Improved metal-support interaction in Ru/CeO2 catalyst via plasma-treated strategy for dichloroethane oxidation

被引：11

作者：

Chen, Lin ^{[1
]}

Zhou, Wanwan ^{[1
]}

Huo, Can ^{[1
]}

Li, Lei ^{[2
]}

Cui, Mifen ^{[1
]}

Qiao, Xu ^{[1
]}

Fei, Zhaoyang ^{[1
]}

机构：

[1] Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China

[2] Yancheng Inst Technol, Sch Chem & Chem Engn, Yancheng 224051, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2023年 / 660卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Metal -support interaction; Plasma treatment; Ru; CeO; 2; catalyst; Catalytic combustion; Dichloroethane; VOLATILE ORGANIC-COMPOUNDS; POROUS SILICA MATRIX; TOLUENE ABATEMENT; DISCHARGE PLASMA; DEEP OXIDATION; MIXED OXIDES; COMBUSTION; CERIA; CEO2; 1,2-DICHLOROETHANE;

D O I：

10.1016/j.apcata.2023.119215

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 degrees C, TOFSSA=6.98 & mu;mol & BULL;m- 2 & BULL;h-1 and Ea=26 kJ & BULL;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.

引用

页数：11

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