摘要
对碳酸化法、纯碱法制备碱式碳酸镁形成机制进行研究，发现碱式碳酸镁Ｍｇ５（ＣＯ３）４（ＯＨ）２·４Ｈ２Ｏ存在着前驱状态。运用化学分析、ＩＲ、ＸＲＤ对其进行研究，发现该前驱物相为Ｍｇ５（ＣＯ３）４（ＯＨ）２·８Ｈ２Ｏ，而不是报道的Ｍｇ５（ＣＯ３）４（ＯＨ）２·５Ｈ２Ｏ或者ＭｇＣＯ３·２Ｈ２Ｏ，该前驱物相与Ｍｇ５（ＣＯ３）４（ＯＨ）２·４Ｈ２Ｏ极为相似，不同之处是含有较多的水分子。
t is reported that there is a
preceding state of basic magnesium carbonate by studying its formation mechanism with
carbonation and soda methods.The preceding state is Mg5(CO3)4(OH)28H2O rather than the
reported Mg5(CO3)4(OH)25H2O or MgCO32H2O.This is supported by the results of chemical
analysis,IR spectrum and XRD data.This preceding state is very similar to basic magnesium
carbonate except its having higher H2O contents.
出处
《化学试剂》
CAS
CSCD
1999年第3期135-137,168,共4页
Chemical Reagents
基金
河北省自然科学基金
关键词
碱式碳酸镁
前驱状态
碳酸镁
形成机理
XRD
IR
basic magnesium
carbonate,preceding state,Mg5(CO3)4(OH)28H2O,XRD,IR spectrum
