类水滑石［Cd_xMg_（6－x）Al_2（OH）_（16）］^（2＋）［S·2

Synthesis and Characterization of Hydrotalcite-like[Cd_xMg_(6-x)Al_2(OH)_(16)]￣(2+)[S·2H_2O]￣(2-)

用中温水热法合成了类水滑石［Ｃｄ_ｘＭｇ_（６－ｘ）Ａｌ_２（ＯＨ）_（１６）］^（２＋）［Ｓ·２Ｈ_２Ｏ］^（２－），探讨了ｐＨ值、投入Ｃｄ^（２＋）离子的量以及硫化时间等条件对合成的影响，并用ＸＲＤ、ＦＴ－ＩＲ、ＤＴＡ－ＴＧ等手段进行了表征，找出了合成层间嵌入Ｓ^（２－）离子的含Ｃｄ类水滑石的最佳条件．

Hydrotalcite-like [Cd_xMg_(6-x)Al_2(OH)_16]￣2+[S·2H_2O]￣2-was synthesized hydrothermally and characterized by means of XRD,FT-IR,DTA-TG etc.,The influence of pH,Cd￣2+ ionic concentration and sulphuration time on the synthesis was studied.The synthetic optimal conditions are pH=9～10,[Cd￣2+]/[Mg2+]=1:5～1:9 and sulphuration time 5 min. It is suggested that Mg￣2+ ions can be only partially substituted by Cd￣2+ ions in the hydrotalcite-like.