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Spillover Phenomenon Identified Using Model Catalyst System
Researchers at KAIST have identified spillover phenomenon, which has remained controversial since its discovery in the early 1960s.
KAIST Department of Chemical and Biomolecular Engineering’s Professor Min-Gi Choi and his team has explained the "spillover phenomenon," using their own model catalyst system where platinum is selectively located within the amorphous aluminosilicate.
The research results were published on the 25th February online edition of Nature Communications.
Spillover refers to a phenomenon that occurs when hydrogen atoms that have been activated on the surface of metals, such as platinum, move to the surface of the catalyst. It was predicted that this phenomenon can be used to design a catalyst with high activity and stability, and thus has been actively studied over the last 50 years.
However, many cases of the known catalysts involved competing reactions on the exposed metal surface, which made it impossible to directly identify the presence and formation mechanism of spillover.
The catalysts developed by the researchers at KAIST used platinum nanoparticles covered with aluminosilicate. This only allowed the hydrogen molecules to pass through and has effectively blocked the competing reactions, enabling the research team to study the spillover phenomenon.
Through various catalyst structure and reactivity analysis, as well as computer modeling, the team has discovered that Brönsted acid sites present on the aluminosilicate plays a crucial role in spillover phenomenon.
In addition, the spillover-based hydrogenation catalyst proposed by the research team showed very high hydrogenation and dehydrogenation activity. The ability of the catalyst to significantly inhibit unwanted hydrogenolysis reaction during the petrochemical processes also suggested a large industrial potential.
Professor Min-Gi Choi said, “This particular catalyst, which can trigger the reaction only by spillover phenomenon, can be properly designed to exceed the capacity of the conventional metal catalysts. The future goal is to make a catalyst with much higher activity and selectivity.”
The research was conducted through funds subsidized by SK Innovation and Ministry of Science, ICT and Future Planning.
The senior research fellow of SK Innovation Seung-Hun Oh said, “SK Innovation will continue to develop a new commercial catalyst based on the technology from this research.”
Juh-Wan Lim and Hye-Yeong Shin led the research as joint first authors under supervision of Professor Min-Gi Choi and computer modeling works were conducted by KAIST EEWS (environment, energy, water, and sustainability) graduate school’s Professor Hyeong-Jun Kim.
2014.03.03 View 10638 -
Seung-Han Lee, a doctoral student in electrical engineering, receives the best paper award from ISQED 2014
Seung-Han
Lee, a doctoral candidate in the department of electrical engineering at KAIST,
received a Best Paper Award from the International Symposium on Quality
Electronic Design (ISQED), a high-profile international conference started in 2000 to promote innovation and quality in electronic and
engineering designs through inter- and multidisciplinary approaches. The
award ceremony will take place at the 2014 ISQED on March 3-5, 2014 at the Convention
Center in Santa Clara, CA, USA.
Professor
Chong-Min Kyung, an advisor to Seung-Han, expressed his excitement about his student's achievement.
“This is
the first time a Korean has ever received the best paper award at this academic
conference. It’s great news to our student as well as to KAIST.”
The topic
of Lee’s research paper was dynamic cache data management for minimizing the
energy consumption of three-dimensional multi-processor semiconductor chips.
2014.03.03 View 10899 -
Quacquarelli Symonds (QS) World University Rankings by Subject 2014
The QS
World University Rankings are annual university rankings published by
Quacquarelli Symonds (QS) which provides the overall rankings of top global
universities as well as the rankings for individual subjects. The 2014 QS World
University Rankings by Subject is a comprehensive guide to the world’s best universities
in 30 popular subjects of 5 academic disciplines: arts & humanities,
engineering & technology, life sciences & medicine, natural sciences,
and social sciences.
According
to the 2014 subject rankings, released on February 26, KAIST made the list of top
50 universities in 9 subjects: physics & astronomy; materials sciences;
chemistry; chemical engineering; mechanical, aeronautical & manufacturing
engineering; electrical & electronic engineering; civil & structural engineering;
computer science & information systems; and biological sciences.
Among
them, KAIST was ranked number one in Korea for 5 subjects: materials sciences
(16th); mechanical, aeronautical & manufacturing engineering (21st);
civil & structural engineering (32nd); computer science &
information systems (36th), and biological sciences (43rd).
For basic sciences, KAIST has made good progress as well. For example, in
mathematics, KAIST took first place in Korea and was ranked in the 51st-100th
of the world’s top universities. Another notable result was that its business college
in Seoul campus, a relatively new addition to KAIST, made the rankings list of
51st-100th in accounting & finance.
