Novel carbon based catalysts for the reduction of NO: Influence of support precursors and active phase loading

摘要: Abstract Carbon-supported catalysts in the form of powder, briquettes and monolitos have been prepared. Powder briquette samples obtained using a Spanish low-rank coal as raw material for carbon support through pyrolysis process whereas monoliths were prepared by coating cordierite with blend two polymers. Vanadium was chosen active element impregnated equilibrium adsorption from 1 to 8 wt% on surface as-prepared supports. All tested selective catalytic reduction NO NH 3 reducing agent at low temperature (150 °C), demonstrating considerable efficiency which enhanced mainly oxidation treatments an increase vanadium loading up agglomerates formation. The nature precursor determines porosity development chemistry supports, what results different dispersion fixation phase. An enhancement is achieved increasing microporosity amount oxygen groups pyrolysed polymer blend, mesoporosity just certain should be promoted. excess decreases because pore blockage formation agglomeration makes expose lower reactants.