期刊
MATERIALS RESEARCH BULLETIN
卷 36, 期 9, 页码 1717-1720出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0025-5408(01)00645-6
关键词
nanostructures; chemical synthesis
Using tetraethyl orthosilicate as a silica source and cetyltrimethylammonium bromide as a template, MCM-48 mesoporous molecular sieves were synthesized with hydrothermal methods. Reducing the pH of the solution during synthesis improved the yield of MCM-48 and enhanced its stability. While the pH was adjusted to 5, a high yield of 98% was gained. XRD and N-2 adsorption-desorption isotherms were used to characterize the synthesized samples. These mesoporous molecular sieves showed high specific surface areas and ordered channel systems. (C) 2001 Elsevier Science Ltd. All rights reserved.
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