6533b835fe1ef96bd12a0128
RESEARCH PRODUCT
NOx selective catalytic reduction at high temperatures with mixed oxides derived from layered double hydroxides
Antonio E. PalomaresGonzalo AbellánAntonio RiberaC. Franchsubject
inorganic chemicalsMaterials scienceHydrogenLayered double hydroxidesInorganic chemistrychemistry.chemical_element02 engineering and technologyNOxengineering.material010402 general chemistry01 natural sciences7. Clean energyOxygenCatalysisMixed oxidesINGENIERIA QUIMICACatalysisCrystallinityFCCChemical compositionNOxLayered double hydroxidesSelective catalytic reductionGeneral Chemistry021001 nanoscience & nanotechnology0104 chemical scienceschemistry13. Climate actionengineering0210 nano-technologydescription
[EN] Mixed oxides derived from layered double hydroxides (LDHs) have been investigated as potential catalysts for the NOx removal at high temperatures. The best results were obtained with Co–Al mixed oxides derived from LDHs that are active at 750 ◦C in the presence of oxygen and water. These catalysts could reduce or/and decompose the NOx formed in the dense phase of the FCC regenerator, being deactivated at oxygen concentrations higher than 1.5%. Nevertheless this deactivation is not permanent and they would be regenerated after reduction with hydrogen at 530 ◦C. The influence of the layered double hydroxides (LDHs) preparation method on the catalyst activity was studied, observing that the activity of the catalyst depends on its chemical composition but it does not depend on the initial LDHs crystallinity, obtaining similar results independently of the synthesis method.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-09-01 |