Surface functionalization of SBA-15 by the solvent-free method
- Mesoscopic Laboratory, Department of Chemistry, Nanjing University, 22 Hankou Road, Nanjing City, Jiangsu Province 210093 (China)
A solvent-free technique was employed for fast modification of mesoporous materials. Copper, chromium and iron oxide species could be highly dispersed in SBA-15 by manually grinding the corresponding precursor salts and the host, followed by calcinations for the first time. This method is more effective to spontaneously disperse oxide species onto SBA-15 than impregnation, probably forming monolayer or submonolayer dispersion of salts or oxides. Besides, Cr(VI) species dominate in the mixing sample while Cr(III) species dominate in the impregnation one. In the temperature programmed surface reaction of nitrosamines, the sample prepared by solvent-free method showed a higher catalytic activity than the impregnation one.
- OSTI ID:
- 20653402
- Journal Information:
- Journal of Solid State Chemistry, Vol. 177, Issue 10; Other Information: DOI: 10.1016/j.jssc.2004.07.013; PII: S0022-4596(04)00393-7; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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