PdCl_4^(2-)配离子插层类水滑石的组装及其结构特征

Assembly and Structural Characterization of PdCl_4^(2-)-Intercalated LDHs

以Mg0.76Al0.24(OH)2(NO3)0.24·0.32H2OLDHs为前体,由离子交换法实现了层间为含Pd阴离子LDHs的插层组装。用XRD、FT鄄IR、TG鄄DTA和ICP等手段对样品进行表征和分析,结果表明Pd以PdCl42-的形式位于层间,反应24h达到最大插层限度,配离子平面平行于层板排布,3个PdCl42-配离子构成的几何空间的中心存在1个NO3-离子以维持插层结构能量最低。所得插层产物的化学组成式为Mg0.74Al0.26(OH)2(PdCl4)0.11(NO3)0.04·0.62H2O。

PdCl42--Intercalated LDHs have been synthesized by the ion exchange method using Mg0.76Al0.24(OH)2(NO3)0.24·0.32H2O LDHs as a precursor. The precursor and intercalates have been characterized and analyzed by means of XRD, FT-IR, TG-DTA and ICP. The PdCl42- anions were shown to be inserted in the interlayer space in a horizontal orientation. After a reaction time of 24 h the loading of PdCl42- anions reached a maximum. It was found that NO3- anions were co-intercalated together with PdCl42- anions with a mol...