The invention discloses a layered double hydroxides LDH I2 I2 CO32 whisker and its preparation method and application. The chemical formula of the layered double metal hydroxide LDH I2 CO32 whisker is Mg6Al2 (OH) 14I2CO3. 5H2O, and the whiskers are precipitated, washed and dried by metal cation Mg2+, Al3+ and anion I, CO32, and OH. The present invention provides a layered double metal hydroxide LDH I2 CO32 whisker as a whisker like hydrotalcite compound, which has the function of toughening and strengthening of the whisker, the adjustable pore size, the larger specific surface area and interlayer ion interchangeability, and the toughening and reinforcing material. It has a very wide application prospect in the fields of flame retardant and adsorption materials. The preparation method provided by the invention has simple and easy operation and low cost, and is suitable for large-scale popularization and application.
【技术实现步骤摘要】
一种层状双金属氢氧化物LDH-I2-CO32-晶须及其制备方法和应用
本专利技术涉及无机材料
,具体地,涉及一种层状双金属氢氧化物LDH-I2-CO32-晶须及其制备方法和应用。
技术介绍
层状双金属氢氧化物(LayeredDoubleHydroxide,LDH)是水滑石(Hydrotalcite,HT)和类水滑石化合物(Hydrotalcite-LikeCompounds,HTLc)的统称,是一类重要的无机功能材料,具有催化、吸附、阻燃等功能,是一种环保型的多功能无机材料。最典型的LDH是Mg6Al2(OH)16CO3·4H2O,也称镁铝水滑石,如果此镁铝水滑石中的Mg2+、Al3+或CO32-离子被其他离子所取代,即可得到类水滑石(HTLc)。HTLc的通式是:(其中M2+为二价金属离子,如Mg2+、Ni2+、Co2+、Zn2+、Cu2+等;M3+为三价金属离子,如Al3+、Cr3+、Fe3+、Sc3+等;A为层间阴离子,如CO32-、NO3-、Cl-、SO42-、PO43-、C6H4(COO)22-等;m为层间结合水数目)。由所组成的板层称为金属板层, ...
【技术保护点】
1.一种层状双金属氢氧化物LDH‑I2‑CO32‑晶须,其特征在于,所述晶须的化学式为Mg6Al2(OH)14I2CO3·5H2O。
【技术特征摘要】
1.一种层状双金属氢氧化物LDH-I2-CO32-晶须,其特征在于,所述晶须的化学式为Mg6Al2(OH)14I2CO3·5H2O。2.权利要求1所述层状双金属氢氧化物LDH-I2-CO32-晶须的制备方法,其特征在于,包括如下步骤:S1.配制MgI2·8H2O和Al(NO3)3·9H2O的混合溶液A,用0.05~0.15mol/L的NaOH溶液调节pH至7.45~7.55;所述混合溶液A中Mg2+的浓度为2.10~2.70mol/L,Al3+的浓度为0.70~0.90mol/L;S2.配制浓度为0.95~1.05mol/L的NaCO3溶液,并用NaCO3溶液调节S1所得混合溶液至pH为8.05~8.25后,置于4~45℃下反应140~149h生成沉淀,过滤并洗涤沉淀,烘干后即得所述层状双金属氢氧化物LDH-I2-CO32-晶须。3.根据权利要求2所述制备方法,其特征在于,S1中调节pH...
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