability to selectively adsorb one gas from a mixture or to fine-tune the pressure at which the gas is captured and released.

While structural flexibility in PCPs is not new, team member Ryotaro Matsuda from the RIKEN SPring-8 Center, Harima, explains that he and his colleagues successfully incorporated this flexibility into a PCP built from molecular components known as secondary building units (SBUs). At the molecular scale, PCPs consist of vast networks of tiny interlinked cages, inside which gas molecules can sit. SBUs are made from clusters of metal atoms that can be used to form the corner of each cage. Their use gives materials scientists great control over the structure of a cage, but they can also lock the structure.

Matsuda and colleagues overcame the rigidity problem by connecting the cage corners into cubes using long, slim carbon-based linkers. In the absence of carbon dioxide, these slender linkers allow the cage framework to collapse into a non-porous solid; but in the presence of a gas, the material expands—a behavior known as gate-opening adsorption (Fig. 1).

It is a behavior that could prove useful, Matsuda explains. “Gate-opening-type adsorption, which is induced by the structural transformations from a non-porous structure to a porous structure at a certain pressure of gas, would provide a way to enhance the efficiency of pressure swing adsorption,” he says. Pressure-swing adsorption is being investigated as a way to capture carbon dioxide emissions from power plants. The concept relies on finding materials that will release the gas in response to a drop in pressure, so that it can be piped away for long-term, underground storage.

The researchers are now looking to improve the performance of their material. “We are currently trying to tune the soft porosity of the prototype PCP to separate mixtures of gases,” says Matsuda. “We have also been working to reveal the relationship between the structure, adsorption property and separation ability of [other] PCPs.”

The corresponding author for this highlight is based at the Spatial Order Research Team, RIKEN SPring-8 Center

Reference
Seo, J., Bonneau, C., Matsuda, R., Takata, M. & Kitagawa, S. Soft secondary building unit: dynamic bond rearrangement on multinuclear core of porous coordination polymers in gas media. Journal of the American Chemical Society 133, 9005–9013 (2011).

gro-pr | Research asia research news
Further information:
http://www.riken.jp
http://www.researchsea.com

More articles from Life Sciences:

nachricht Designer cells: artificial enzyme can activate a gene switch
22.05.2018 | Universität Basel

nachricht Flow of cerebrospinal fluid regulates neural stem cell division
22.05.2018 | Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

Im Focus: Dozens of binaries from Milky Way's globular clusters could be detectable by LISA

Next-generation gravitational wave detector in space will complement LIGO on Earth

The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...

Im Focus: Entangled atoms shine in unison

A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.

The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

 
Latest News

Designer cells: artificial enzyme can activate a gene switch

22.05.2018 | Life Sciences

PR of MCC: Carbon removal from atmosphere unavoidable for 1.5 degree target

22.05.2018 | Earth Sciences

Achema 2018: New camera system monitors distillation and helps save energy

22.05.2018 | Trade Fair News

VideoLinks
Science & Research
Overview of more VideoLinks >>>