30-P-33-In-situ synthesized ZSM-5 on cordierite substrate and NO decomposition on the monolithic catalysts

Abstract

Publisher Summary This chapter presents in situ synthesized ZSM-5 on cordierite substrate and nitric oxide (NO) decomposition on the monolithic catalysts. For obtaining a monolithic catalyst with better mechanical and hydrothermal durability, ZSM-5 zeolite with different silicon/aluminium (Si/Al) ratios has been synthesized in situ on cordierite honeycomb substrate. Scanning electron microscopy (SEM) photos show the different crystal size from sample to sample. Solid magic angle spinning nuclear magnetic resonance (MAS NMR) is used to determine Si/Al ratios and the amount of zeolite on the substrate by the peak intensity 29Si. Investigation of NO decomposition on the copper (Cu)-exchanged ZSM-5/cordierite monolithic catalysts is performed at 723 K, GHSV=I 0,000/h. Results prove that the turnover frequency (TOF) of NO decomposition on monolithic catalysts is comparable with pure zeolite catalysts.