ABSTRACT:The kinetics of the hydroformylation of highmolecular-weight cis-1,4-polybutadiene in the presence of HRh(CO)(PPh 3 ) 3 and monochlorobenzene as a solvent were studied. The degree of conversion was examined by spectroscopic characterization with Fourier transform infrared and 1 H-NMR analysis. According to the 2 4 -factorial experimental design, the temperature, catalyst concentration, and pressure appear to be significant factors for the hydroformylation of cis-1,4-polybutadiene. The kinetic studies indicated that the hydroformylation was first-order with respect to the catalyst and carbon-carbon double-bond concentrations and H 2 /CO pressure (1:1 ratio). The effects of the H 2 /CO ratio in the synthesis gas and added triphenyl phosphine were also studied. The apparent activation energy for the hydroformylation of cis-1,4-polybutadiene over the temperature range of 60 -80°C was estimated to be 41 kJ/mol.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.