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Citation: SUN You-Song, JIAO Qing-Ze, ZHAO Yun, Evans D. G., DUAN Xue. Assembly and Structural Characterization of Terephthalate-pillared Hydrotalcites[J]. Chinese Journal of Applied Chemistry, ;2001, 18(10): 781-784. shu

Assembly and Structural Characterization of Terephthalate-pillared Hydrotalcites

1.
Key Laboratory of Science and Technology of Controllable Chemical Reaction, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029

Received Date: 30 December 2000
Available Online: 22 May 2001
Fund Project: 国家自然科学基金(29973004) (29973004)中国石油化工总公司(X599012)资助项目 (X599012)

Terephthalate-pillared hydrotalcites, Mg₄Al₂(OH)₁₂[C₆H₄(COO)₂], were successfully synthesized through Mg₄Al₂(OH)₁₂CO₃·4H₂O precursor in an organic solvent by ion exchange. The samples thereby obtained were characterized by XRD, FT-IR and DTA. The results show that the initial interlayer carbonates of the hydrotalcite can be completely replaced by terephthalic anions under special controlled conditions. The pillared hydrotalcites have good layered structure and the interlayer distance varies slightly (1.38~1.45 nm) with the exchange temperature (70~150℃). The interlayer terephthalic anions decompose at about 553℃.
- hydrotalcite,
- pillared hydrotalcite,
- terephthalic acid,
- synthesis,
- characterization
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