Bromine Number Determination in Pyrolysis Gasoline

This application note presents a technical report on the determination of bromine number in pyrolysis gasoline (pygas) using near-infrared spectroscopy (NIRS). The document outlines the limitations of traditional wet chemical methods, which require sample cooling and preparation, and contrasts them with the advantages of NIRS, which allows for rapid analysis without the need for chemicals or extensive sample preparation. The report details the experimental setup, including the use of a Metrohm DS2500 Liquid Analyzer and disposable glass vials, and describes the data acquisition and prediction model development process. It provides figures of merit for the prediction model, demonstrating the correlation between NIRS predictions and traditional methods. Additionally, the application note compares the costs and time efficiency of NIRS against conventional methods, indicating significant savings in both areas. The findings suggest that NIRS is a feasible alternative for analyzing bromine number in pygas, with the potential for additional quality parameter determination.