The photocatalytic degradation activities of titanium dioxide composite system modified by phosphotungstic acid/ammonium oxalate using methyl orange as model pollutant were studied.
以磷钨酸、草酸铵、二氧化钛三种物质组成三元混合光催化剂体系，用甲基橙为模拟污染物表征该体系的光催化降解活性。
The ferrous oxalate with crystal water was prepared with ferrous ammonium sulfate and oxalic acid in acid medium.
采用硫酸亚铁铵和草酸溶液在酸性介质条件下合成含有结晶水的草酸亚铁。
Study is made of a new process for directly extraction of the cobalt oxalate from ammonium oxalate in the acid solution directly dissolved from lithium cobaltate.
目的：探讨采用草酸铵作为提取溶剂和超声波振荡处理法提取菠萝皮渣果胶的工艺条件。
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