Deactivation of Pt/F-KL zeolite-type naphtha reforming catalysts: In-situ IR and on-line mass spectrometry studies of fluorine loss

摘要

This paper presents the employment of a method, which combines in-situ IR spectrometry, on-line mass spectrometry, comparative (moisture-free vs moisture-containing) experiments, and isotope exchange, to reveal the deactivation mechanism of fluorine-promoted Pt/KL zeolite-type naphtha reforming catalysts. Fluorine leaves the catalyst in the forms of COF2 and HF as hydrocarbon feedstock and trace amount of H2O coexist.