The 2014
QS subject rankings used the following criteria for its evaluation of
university performance: a survey of academic and employer reputation, citations
per paper, inclusion of specialists, and the h-index, known as the Hirsch index or Hirsch number, which was
suggested by Jorge E. Hirsch, a physicist at the University of California in
San Diego, as a tool for determining theoretical physicists’ relative quality.
Today, the h-index is used to measure
both the productivity and impact of the published work of a scientist or
scholar.
2014.02.28 View 11314 -
Festival Featuring Asia's Best Science Students to be Held
The first Electronic Olympics, which will host students from five top Asian research-centered universities, will be held in August at KAIST. Students will take part in competitive events and explore cultural diversity. Student representatives of HKUST, NTU, TITECH, Tsinghua University, and KAIST gathered on February 20 to begin planning the tentatively named “ASPIRE E-Olympics.”
The key words of this Olympics are "Harmony" and "Competition." The events will be composed of an AI programming contest, SEM (Scanning Electron Microscope) picture contest, and the other technology-based contests. Cultural events, where each university’s students can interact, will also be prepared.
ASPIRE (Asian Science and Technology Pioneering Institutes of Research and Education) events have been held from 2009. Previously, the ASPIRE forum has been an exchange event for groups of vice presidents and graduate school students from the five schools to exchange achievements in education and research. This year, it has been extended to undergraduates.
Yoseop Kim, KAIST’s student body vice president, said that he wants to make a MOU with some of Asia’s best research-centered universities and develop it into something similar to the Davos Forum. His intention is to support the E-Olympics in the hope that ASPIRE will become a top university consortium.
From left, HKUST, KAIST, NTU, TITECH, Tsinghua University Logos
Student representative group photo of Top Asian Research-Centered Universities
Electronic Olympics for students from five top Asian science and engineering universities to be held in August
2014.02.27 View 8884 -
A game enthusiast received a Ph.D. at the 2014 commencement
A high school student, who was addicted to video gaming and had barely managed to gain entrance to KAIST, became a star of its 2014 commencement ceremony.
The student was Tae-Woo Park who received his Ph.D. in games at 32 years of age.
Park entered KAIST in 2002 as an undergraduate student. However, owning to bad grades, he was not accepted to the graduate school of KAIST until 2006. He began playing games at the age of 7, which distracted him from his studies at an early age. Nevertheless, he was able to complete master’s degree after two and a half years, which normally takes two years for average students.
Professor Joon-Hwa Song saw a possibility from his student’s experience of producing and commercializing a mobile puzzle game while Park was working as a president of the game club, HAJE, at KAIST. Professor Song advised him to take the advantage of his interests and try developing game platforms and contents. Park decided to develop a game that could help others and would change people’s negative views of games. He created a whole new generation of games.
In order to find ideas for games that can be easily enjoyed in daily lives, Park went to numerous gyms, swimming pools, daycare centers, and parks to analyze people’s behaviors and discussed with his colleagues who were also interested in games. During this process, the experience of organizing creative ideas through cooperation and discussions became a great foundation for his future research.
He observed some people quitting midway during a workout on treadmills because they were bored with working out alone. From this, Park embarked on developing a new style of game that allowed people to exercise together.
Park used the system on a treadmill, which recognizes the speed of the person running to automatically adjust the machine’s speed, to develop an interactive game platform for Swan Boat. The Swan Boat game is a race exercise game that adjusts the direction according to speed difference between two players. The game utilizes the difference of running speed between two people on treadmills to change the direction of the boat.
With the Swan Boat game, people can now play games and exercise at the same time. The technology also allows online access anywhere in the world, which means checking friends’ rankings at nearby gyms or homes, or even a World Gym Running Contest.
In addition, Park helped develop various next generation exercise games and life-based services, including the sparrow chirp application, which finds children that go astray, or an avatar game that utilizes the user’s daily life patterns. These results and papers attracted attention from international societies and have also won a number of awards.
Professor Song said, “There has been no precedent of receiving a Ph.D. at KAIST for developing games, however, Park’s case has given courage to many people that if you can create what is really required in everyday life, you can indeed receive a doctor’s degree.”
Park remarked, “I’d like to express my gratitude to my advisor, Professor Song, for giving me courage. I want to continue to make games that can help people’s lives in the future.”
Park will continue his work at the NASA Ames Research Center this June.
2014.02.27 View 10941 -
KAIST held its 2014 Commencement Ceremony
The KAIST Commencement Ceremony for 2014 was held on Friday, 21st February, at Sports Complex, KAIST.
