无机化学学报

PdCl₄^2-配离子插层类水滑石的组装及其结构特征

Assembly and Structural Characterization of PdCl₄^2--Intercalated LDHs

作者	单位
张祥征	北京化工大学可控化学反应科学与技术基础教育部重点实验室，北京 100029
李殿卿	北京化工大学可控化学反应科学与技术基础教育部重点实验室，北京 100029
蒲敏	北京化工大学可控化学反应科学与技术基础教育部重点实验室，北京 100029
D. G. Evans	北京化工大学可控化学反应科学与技术基础教育部重点实验室，北京 100029
段雪	北京化工大学可控化学反应科学与技术基础教育部重点实验室，北京 100029

摘要: 以Mg_0.76Al_0.24(OH)₂(NO₃)_{0.24·0.32H₂O LDHs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-IR、TG-DTA和ICP等手段对样品进行表征和分析，结果表明Pd以PdCl₄^2-的形式位于层间，反应24 h达到最大插层限度，配离子平面平行于层板排布，3个PdCl₄^2-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Mg_0.74Al_0.26(OH)₂(PdCl₄)_0.11(NO₃)_0.04·0.62H₂O。}

关键词: 水滑石插层 PdCl₄^2-配离子

基金项目:

Abstract: PdCl₄^2--Intercalated LDHs have been synthesized by the ion exchange method using _0.76Al_0.24(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 PdCl₄^2- anions were shown to be inserted in the interlayer space in a horizontal orientation. After a reaction time of 24 h the loading of PdCl₄^2- anions reached a maximum. It was found that NO₃^- anions were co-intercalated together with PdCl₄^2- anions with a molar ratio of NO₃^-/PdCl₄^2- of approximately 1∶3. The chemical composition of the fully PdCl₄^2--intercalated LDHs is Mg_0.74Al_0.26(OH)₂(PdCl₄)_0.11(NO₃)_0.04·0.62H₂O.}

Keywords: LDHs intercalation PdCl₄^2- complex ion

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张祥征,李殿卿,蒲敏,D. G. Evans,段雪.PdCl₄^2-配离子插层类水滑石的组装及其结构特征[J].无机化学学报,2004,20(3):267-272.

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