A mathematical model for catalytic selective hydrogenation of light polyunsaturated hydrocarbons has been developed. The model, coded on the software MATLAB, has been built to sensitively analyze reactor performances. Case-study focused on textural parameters optimization of alveolar monoliths, having in perspective subsequent use in fixed bed applications. Material balances have been assessed assuming ideal plug-flow behavior for the system. Sensitivity analysis have been undertaken tuning main textural parameters in order to improve selectivity. Finally, the same model has been applied on a common pellets catalyst, comparisons have been made to compare the systems and justify monoliths exploitment. The hydrocarbon cuts investigated in the study (namely C4, C3, C2) are output of separation after cracking process, these light cuts are of primary interest in industry after being selectively hydrogenated to highly pure monounsaturated solutions.