工业级卡托辛成分分析及其双核二茂铁制备工艺

2, 2-bis (ethylferrocenyl) propane (catocene) has become one of the main burning rate catalysts in composite solid propellant because of its excellent catalytic activity and pharmaceutical technology. The composition of industrial grade products is also very complicated due to the complex synthesis process of catocene, which makes the performance of related products difficult to be guaranteed. The composition of industrial grade catocene is analyzed by using gas chromatography-mass spectrometry and high performance liquid chromatography. According to the structural characteristics of the components and the differences in their polarities and solubilities, the components of catocene were separated and purified by using column chromatography and dissolution-precipitation method, and the binuclear ferrocene containing two ferrocene units in the molecular structure with high content was obtained. It is found that the total contents of binuclear ferrocene and mononuclear ferrocene in the industrial grade catocene are 84.82% and 15.18%, respectively. The results show that column chromatography can be used to obtain binuclear ferrocene with a content greater than 99.0%; the dissolution-precipitation method can be used to obtain binuclear ferrocene with a content greater than 96.5%, and the proposed method has the characteristics of large-scale preparation, simple operation and low cost, etc.