Synthesis and characterization of manganese-modified MCM-41

Manganese-modified mesoporous MCM-41 molecular sieves were synthesized at the absence of alkaline metal ions under mild alkaline condition using cetylpyridinium bromide surfactant as a template, and characterized with X-ray diffraction, N 2 adsorption, transmission electron microscopy, electron spin...

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Bibliographic Details
Published in:Materials chemistry and physics 2003-01, Vol.77 (1), p.299-303
Main Authors: Yuan, Zhong-Yong, Ma, Hong-Tao, Luo, Qing, Zhou, Wuzong
Format: Article
Language:English
Subjects:
Chemistry
ESR
Exact sciences and technology
General and physical chemistry
Ion-exchange
Manganese
MCM-41
Mesoporous molecular sieve
MnMCM-41
Surface physical chemistry
Zeolites: preparations and properties
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Summary:Manganese-modified mesoporous MCM-41 molecular sieves were synthesized at the absence of alkaline metal ions under mild alkaline condition using cetylpyridinium bromide surfactant as a template, and characterized with X-ray diffraction, N 2 adsorption, transmission electron microscopy, electron spin resonance (ESR), and nuclear magnetic resonance (NMR) spectroscopies. The synthesized MnMCM-41 has a high pore volume of 1.30 cm 3 g −1 with a corresponding surface area of 1510 m 2 g −1. The ESR and 29 Si MAS NMR spectra revealed the presence of framework manganese ions in either the as-synthesized or calcined forms.
ISSN:0254-0584
1879-3312
DOI:10.1016/S0254-0584(01)00605-8