A Hybrid Numerical Approach for Multi-Responses Optimization of Process Parameters and Catalyst Compositions in CO2 OCM Process over CaO-MnO/CeO2

Abstract:

A new hybrid numerical approach, using Weighted Sum of Squared Objective Functions (WSSOF) algorithm, was developed for multi-responses optimization of carbon dioxide oxidative coupling of methane (CO₂ OCM). The optimization was aimed to obtain optimal process parameters and catalyst compositions with high catalytic performances. The hybrid numerical approach combined the single-response modeling and optimization using Response Surface Methodology (RSM) and WSSOF technique of multi-responses optimization. The hybrid algorithm resulted in Pareto-optimal solutions and an additional criterion was proposed over the solutions to obtain a final unique optimal solution. The simultaneous maximum responses of C₂selectivity and yield were obtained at the corresponding optimal independent variables. The results of the multi-response optimization could be used to facilitate in recommending the suitable operating conditions and catalyst compositions for the CO₂ OCM process.

1. Istadi and Nor Aishah Saidina Amin (2005). A Hybrid Numerical Approach for Multi-Responses Optimization of Process Parameters and Catalyst Compositions in CO₂ OCM Process over CaO-MnO/CeO₂ Chemical Engineering Journal, 106, 213-227, Elsevier.