Abstract
A rhodium(I) dicarbonyl on HY zeolite prepared from [Rh(CH3COCHCOCH3)(CO)2] were charaterised by Attenuated Total Reflectance Fourier Transformed Infrared (ATR FTIR) and X-ray Photoelectron Spectroscopy (XPS). The ATR FTIR spectra of the anchored rhodium complex showed that [Rh(CH3COCHCOCH3)(CO)2] reacted with the HY zeolite by loosing the [CH3COCHCOCH3]− ligand to form Rh(CO)2/HY zeolite and [CH3COCHCOCH3]/HY zeolite. The sharpness of the v(CO) bands measured by the ATR FTIR showed that the rhodium(I) dicarbonyl complex are distributed fairly uniform over the zeolite support. This heterogeneous catalyst was monitored for the oxidative addition of methyl iodide in the liquid phase, followed by reductive elimination of acetyl iodide upon treatment with CO gas.These reactions were monitored by following the carbonyl stretching frequencies from ATR FTIR measurements and the change in binding energy of the Rh 3d5/2 photoelectron line as measured by XPS, observed rate constants determined were mutually consistent with each other.
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