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In this study, the catalytic behavior of protonated clinoptilolite in propane-SCR-NO x  was investigated. The experiments were carried out in the temperature range of 200–500 °C as a function of zeolite mesh size 20, 35 and 70 at different weights of zeolite (0.45–1 g) and flow rates (300–600 ml/min) and consequently at various gas hourly space velocities (GHSV). Group method of data handling (GMDH) and artificial neural network (ANN) system were applied for mathematical modeling of NO x  conversion to N 2  in propane-SCR-NO x . The operating temperature (T), volumetric flow rate (F) and the weight of clinoptilolite zeolite (W) and the conversion of NO x  to N 2  (X) were considered as the inputs and output, respectively. In order to evaluate the models performance, conversions of NO x  obtained from the GMDH and ANN systems were compared with those obtained from the experimental method. It is concluded that the ANN could successively estimate the conversion and the results were in a good agreement with the experimental data.

Experimental Study and Mathematical Modeling of Propane-SCR-NO x Using Group Method of Data Handling and Artificial Neural Network