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A Substance with Amazingly Improved Efficiency of Capturing Carbon Dioxides Developed
From left to right: Prof.Ali Coskun, Prof. Cafer T. Yavuz and Prof. Yousung Jung
- Selectivity of CO2 increased by 300 times in comparison to nitrogen, published in Nature Communications-
KAIST EEWS graduate school’s joint research team led by Prof. Cafer T. Yavuz, Prof. Ali Coskun, and Prof. Yousung Jung has developed the world"s most efficient CO2 absorbent that has 300 times higher carbon dioxide selectivity in comparison to nitrogen.
Recently, the importance of CCS* technology, which is about capturing, storing and treating carbon dioxides, has begun to emerge world-widely as a practical alternative for the response to climate change.
* CCS : Carbon Capture and sequestration
Current carbon dioxide capturing technologies are wet capturing using liquid absorbent, dry capturing using solid absorbent and separation-membrane capturing using a thin membrane like a film.
For the places like power plant and forge, where the emission of carbon dioxides is huge, the main task is to maintain the capturing efficiency under extremely hot and humid conditions.
The previously studied dry absorbents, such as MOF or zeolite, had the disadvantages of instability in moist conditions and expensive cost for synthesis.
On the other hand, the research team"s newly discovered dry absorbent, named ‘Azo-COP’, can be synthesized without any expensive catalysts so the production cost is very low. It is also stable under hot and humid conditions.
COP is a structure consisting of simple organic molecules combined into porous polymer and is the first dry carbon dioxide capturing material developed by this research team.
The research team introduced an additional functional group called "Azo" to the substance, so that it can selectively capture carbon dioxides among the mixture of gas.
Azo-COP, which includes ‘Azo’ functional group, is manufactured easily by using common synthesis methods, and impurities are removed simply by using cheap solvents like water and acetone instead of expensive catalysts. As a result, the manufacturing cost has lowered drastically.
Especially, Azo-COP is combined with carbon dioxides by weak attraction force rather than chemical attraction so the recycling energy cost for the absorbent can be reduced innovatively, and it is expected to be used for capturing substances other than carbon dioxides in various areas as it is stable under extreme conditions even under 350 degrees Celsius.
This research is supported by Korea Carbon Capture&Sequestration R&D Center(Head: Sangdo Park) and KAIST EEWS planning group.
Prof. Cafer T. Yavuz and Prof. Ali Coskun said that “when Azo-COP is used for separation of CO2 and N2, the capturing efficiency has increased by hundred times.” He continued “This substance does not need any catalysts and has great chemical characteristics like water stability and structure stability so is expected to be used in various fields including carbon dioxides capturing”
Meanwhile, this research is published in ‘Nature’s stablemate ‘Nature Communications’ on 15th of Jan.
2013.02.24 View 8657 -
Foreign R&D Centers Cropping Up Here
Korea Times / 2004. 03. 26 By Kim Tae-gyu
Staff ReporterThe world"s top companies and research institutes are rushing to Korea to set up research and development (R&D) centers.
The Ministry of Science and Technology (MOST) on Thursday said it isunder negotiation with several world-renowned firms or foundations,including University of Cambridge Cavendish Laboratory, Novartis, DuPont and EMC.The Ministry of Information and Communication (MIC) is also lookingto attract five to six multinational companies to establish R&D centers here this year.
Korea has already become a home for R&D institutes from top-tier foreign outfits like the world"s No.1 computer-chip maker Intel Corp. and Paris-based medical foundation Institut Pasteur as well as Germany"s Fraunhofer-Gesellschaft.
The MOST said Cavendish will exchange a memorandum of understandingto set up a joint research center here together with the Korea Advanced Institute of Science and Technology (KAIST) as early as this May.
The two entities will join hands to accelerate knowledge in the fields of nanotechnology, optical technology and physics to name a few,a MOST official said.It also seeks to invite Swiss-based pharmaceutical group Norvatis toestablish an R&D center here on occasion of the medical symposium that will take place here from March 31.
The Fortune 500 company is expected to dispatch dozens of high-ranking staff to the two-day neuroscience convention.
The Korea Foundation for International Cooperation of Science and Technology (KICOS), an affiliate of MOST, expects a few American companies, including DuPont, to open shop here.``DuPont is likely to make a decision, and we are currently under negotiations with several big companies like EMC,"" KICOS official KimKey-hyup said.
EMC is the world"s third-largest maker of data-storage devices.Seoul seeks to host six high-tech information-technology (IT) research centers this year.
Up to now, Intel and Fraunhofer committed themselves to setting up research centers here, and IBM will likely open an R&D center as soonas its affiliate IBM Korea"s bribe scandal regarding a government contract is settled.
Such high-profile companies as Microsoft, Hewlett Packard and Qualcomm are welcome to open R&D centers in Korea, an MIC official said. The government is willing to provide financial incentives to foreignR&D centers.
2004.03.26 View 11891