| Synergistic effect of binary Co and Ni cations in hydrotalcite-derived Co2-xNixAlO catalysts for promoting soot combustion | |
| Zhang, Yilin; Zhang, Peng; Xiong, Jing; Wei, Yuechang; Jiang, Ning; Li, Yuanfeng; Chi, Hongjie; Zhao, Zhen; Liu, Jian; Jiao, Jinqing | |
| 2022-07-15 | |
| Source Publication | FUEL
 |
| ISSN | 0016-2361 |
| Volume | 320Issue:0Pages:123888 |
| Abstract | Surface coordination unsaturation cation in hydrotalcite-derived CoAl oxides is crucial to improve catalytic performance during soot combustion. Herein, the hydrotalcites-derived Co2-xNixAlO catalysts were prepared by the co-precipitation method. The characteristic nanosheet structure of hydrotalcite-derived CoAl oxides can promote mass transfer efficiency of the reactants. The cobalt elements partially replaced by nickel elements in hydrotalcite-derived CoAl oxides can induce the formation of coordination unsaturated cations and surface anion defects (oxygen vacancies) for increasing surface area and active site. The synergistic effect of binary Co and Ni ions in hydrotalcites-derived Co2-xNixAlO catalysts can boost adsorption-activation properties for O-2 and NO. Hydrotalcites-derived Co2-xNixAlO catalysts exhibit excellent catalytic performances for soot combustion, and their catalytic activity strongly depends on the synergistic effect of binary Co and Ni cations. Among the catalysts, Co1.5Ni0.5AlO catalyst has the highest catalytic activity (T-50 = 333 degrees C, TOF = 1.01 x 10(-2) s(-1)). Based on the characterization results, the catalytic mechanism for soot combustion is proposed: the synergistic effect of binary Co and Ni cations in Co2-xNixAlO catalysts can boost the key step of NO oxidation to NO2. The in-depth understanding on the synergistic effect of Co and Ni cations is meaningful for the development of the ternary hydrotalcite-derived catalysts for soot combustion. |
| Department | 固体废弃物处理与资源化实验室 ; 固体废弃物处理与资源化实验室 |
| Keyword | DIESEL SOOT OXIDE CATALYSTS NOX STORAGE OXIDATION PERFORMANCE NANOPARTICLES REACTIVITY SITES DEHYDROGENATION DECOMPOSITION |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47442 |
| Collection | 固体废弃物处理与资源化实验室 |
| Affiliation | 1.China Univ Petr, State Key Lab Heavy Oil Proc, Coll Sci, Beijing 102249, Peoples R China 2.China Univ Petr, Key Lab Opt Detect Technol Oil & Gas, Beijing 102249, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 4.SINOPEC Res Inst Safety Engn, Qingdao 266071, Shandong, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Yilin,Zhang, Peng,Xiong, Jing,et al. Synergistic effect of binary Co and Ni cations in hydrotalcite-derived Co2-xNixAlO catalysts for promoting soot combustion[J]. FUEL,2022,320(0):123888. |
| APA | Zhang, Yilin.,Zhang, Peng.,Xiong, Jing.,Wei, Yuechang.,Jiang, Ning.,...&Jiao, Jinqing.(2022).Synergistic effect of binary Co and Ni cations in hydrotalcite-derived Co2-xNixAlO catalysts for promoting soot combustion.FUEL,320(0),123888. |
| MLA | Zhang, Yilin,et al."Synergistic effect of binary Co and Ni cations in hydrotalcite-derived Co2-xNixAlO catalysts for promoting soot combustion".FUEL 320.0(2022):123888. |
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