Castor oil catalytic hydrogenation reaction monitored by Raman spectroscopy

摘要

In order to compare the behavior and physical chemistry properties of metallic catalysts supported on zeolites and their influence on the hydrogenation of castor oil, catalysts with different nickel contents supported on NaY zeolites were prepared and characterized. The NiNaY catalysts were compared with commercial Ni-Raney. Results indicate that the catalysts supported on zeolite with a nickel content of 5.0 wt./100 were more effective than Ni-Raney catalyst in the hydrogenation of castor oil. In this work, we used Raman spectroscopy as an alternative method to determine the degree of hydrogenation. The results indicate that the Raman spectroscopy is faster than the conventional Wijs chemical method, more economical, and has an equivalent degree of precision regarding the iodide index.