期刊
CERAMICS INTERNATIONAL
卷 41, 期 7, 页码 8809-8813出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.03.107
关键词
Nanostructured silicon carbide; Mesoporous carbon; Clinoptilolite zeolite; Magnesiothermal synthesis
Magnesiothermal synthesis of nanosized SiC has been successfully achieved from a mixture of the natural zeolite clinoptilolite and a high-surface area mesoporous carbon CMK-1, synthesized by impregnating a mesoporous silica template MCM-48 with sucrose, followed by carbonization in argon and removal of the silica template. Magnesium powder was used to initiate the self-combustion reaction. Removal of the alkaline and alkaline earth exchangeable cations from the clinoptilolite by ion exchange with NH4+ was essential for a good yield of product, which is also dependent on the use of excess of carbon. TEM confirmed the nanostructure and size of the 15-25 nm SiC product crystallites. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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