Directing Zeolite Structures into Hierarchically Nanoporous Architectures
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Na, Kyungsu | - |
| dc.contributor.author | Jo, Changbum | - |
| dc.contributor.author | Kim, Jeongnam | - |
| dc.contributor.author | Cho, Kanghee | - |
| dc.contributor.author | Jung, Jinhwan | - |
| dc.contributor.author | Seo, Yongbeom | - |
| dc.contributor.author | Messinger, Robert J | - |
| dc.contributor.author | Chmelka, Bradley F | - |
| dc.contributor.author | Ryoo, Ryong | - |
| dc.date.accessioned | 2011-09-06 | - |
| dc.date.available | 2011-09-06 | - |
| dc.date.issued | 2011-07-15 | - |
| dc.identifier.citation | Science, Vol.333, pp.328-332 | en |
| dc.identifier.issn | 0036-8075 | - |
| dc.identifier.uri | http://hdl.handle.net/10203/25100 | - |
| dc.description.abstract | Crystalline mesoporous molecular sieves have long been sought as solid acid catalysts for organic reactions involving large molecules. We synthesized a series of mesoporous molecular sieves that possess crystalline microporous walls with zeolitelike frameworks, extending the application of zeolites to the mesoporous range of 2 to 50 nanometers. Hexagonally ordered or disordered mesopores are generated by surfactant aggregates, whereas multiple cationic moieties in the surfactant head groups direct the crystallization of microporous aluminosilicate frameworks. The wall thicknesses, framework topologies, and mesopore sizes can be controlled with different surfactants. The molecular sieves are highly active as catalysts for various acid-catalyzed reactions of bulky molecular substrates, compared with conventional zeolites and ordered mesoporous amorphous materials. | en |
| dc.description.sponsorship | This work was supported by the National Honor Scientist Program (20100029665) and World Class University Program (R31-2010-000-10071-0) of the Ministry of Education, Science and Technology in Korea. The work at UCSB was supported by the U.S. NSF under grant CHE-0924654 and the U.S. Department of Energy through the Institute of Multiscale Materials Studies at Los Alamos National Laboratory and Basic Energy Sciences grant DE-FG02-03ER15467. R.J.M. is grateful to the Warren and Katharine Schlinger Foundation for a doctoral research fellowship. Solid-state NMR measurements were conducted using the Central Facilities of the NSF-supported UCSB Material Research Laboratory through grant DMR-05-20415. A patent has been filed by KAIST that claims new materials, preparation method, and catalytic applications thereof [10-2010-0064200, Korea, and PCT/KR2011/004128, Patent Cooperation Treaty (PCT)]. Author contributions: R.R. planned and supervised the project; K.N and R.R. wrote the manuscript; K.N., C.J., J.K., and J.J. synthesized surfactants and porous materials and performed XRD, SEM, and adsorption; K.N. performed catalytic investigations; K.C. performed TEM investigations; Y.S. analyzed acidity with 31P NMR; and R.J.M. and B.F.C. performed 2D NMR investigations. B.F.C. (bradc@engineering.ucsb.edu) was responsible for the 2D NMR part. The authors declare that there are no competing financial interests. R.R., K.N., C.J., J.K., and J.J. are applicants for a patent related to this work. The patent deals with an invention of new materials and their synthesis method and applications. The patent was submitted to Korea on 5 July 2010 with application no. 10-2010-0064200 and submitted to PCT on 7 June 2011 with application no. PCT/KR2011/004128. | en |
| dc.language.iso | en_US | en |
| dc.publisher | American Association for the Advancement of Science | en |
| dc.title | Directing Zeolite Structures into Hierarchically Nanoporous Architectures | en |
| dc.type | Article | en |
| dc.identifier.doi | 10.1126/science.1204452 | - |
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