摘要
Layered double hydroxides（LDHs） are a class of synthetic anion clays, characterized by the formula [MⅡ1-xMⅢx（OH）2]x＋（An-）x/n5yH2O（where M=metal and A=anion, usually carbonate）[1-3]. A large number of LDHs with a wide variety of MⅡ-MⅢ cation pairs including MⅠ-MⅢ（e.g., Li-Al） and MⅡ-MⅣ（e.g., Co-Ti） have been reported. Thus the identities of the cations（MⅠ, MⅡ, MⅢ and MⅣ） and the interlayer anion（An-） together with the value of the stoichiometric coefficient（x） may vary widely, giving rise to a large class of isostructural materials. As a result,
Layered double hydroxides（LDHs） are a class of synthetic anion clays, characterized by the formula [MⅡ1-xMⅢx（OH）2]x＋（An-）x/n5yH2O（where M=metal and A=anion, usually carbonate）[1-3]. A large number of LDHs with a wide variety of MⅡ-MⅢ cation pairs including MⅠ-MⅢ（e.g., Li-Al） and MⅡ-MⅣ（e.g., Co-Ti） have been reported. Thus the identities of the cations（MⅠ, MⅡ, MⅢ and MⅣ） and the interlayer anion（An-） together with the value of the stoichiometric coefficient（x） may vary widely, giving rise to a large class of isostructural materials. As a result,
基金
Supported by Excellent Young Scholars Research Fund of Beijing Institute of Technology(No.000Y05-22)
the Key Labora-tory of Beijing City on Preparation
Processing of Novel Polymer Materials(No.SYS100100420) in Beijing University of ChemicalTechnology.
