文献类型：期刊文献

英文题名：Thermally Reconstructed Ru/La-Co3O4 Nanosheets with Super Thermal Stability for Catalytic Combustion of Light Hydrocarbons: Induced Surface LaRuO3 Active Phase

作者：Gao, Biao[1];Deng, Wei[2];Xia, Hangqi[3];Shan, Kai[4];Wang, Li[1];Qiao, Boyuan[3];Niu, Qiang[3];Wang, Aiyong[1];Guo, Yun[1];Zhan, Wangcheng[1];Guo, Yanglong[1];Dai, Qiguang[1]

机构：[1]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, State Key Lab Green Chem Engn & Ind Catalysis, Shanghai 200237, Peoples R China;[2]Jianghan Univ, Sch Optoelect Mat & Technol, Wuhan 430056, Peoples R China;[3]Elect Power & Met Grp Co Ltd, Ordos 016064, Inner Mongolia, Peoples R China;[4]Zhejiang Wild Wind Pharmaceut Co Ltd, Dongyang 322105, Zhejiang, Peoples R China

年份：2025

卷号：12

期号：18

外文期刊名：ADVANCED SCIENCE

收录：;EI(收录号：20251218084323);WOS:【SCI-EXPANDED(收录号:WOS:001445073100001)】；

基金：This work was supported by the National Key Research and Development Program of China (2022YFB3504200) and the National Natural Science Foundation of China (22276055 and 21922602). The authors thank the Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：catalytic combustion; cobalt oxide; LaRuO3 perovskite; light hydrocarbons; thermal stability

摘要：Addressing the thermal deactivation of catalysts remains critical for light hydrocarbons (LHs) combustion. This study develops Ru/La-Co3O4 nanosheets combining RuOx and La-doped Co3O4, demonstrating exceptional high-temperature stability. The individual introduction of Ru or La significantly promoted the catalytic activity of Co3O4, but a severe thermal deactivation is still inevitable. Remarkably, the co-decoration of Ru and La brought a prominent resistance to high-temperature, the aged Ru/La-Co3O4 at 750 degrees C for 4 h presented a better activity than the fresh catalyst and the TC3-90 instead decreased by 11 degrees C, even only increased by 1 degrees C after aging 100 h and 15 degrees C for 200 h. Systematic studies revealed that the co-presence of La and Ru enhanced the resistance to sintering of Co3O4 and promoted the migration of the lattice oxygen, moreover, the high-temperature induced the formation of LaRuO3 perovskite through the reaction of RuOx with the exsolved La from Co3O4. LaRuO3 phase with excellent redox ability and thermal stability presented a superior activity for catalytic combustion of LHs and suppressed the leaching of Ru species in an oxidizing atmosphere at high temperature. This work contributed to the design of catalysts especially Ru based catalysts for the stable elimination of LHs emissions under high temperature conditions.