Application of IR spectrum to the research on coordination mechanisms of organic carboxylic acid during homogeneous precipitation

作者：Mei Yan; Nie Zuo-ren^*; Wang Wei

来源：Spectroscopy and Spectral Analysis, 2007, 27(2): 254-258.

• IR spectra
• organic carboxylic acid
• homogeneous precipitation method
• mechanism

Infrared (IR) spectrum, X-ray diffraction (XRD) and transmission electron microscope (TEM) were used to study and characterize the coordination mechanisms, products and morphology of organic carboxylic acid during homogeneous precipitation in the system of Ce(NO3)(2)center dot 6H(2)O and urea solution. The results showed that monocarboxylic acid stearic acid played a role of surfactant, and the product was still orthorhombic Ce2O(CO3)(2)center dot H2O with a high crystallization degree. In turn, duality-carboxylic acid tartaric acid and tri-carboxylic acid citric acid were combined with Ce3+ to form chelate citric acid and cerium tartaric acid, respectively. The results were caused by different mechanisms of reaction in the solution.

• 出版日期2007-2
• 单位北京工业大学