Studium nosičových katalyzátorů pro současnou oxidaci CO a uhlovodíků určených k čištění spalin z domácích topenišť

Abstract

This diploma thesis investigates the catalytic oxidation of CO, propane, and methane to reduce emissions from domestic heating systems. It compares a commercial noble metal-based monolith with lab-prepared NiCo2O4 and LaSrMnO catalysts. Characterization (ICP-AES, XRD, TPR, TPD) and fixed-bed flow reactor tests ($100–450$ °C) evaluated the effects of active phase composition and loading, catalyst bed-residence time, feed mixture, and water vapor on catalytic activity. Due to its high reducibility and Ni-Co synergy, the NiCo2O4 spinel showed excellent activity in dry mixtures, even outperforming the commercial standard in propane oxidation. Conversely, the LaSrMnO perovskite exhibited lower initial activity but better resistance to water vapor deactivation. Given its stability and low cost, it represents a promising alternative to noble metal catalysts.