NDLI: Effect of different lanthanum source and preparation method on the lanthanum-doped mesoporous SBA-15 synthesis

Content Provider	Springer Nature Link
Author	Sheng, Xiaoli Zhou, Yuming Duan, Yongzheng Zhang, Yiwei Xue, Mengwei
Copyright Year	2010
Abstract	Lanthanum-substituted mesoporous SBA-15 molecular sieve has been prepared by direct synthesis and post-synthesis procedures using lanthanum nitrate or lanthanum chloride as lanthanum source. Characterizations by atomic absorption, X-ray diffraction, nitrogen adsorption, UV–Vis spectra analysis, FT–IR spectroscopy and scanning electron microscopy have been carried out to evaluate the efficiency of the incorporation of lanthanum by these procedures. Results showed that Lanthanum was well incorporated into the hexagonal framework of SBA-15 molecular sieves by these two procedures. These LaSBA-15 mesoporous molecular sieves retain the hexagonal order and physical properties of siliceous SBA-15 material. Compared to lanthanum chloride, the lanthanum nitrate is a suitable lanthanum source, which can match the hydrolysis rate of silicon precursor and composite materials possess larger specific surface area, uniform mesopore size distribution.
Starting Page	677
Ending Page	683
Page Count	7
File Format	PDF
ISSN	13802224
Journal	Journal of Porous Materials
Volume Number	18
Issue Number	6
e-ISSN	15734854
Language	English
Publisher	Springer US
Publisher Date	2010-11-02
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mesoporous silica SBA-15 Lanthanum Characterization Catalysis Physical Chemistry Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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