竞争原位制备活性碳酸钙

以椰子油为活化剂前驱体，采用竞争原位制备活性碳酸钙，即在制备活性碳酸钙中碳化和活化同时进行．研究了碳化温度、活化剂前驱体添加量对活化度的影响，采用沉降体积（以乙醇为溶剂）表征样品．结果显示，椰子油加入量为碳酸钙理论产量（干基）的1．5％时，碳酸钙产品的活化度达到99％，沉降体积为9．5mL／g．FTIR、DTG、TEM分析表明：竞争原位过程为ca2＋、活化剂、CO3^2-相互作用形成脂肪酸钙包覆的具有空间网络隔室结构的碳酸钙的过程．

Competitively In-situ Preparation of Active Calcium Carbonate

Using coconut oil as the precursor of active agent,competitively in-situ method was adopted to prepare active calcium carbonate,i.e.the activation was simultaneous with the carbonation in the process of preparation of active calcium carbonate.The effects of carbonated temperature and dosage of the precursor of active agent on active ratio were inves-tigated.The sample was characterized by settling volume(using ethanol absolute as solvent).The result indicated that the active ratio of sample was 99% and sett...