Chem. J. Chinese Universities ›› 1990, Vol. 11 ›› Issue (9): 933.
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Sun Tie1, Jiang Dazhen1, Liu Ziyang1, Li Ying1, Min Enze2, He Mingyuan2
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Abstract: Silica-intercalated hectorite (Si-CLH) with an 001 spacing of 17. 7Å was prepared by hydrolysis and oxidation of synthetic hectorite containing NH2(CH2)3Si(OC2H5)3 at 700℃. The results of high-temperatuer XRD and DTA show that the thermal stability of Si-CLH is higher than that of the parent hectorite. The spacing of pillared hectorite did not vary with changing cation in the interlayer regions. NH3-TPD and pyridine-adsorption IRindicate the presence of both Lewis and Bronsted acidity on the surface of these samples with weaker acid strength. Cracking activity of cumene of pillared hectorite is greatly higher than that of the parent hectorite. The presence of Mg or La retard the rate of active decay.
Key words: Hectorite, Silica-cross-linking, Cracking activity
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Sun Tie, Jiang Dazhen, Liu Ziyang, Li Ying, Min Enze, He Mingyuan. Studies on Synthesis and Characterization of Silica-Intercalated Hcctorite and Its Cation Function[J]. Chem. J. Chinese Universities, 1990, 11(9): 933.
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http://www.cjcu.jlu.edu.cn/EN/Y1990/V11/I9/933