On this day, a total of 2,619 students
received their degrees. This included 499 doctorates, 1,220 masters, and 900 students with bachelor’s degrees. Since its establishment in 1971,
KAIST has produced 9,881 Ph.D., 25,161 MA and 13,693 BA,
which amounts to 48,735 scientific and engineering personnel.
The former Minister for Science and Technology
of the Republic of Korea, Dr. KunMo Chung, received an honorary doctorate for his effort in establishing the Korea Advanced Institute of Science (KAIS) to foster talented scientists and engineers, thus contributing to the significant growth
of Korea that has led it to stand as a scientifically advanced nation today.
The student graduating with summa cum laude was Jang-Geun
Kim from the Department of Biological Sciences. Mr. Kim received the Minister of Science, ICT and
Future Planning Award.
Mr. Kim said, “I am honored to receive the
award from the minister. I hope a lot of talented students will go onto science and
engineering field, so that Korea can earn a place among the technologically
elite countries.” Jang-Geun Kim will continue his
study of genomic medicine at KAIST graduate school.
President Steve Kang spoke
to the graduates:
“The whole nation has given their wholehearted support to KAIST so that students can study in a good environment. Please have
great aspirations and hopes, and continue to
broaden your knowledge and solve the challenges that humanity is facing today,
so our country and the world can advance.”
2014.02.27 View 9472 -
KAIST President Held One-year Anniversary Press Conference
President Steve Kang had a press conference
on February 25, 2014 at the Faculty Club on campus, commemorating the first
year of his presidency. About 30 different media representatives nationwide
attended the meeting.
At his first press conference on the anniversary of his tenure, President Kang
described what he has achieved in the past year, which were: 1) rebuilding the
campus culture to start a campaign for mutual respect, trust, and open
communication by holding meetings with the members of the KAIST community more
than 60 times, 2) establishing core values, creativity and challenge, to
enhance the fabric of the community, 3) restructuring of the university
administration, and 4) the announcement of the mid- and long-term development
plan.
He also mentioned that “2014 will be another exciting year for KAIST to make
more progress” and laid out a few major projects to be implemented this year:
launching of the “Committee for Engineering Education Innovation,” “Startup
KAIST” (an entrepreneurship program), “Greater Collaboration in Technology
Translation and Management with Seoul National University,” and “KAIST End Run”
(a global business incubation program).Explanation of 2014 Major Endeavors by President KangFor
the past decade, domestic engineering schools weighed SCI dissertation
publication more heavily in university evaluations, yielding a world-class
research level. However, such an approach resulted in placing less importance
on entrepreneurship, commercialization, or creating economic values.As a
result, engineering Professors have been evaluated as being too focused on theoretical
SCI dissertation research rather than practical research that could yield
economic benefits through commercialization of developed technology. In
addition, some have criticized that engineering universities have not educated
creative researchers demanded by the industry.KAIST
has begun responding to these criticisms and has made a few suggestions to strengthen
engineering education, promote entrepreneurship in engineers, and globalize Korean
venture companies.As
part of such efforts, KAIST established the KAIST Education and Research
Innovation Committee, composed of various individuals from the industry,
research institutes, alumni, faculty members, and others, to discuss ways to reinforce
engineering education.
A
course to encourage entrepreneurship will be implemented.Startup
KAIST will develop and commercialize innovative ideas from members of KAIST, and
the End Run project will enable students and faculty to establish a global,
venture company. KAIST hopes that a new entrepreneurial culture will be created
on campus, thereby the research success of KAIST members will lead to commercialization
and startups.KAIST
plans on releasing free internet lectures as part of its knowledge contribution
and sponsoring programs which will level the playing field in eduation.KAIST
will establish the KAIST Open Online Course (KOOC). An entrepreneurship
curriculum will be developed for KOOC. KAIST will start trials for KOOC from
2015, gradually expanding to include more courses.
2014.02.27 View 9671 -
Professor Yong-Tak Im of Mechanical Engineering Appointed as President of Korea Institute of Machinery and Materials
Yong-Tak Im, Professor of the Department of
Mechanical Engineering at KAIST, was sworn in on February 25, 2014 as
the 16th president of the Korea Institute of Machinery and Materials
(KIMM), a leading government-funded research institution in Korea. KIMM was
established in 1976 to contribute to the development of
Korea through the invention of source technology and technology transfer in
mechanical engineering.
President Im graduated from Seoul National
University, obtaining degrees of Bachelor of Science and Master’s in mechanical
engineering. He later studied at the University of California in Berkeley and
received a doctoral degree in mechanical engineering.
After working as an assistant professor of
the Industrial and Systems Engineering at the Ohio State University,
President Im joined KAIST as a professor of mechanical engineering in 1989.
