OP-II-3

PP-II-21A numerical algorithm and software were developed to estimate the parametersand predict the concentrations in the bulk phase and inside the catalyst particles. Themodel was able to predict the experimental data and some of the fits of the model forsome experiments is given in Fig. 1.1.51g1.52.5g11molmol0.50.500 50 100 150time (min)5g1.500 50 100time (min)1mol0.500 50 100time (min)Fig. 1. Fit of the model to the experimental data for methyl formate at 60 °Cand different catalyst loadings.The concentration profile (mol/dm 3 ) of methyl formate inside the catalyst particle at60 °C for different particle sizes (particle diameter in mm) at the beginning of the reactionis shown in Fig. 2. As revealed by the figure, diffusion resistance plays a major role inthe process since most catalyst particles had the diameter range of 0.4 – 0.9 mm.c mol/dm 310.410.310.210.1109.90.150.320.440.50.580.680.790.99.89.71.1References9.60 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1xFig. 2. Concentration profile of methyl formate inside the resin particle[1]. Bell, R.P., Dowding, A.L., Noble, J.A., 1955. J. Am. Soc. 9, 3106-3110.[2]. Metwally, M.S., Abel Razik, A., El Hadi M.F., and El-wardany, M.A., 1993, React. Kinet. Catal.Lett. Vol. 49(1),151-159.[3]. H. Haario, 2007, ModEst 6- A User’s Guide, ProfMath, Helsinki.371