Experimental procedure for kinetic studies on egg-shell catalystsThe case of liquid-phase hydrogenation of 1,3-butadiene and n-butenes on commercial Pd catalysts
- Ardiaca, Nestor O.
- Bressa, Sergio Patricio
- Alves, Javier Alberto
- Martinez, Osvaldo Miguel
- Barreto, Guillermo Fernando
DOIAbstract
A study of the liquid-phase hydrogenation of 1,3-butadiene on commercial Pd/Al2O3 catalysts of the “egg-shell” type has been performed. Experimental conditions (40◦C, 4 atm and high conversion of the di-olefin) were selected in accordance to industrial operating conditions employed for selective hydrogenation of 1,3-butadiene. Three experimental schemes were tested: a slurry reactor, a rotating-basket reactor, and a recirculation system with an external fixed-bed reactor. Significant drawbacks shown by the two former devices were mainly derived from the very high activity and the egg-shell structure of the catalysts. Instead, the recirculation system was found to be an excellent alternative. Although Pd is present only within a very thin ex...
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