Engineering surface Mn-enriched species and regulating active oxygen species over LaMnO₃ catalysts by synergistic modification of acid etching and potassium support for soot removal

Abstract

Herein, a series of highly active catalysts were prepared by acid etching and K species-supported synergistically modified LaMnO3 (LM) catalysts for soot oxidation. As shown in XRD, TEM and XPS...

Promotion of Cobalt Oxide Catalysts by Acid-Etching and Ruthenium Incorporation for Chlorinated VOC Oxidation

“…As well as oxygen vacancies, steps on the support have higher adsorption energy and enhanced the interaction between metal particles and support compared with terraces or smooth surfaces, as revealed by Gong et al In conclusion, the introduction of defects in the support could improve metal–support interactions by enhancing the covalent bonds between the active metal and the support . There are numerous methods available for this purpose, among which acid-etching is a widely employed technique to modulate surface composition and create structural defects on metal oxides. , …”

“…15 There are numerous methods available for this purpose, among which acid-etching is a widely employed technique to modulate surface composition and create structural defects on metal oxides. 20,21 Thus, in this work, Co 3 O 4 and Ru-promoted Co 3 O 4 catalysts were synthesized and examined for the gas phase removal of 1000 ppm of 1,2-dichloroethane (DCE) as a modelchlorinated VOC. The cobalt oxide support was etched with an aqueous HF solution (5 wt %) to generate surface defects for ruthenium oxide stable anchoring.…”