Efficient separation of terephthalate and phthalate anions by selective ion-exchange intercalation in the layered double hydroxide Ca2Al(OH)6•NO3•2H2O

被引：180

作者：

Millange, F ^{[1
]}

Walton, RI ^{[1
]}

Lei, LX ^{[1
]}

O'Hare, D ^{[1
]}

机构：

[1] Univ Oxford, Inorgan Chem Lab, Oxford OX1 3QR, England

来源：

CHEMISTRY OF MATERIALS | 2000年 / 12卷 / 07期

关键词：

D O I：

10.1021/cm0002057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The brucite-like Ca2+/Al3+ layered double hydroxide (LDH), Ca2Al(OH)(6). NO3. 2H(2)O, was synthesized using the coprecipitation method. The dicarboxylate anion 1,4-benzenedicarboxylate can be selectively intercalated into the layered double hydroxide Ca2Al(OH)(6). NO3. 2H(2)O from an aqueous solution containing an equimolar mixture of the 1,2- and 1,4-benzenedicarboxylates. Time-resolved in situ energy-dispersive X-ray diffraction studies of the competitive intercalation reaction reveal that initially both the 1,2- and the 1,4-benzenedicarboxylates are intercalated in the LDH, followed by replacement of the 1,2-benzenedicarboxylate by the 1,4-isomer as the reaction proceeds. The final thermodynamic product is Ca2Al(OH)(6).[1,4-C8H4O4](0.5). xH(2)O.

引用

页码：1990 / 1994

页数：5

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