The Preparation and Characterization of Solid Superacid S2O82-/SnO2-SiO2

Abstract:

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The new type of solid superacid S2O82-/SnO2-SiO2 was prepared by precipitation and hydrothermal aging method with ammonium persufate as soaker instead of sulphuric acid. The samples with different tin oxide content were characterized by FT-IR, XRD, BET, TG/DTA and Hammett indicators techniques. Catalytic activities for esterification of butanol and acetic acid were also investigated. As a result, most sulfate-ion in surface of S2O82-/SnO2-SiO2 coordinate with Sn bidentatly, and the acidic strength of S2O82-/SnO2-SiO2 is related to the content of tin oxide. Besides, introducing appropriate Si can improve the combination of the tin with SO42- thus increases the amount of acid. Catalyst S2O82-/SnO2-SiO2 reveals high catalytic activity and stability in the esterification at very large range of composition.

Info:

Periodical:

Advanced Materials Research (Volumes 335-336)

Edited by:

Yun-Hae Kim, Prasad Yarlagadda, Xiaodong Zhang and Zhijiu Ai

Pages:

212-217

DOI:

10.4028/www.scientific.net/AMR.335-336.212

Citation:

X. Y. Hao et al., "The Preparation and Characterization of Solid Superacid S2O82-/SnO2-SiO2", Advanced Materials Research, Vols. 335-336, pp. 212-217, 2011

Online since:

September 2011

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Price:

$35.00

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