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以水滑石 Mg4Al2 (OH) 12 CO3· 4H2 O为前体 ,以乙二醇为介质 ,用离子交换法制备了对苯二甲酸柱撑水滑石 Mg4Al2 (OH) 12 [C6 H4(COO) 2 ],并用 XRD、FT-IR、DTA测试技术对样品进行了表征 .结果表明 ,通过控制离子交换条件 ,[C6 H4(COO) 2 ]2 -可以完全取代水滑石层间的 CO2 -3;柱撑水滑石具有良好的层状结构 ,由于离子交换温度的不同 (70~ 1 5 0℃ ) ,其层间距略有变化 (1 .3 8~ 1 .45 nm) ;柱撑水滑石层间的 [C6 H4-(COO) 2 ]2 -在 5 5 3℃左右氧化分解
Hydrotalcite Mg4Al2 (OH) 12 [C6H4 (COO) 2] was synthesized by ion exchange method using hydrotalcite Mg4Al2 (OH) 12CO3 · 4H2O as the precursor and ethylene glycol as the medium. , And the samples were characterized by XRD, FT-IR and DTA. The results show that [C6H4 (COO) 2] 2- can completely substitute CO2-3 between hydrotalcites by controlling the ion exchange conditions; The hydrotalcite has a good layered structure. Due to the different ion exchange temperature (70 ~ 150 ℃), the interlayer spacing of the hydrotalcite varies slightly (from 1.38 ~ 1.45 nm) C6 H4- (COO) 2] 2 - at about 5 5 3 ℃ oxidative decomposition