TY - JOUR
T1 - Improved metal-support interaction in Ru/CeO2 catalyst via plasma-treated strategy for dichloroethane oxidation
AU - Chen, Lin
AU - Zhou, Wanwan
AU - Huo, Can
AU - Li, Lei
AU - Cui, Mifen
AU - Qiao, Xu
AU - Fei, Zhaoyang
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/6/25
Y1 - 2023/6/25
N2 - Plasma-treatment strategy has become an important technique to modify heterogenous catalyst. Here, the plasma-treated Ru/CeO2 catalysts were synthesized and applied to dichloroethane (DCE) oxidation. Compared with the untreated catalysts (CeO2-T and Ru/CeO2-T), the plasma-treated catalysts (CeO2-P, Ru/CeO2-P and Ru/CeO2-TP) show higher catalytic activity. Amongst, the Ru/CeO2-P catalyst shows the highest activity (T90 =243 °C, TOFSSA=6.98 μmol·m−2·h−1 and Ea=26 kJ·mol−1). Based on various characterizations, it reveals that the plasma-treatment can enrich the concentration of surface oxygen vacancies, promote the formation of acid sites, and strengthen the interaction between Ru and CeO2 support. The interaction benefits the dispersion of Ru species, forming more active sites to enhance the DCE conversion. The more acid sites can improve the HCl selectivity. Moreover, the Ru/CeO2-P catalyst exhibits excellent thermal stability and water-resistance performance. This signification result promotes the development of catalysts by plasma-treated strategy, and its wide application in heterogenous catalysis.
AB - Plasma-treatment strategy has become an important technique to modify heterogenous catalyst. Here, the plasma-treated Ru/CeO2 catalysts were synthesized and applied to dichloroethane (DCE) oxidation. Compared with the untreated catalysts (CeO2-T and Ru/CeO2-T), the plasma-treated catalysts (CeO2-P, Ru/CeO2-P and Ru/CeO2-TP) show higher catalytic activity. Amongst, the Ru/CeO2-P catalyst shows the highest activity (T90 =243 °C, TOFSSA=6.98 μmol·m−2·h−1 and Ea=26 kJ·mol−1). Based on various characterizations, it reveals that the plasma-treatment can enrich the concentration of surface oxygen vacancies, promote the formation of acid sites, and strengthen the interaction between Ru and CeO2 support. The interaction benefits the dispersion of Ru species, forming more active sites to enhance the DCE conversion. The more acid sites can improve the HCl selectivity. Moreover, the Ru/CeO2-P catalyst exhibits excellent thermal stability and water-resistance performance. This signification result promotes the development of catalysts by plasma-treated strategy, and its wide application in heterogenous catalysis.
KW - Catalytic combustion
KW - Dichloroethane
KW - Metal-support interaction
KW - Plasma treatment
KW - Ru/CeO catalyst
UR - http://www.scopus.com/inward/record.url?scp=85152893077&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2023.119215
DO - 10.1016/j.apcata.2023.119215
M3 - 文章
AN - SCOPUS:85152893077
SN - 0926-860X
VL - 660
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
M1 - 119215
ER -