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Citation: Zhang Zhao-Rong, Suo Ji-Shuan, Zhang Xiao-Ming, Li Shu-Ben. A Novel Synthesis Method for MCM-41 Mesoporous Silica Molecular Sieves[J]. Acta Physico-Chimica Sinica, ;1998, 14(03): 243-248. doi: 10.3866/PKU.WHXB19980310 shu

A Novel Synthesis Method for MCM-41 Mesoporous Silica Molecular Sieves

1.
State Key Laboratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics,Academia Sinica,Lanzhou 730000

Received Date: 30 June 1997
Available Online: 15 March 1998

High quality MCM-41mesoporous silica molecular sieves were synthesized in high yield via improved S+X-I+ assembly pathway, by using cetylpyridinium bromide(CPBr) as template and tetraethyl orthosilicate(TEOS) as silica source. The calcination process of as-synthesized samples was optimized on the basis of TG-DTA results. Thus typical MCM-41 sample obtained was characterized by powder X-ray diffraction(XRD) and N2 adsorption-desorption techniques. The effects of CPBr, TEOS, HCl and H2O contents on the MCM-41 mesostucture, as well as the mechanistic steps involved in the formation of the mesophase were also investigated by XRD. It was found that. the titled crystal phase was developed through lamellar to hexa nal mesophase transformation.
- Cetylpyridinium bromide,
- Template,
- MCM-41 mesoporous silica molecular sieve,
- Synthesis
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