Hydrogenation of butynediol to cis-butenediol catalyzed by Pd-Zn-CaCO3: Reaction kinetics and modeling of a batch slurry reactor
Article first published online: 17 JUN 2004
Copyright © 1985 American Institute of Chemical Engineers
Volume 31, Issue 11, pages 1891–1903, November 1985
How to Cite
Chaudhari, R. V., Parande, M. G., Ramachandran, P. A., Brahme, P. H., Vadgaonkar, H. G. and Jaganathan, R. (1985), Hydrogenation of butynediol to cis-butenediol catalyzed by Pd-Zn-CaCO3: Reaction kinetics and modeling of a batch slurry reactor. AIChE J., 31: 1891–1903. doi: 10.1002/aic.690311114
- Issue published online: 17 JUN 2004
- Article first published online: 17 JUN 2004
- Manuscript Accepted: 6 DEC 1984
- Manuscript Revised: 4 DEC 1984
- Manuscript Received: 20 AUG 1984
An experimental study of the kinetics of hydrogenation of butynediol has been reported using Pd-Zn-Ca3 catalyst in a slurry reactor. The effects of catalyst loading, butynediol concentration, H2 partial pressure, butenediol (product concentration, temperature, and agitation speed on the rate of hydrogenation have been studied using a stirred pressure reactor). The initial rate data shwoed that the rate is proportional to the square root of H2 pressure, while increase in butynediol concentration inhibited the reaction. A Langmuir-Hinshelwood-type rate model has been proposed based on these data and the kinetic parameters evaluated. The values of the activation energy E and the heat of adsorption of butynediol (−ΔH) evaluated were 38.30 kJ/mol and –9.87 kJ/mol, respectively.
Batch reactor models were derived based on the rate expression obtained from the initial rate data for variable pressure as well as constant pressure conditions. The prediction of the model were compared with experimental data obtained over a wide range of conditions. The predictions of the model were compared with experimental data obtained over a wide range of conditions. The results agreed well within 5–7% error. Use of the pressure vs. time data for evaluation of kinetic and mass transfer parameters is also demonstrated.