CTAB-assisted fabrication of mesoporous composite consisting of wormlike aluminosilicate shell and ordered MSU-S core

Journal Article · Sat Jan 15 00:00:00 EST 2005 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2004.09.034· OSTI ID:20721670

Shangru, Zhai ^[1]; Junlin, Zheng ^[1]; Dong, Wu ^[1]; Yuhan, Sun ^[1]; Feng, Deng ^[2]

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1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Number 27, Taoyuan Nan Lu, Taiyuan City, Shanxi Province 030001 (China)
2. State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 (China)

Novel mesoporous composites comprised of aluminosilicate shell with wormhole framework structure and well-ordered MSU-S core have been firstly prepared via treatment of MSU-S with NaAlO{sub 2} solution in the presence of cationic surfactant cetyltrimethylammonium bromide (CTAB). The obtained products were thoroughly characterized by XRD, HRTEM, N{sub 2} sorption isotherm, TG-DSC, {sup 27}Al MAS NMR and {sup 29}Si MAS NMR, etc. Characterization results based on these techniques revealed that the introduction of CTAB during the treatment process played a crucial role in the formation of mesoporous composite, otherwise the parent ordered MSU-S would be completely destroyed. Furthermore, aluminum content in the final product determined by ICP and EDAX was significantly increased compared to the parent MSU-S, thus assuming that CTAB added in this modification process led a key role in the introduction of Al into the final solid via self-assembly with additionally added AlO{sub 2}{sup -} and partly dissolved silicate species from the parent MSU-S particles. In addition, acidity and catalytic performance of the prepared mesoporous composite were also substantially improved in comparison to the parent MSU-S sample.

• OSTI ID: 20721670
• Journal Information: Journal of Solid State Chemistry, Vol. 178, Issue 1; Other Information: DOI: 10.1016/j.jssc.2004.09.034; PII: S0022-4596(04)00530-4; 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

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM 27
ALUMINIUM COMPOUNDS
CALORIMETRY
FABRICATION
NUCLEAR MAGNETIC RESONANCE
SILICATES
SILICON 29
SOLUTIONS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION