Fabrication of Ir-CoOx@mesoporous SiO2 Nanoreactors for Selective Hydrogenation of Substituted Nitroaromatics
文献类型：期刊论文
| 作者 | Wang, Shujian; Wu, Chunzheng; Yu, Hongbo; Li, Tong; Yan, Xuedong; Yan, Bo; Yin, Hongfeng |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2020 |
| 卷号 | 12期号:8页码:9966-9976 |
| 关键词 | CORE-SHELL NANOCATALYSTS CHEMOSELECTIVE HYDROGENATION SILICA NANOPARTICLES CATALYTIC-ACTIVITY PERFORMANCE IRIDIUM OXIDATION CARBON FE RH |
| DOI | 10.1021/acsami.9b21077 |
| 英文摘要 | Nanosized Ir catalysts suffer from serious side reactions and poor stability during hydrogenation of substituted nitroaromatics to produce aromatic amines. In this work, core-shell nanostructures with sub-4 nm Ir-CoOx hybrid cores and mesoporous SiO2 shells were designed and prepared to overcome these problems. The Ir-CoOx hybrid cores were converted from IrCo alloy nanoparticles (NPs) inside SiO2 through in situ calcination and reduction pretreatments. The SiO2 mesoporous shells in Ir-CoOx@SiO2 nanoreactors prevented the agglomeration/sintering of IrCo NPs, while allowing the free reactants and products (big molecules). The synergy between Ir and CoOx species improved H-2 adsorption, thus affecting the reaction rate as well as the selectivity to aromatic amines. As a result, the obtained Ir-CoOx@SiO2 nanocatalyst showed tremendous improvement in catalytic activity, selectivity, and stability. |
| 学科主题 | Science & Technology - Other Topics ; Materials Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/19949]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Yin, HF (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China. 2.Yu, HB |
| 推荐引用方式 GB/T 7714 | Wang, Shujian,Wu, Chunzheng,Yu, Hongbo,et al. Fabrication of Ir-CoOx@mesoporous SiO2 Nanoreactors for Selective Hydrogenation of Substituted Nitroaromatics[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(8):9966-9976. |
| APA | Wang, Shujian.,Wu, Chunzheng.,Yu, Hongbo.,Li, Tong.,Yan, Xuedong.,...&Yin, Hongfeng.(2020).Fabrication of Ir-CoOx@mesoporous SiO2 Nanoreactors for Selective Hydrogenation of Substituted Nitroaromatics.ACS APPLIED MATERIALS & INTERFACES,12(8),9966-9976. |
| MLA | Wang, Shujian,et al."Fabrication of Ir-CoOx@mesoporous SiO2 Nanoreactors for Selective Hydrogenation of Substituted Nitroaromatics".ACS APPLIED MATERIALS & INTERFACES 12.8(2020):9966-9976. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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