期刊
SCIENCE
卷 333, 期 6040, 页码 328-332出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1204452
关键词
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资金
- National Honor Scientist Program [20100029665]
- Ministry of Education, Science and Technology in Korea [R31-2010-000-10071-0]
- U.S. NSF [CHE-0924654]
- U.S. Department of Energy through the Institute of Multiscale Materials Studies at Los Alamos National Laboratory and Basic Energy Sciences [DE-FG02-03ER15467]
- Warren and Katharine Schlinger Foundation
- Central Facilities of the NSF [DMR-05-20415]
- National Research Foundation of Korea [R31-2011-000-10071-0, 2007-0056088, R31-2010-000-10071-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Direct For Mathematical & Physical Scien [0924654, 0843934] Funding Source: National Science Foundation
- Division Of Chemistry [0924654] Funding Source: National Science Foundation
- Division Of Materials Research [0843934] Funding Source: National Science Foundation
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.
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