使用X射线衍射仪对不同原料比例的烧出的钛酸铁钠片晶进行XRD分析。根据钛酸铁钠（Na0.75Fe0.75Ti0.25O2）片晶的化学式，在钛酸铁钠中Na与Ti的摩尔比为3 : 1的条件下，我们推测如果仅仅以钛铁矿为原料可能会导致铁元素过低，所以我们尝试通过外加Fe元素，改变Fe与Ti的摩尔比，合成Na0.75Fe0.75Ti0.25 O2片晶。通过不断调整原料的比例，利用XRD进行分析原料比例对产物组成的影响。从而确定最佳的原料比例。

XRD analysis of sintered sodium ferric titanate tablets with different raw material proportions was carried out by X-ray diffractometer. According to the chemical formula of sodium ferric titanate (Na0.75Fe0.75Ti0.25O2) sheet, the molar ratio of Na to Ti in sodium ferric titanate is 3: Under the condition of 1, we speculate that if ilmenite is used as raw material only, iron element may be too low, so we try to synthesize Na0.75Fe0.75Ti0.25O2 crystal by adding Fe element and changing the molar ratio of Fe to Ti. By adjusting the proportion of raw materials, XRD was used to analyze the effect of raw material proportion on product composition. Thus the optimum ratio of raw materials is determined.