President Im took many important posts at
KAIST, including Dean of Planning Office, Dean of External Affairs and Public
Relations Office, and Associate Vice President of Special Projects and
Institutional Relations, making a great addition to the university’s endeavors for
globalization.
Among the awards President Im received was the
William Johnson Award in 2007 presented by the Advances in Materials and
Processing Technologies, the Research Achievement Award in 2010 by the Global
Congress on Manufacturing and Management, and the Presidential Award in 2012 by
the Republic of Korea. He was also elected as the vice president of the Korean
Society of Mechanical Engineers, the largest association of professionals in
the mechanical engineering field in Korea.
President Im is currently a professor at
POSCO, an internationally known Korean steel company, and a member of the
Korean Academy of Science and Technology and the National Academy of
Engineering of Korea, respectively.
President Im will serve KIMM for three
years until February 24, 2017.
2014.02.25 View 11266 -
Phys.org: Researchers develop non-iridescent, structural, full-spectrum pigments for reflective displays
The latest research work by Professor Shin-Hyun Kim of Chemical and Biomolecular Engineering at KAIST on the “microcapsulation og photonic crystals using osmotic pressure” has been published by Phys.org, a leading web-based science, research and technology news. For the articles, please click the link below:February 20, 2014Researchers develop non-iridescent, structural, full-spectrum pigments for reflective displayshttp://phys.org/news/2014-02-non-iridescent-full-spectrum-pigments.html
2014.02.21 View 8552 -
A student club for education donation at KAIST received an award from the City of Daejeon Education Superintendent
One of the student clubs at KAIST, the Midam Scholarship Fund, was awarded by the education superintendent of Daejeon City in recognition of its contributions to the education benefits of underprivileged students in the region.The Midam Scholarship Fund was established in 2009, and since then, it has helped many teenage students who are suffering financial hardships through knowledge donation. The Fund organized private classes and mentoring programs for the students as well as collaborating with other education donation clubs at seven different universities in Korea.The award ceremony was held on February 20th at the City Hall in Daejeon.
2014.02.21 View 7820 -
Former Minister of Science and Technology, Dr. KunMo Chung, Awarded KAIST Honorary Doctorate
KAIST will confer an honorary doctorate on former minister of Science and Technology, Dr. KunMo Chung, at the 2014 KAIST graduation ceremony on Friday, February, 21.Dr. Chung presented the Survey Report for the Establishment of the Korea Advanced Institute of Science (KAIS) to the United States Agency for International Development (USAID) in 1969. This proposal for nurturing the advanced science technology elite and boost Korean industrial development became the foundation for KAIS, which is now known as KAIST.After passing the KAIS Foundation Law in 1970, Dr. Chung designed the faculty room, secured faculty members, and acquired a $6 million education loan from the USAID. Dr. Chung devoted himself to research and teaching. His first appointment was the position of assistant professor at the University of South Florida, followed by research professor positions at the Princeton Nuclear Fusion Research Center and MIT Nuclear Engineering, and an associate professor position in the Department of Electrophysics at the Polytechnic Institute of New York.When KAIS was founded on Feb. 16, 1971, 31-year-old Dr. KunMo Chung became the provost and a professor in the Electronic and Electrical Science Department where he made outstanding contributions to the development of science and technology in Korea.
2014.02.21 View 10727 -
KAIST to Hold "Data Science Workshop"
Discussion regarding the scientific utilization of data and its future possibilityThe upcoming 2nd Data Science Workshop is to be held at COEX, Seoul, on 27th February‘Big Data’ has attracted the explosion of interest in recent years. KAIST has arranged a platform of discussion for the utilization of data science and its possible usage in the future.The Department of Knowledge Services Engineering at KAIST is to hold the 2nd Knowledge Services Workshop under the topic of "Data Science for Industry" at COEX, Seoul, on 27th February.Data Science refers to using scientific approach to extract generalized knowledge from the data in order to find meaningful information.With the era of Big Data ahead, the amounts of data produced by the industry are rapidly increasing. The companies have recognized the significance of the data, however, the understanding of its systematic utilization is yet to be realized."Data Science Workshop" has been organized to discuss on how to create a new value using the data compiled by the industry. Lectures are to be given by four leading professionals in the field of data science, who are the professors from Department of Knowledge Services Engineering at KAIST. The head of the department, Mun-Yong Lee, said, “This workshop will be an opportunity for the companies that are considering introducing data science, as well as the students who are interested in the related field, to think about the possibility and future of data science.”Pre-registration for the workshop is currently open until 23rd February on the official website (http://kseworkshop.kaist.ac.kr).
2014.02.20 View 9418