Knowledge Management System Of Institute of process engineering,CAS
| Isolating Contiguous Ir Atoms and Forming Ir-W Intermetallics with Negatively Charged Ir for Efficient NO Reduction by CO | |
| Ji, Yongjun1; Liu, Shaomian2; Zhu, Hongdan3; Xu, Wenqing2; Jiang, Ruihuan2,4; Zhang, Yu5; Yu, Jian2; Chen, Wenxing6; Jia, Lihua4; Jiang, Jingang7; Zhu, Tingyu2; Zhong, Ziyi8,9; Wang, Dingsheng10; Xu, Guangwen11; Su, Fabing2,11 | |
| 2022-10-31 | |
| Source Publication | ADVANCED MATERIALS
 |
| ISSN | 0935-9648 |
| Pages | 10 |
| Abstract | The lack of efficient catalysts with a wide working temperature window and vital O-2 and SO2 resistance for selective catalytic reduction of NO by CO (CO-SCR) largely hinders its implementation. Here, a novel Ir-based catalyst with only 1 wt% Ir loading is reported for efficient CO-SCR. In this catalyst, contiguous Ir atoms are isolated into single atoms, and Ir-W intermetallic nanoparticles are formed, which are supported on ordered mesoporous SiO2 (KIT-6). Notably, this catalyst enables complete NO conversion to N-2 at 250 degrees C in the presence of 1% O-2 and has a wide temperature window (250-400 degrees C), outperforming the comparison samples with Ir isolated-single-atomic-sites and Ir nanoparticles, respectively. Also, it possesses a high SO2 tolerance. Both experimental results and theoretical calculations reveal that single Ir atoms are negatively charged, dramatically enhancing the NO dissociation, while the Ir-W intermetallic nanoparticles accelerate the reduction of the N2O and NO2 intermediates by CO. |
| Keyword | CO plus NO intermetallic compounds Ir single atoms O (2) resistance SO (2) resistance |
| DOI | 10.1002/adma.202205703 |
| Language | 英语 |
| WOS Keyword | CHEMOSELECTIVE HYDROGENATION ; CATALYSTS ; NANOPARTICLES ; PERFORMANCE ; PD ; ALLOY ; SELECTIVITY ; NANOWIRES ; DESIGN ; SILICA |
| Funding Project | National Natural Science Foundation of China[21978299] ; National Natural Science Foundation of China[52222005] ; National Natural Science Foundation of China[52070180] ; National Natural Science Foundation of China[51938014] ; National Natural Science Foundation of China[21972043] ; Beijing Chenxi Environmental Engineering Co., Ltd.. ; Guangdong Key discipline fund ; Research Foundation for Advanced Talents of Beijing Technology and Business University[19008020159] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| Funding Organization | National Natural Science Foundation of China ; Beijing Chenxi Environmental Engineering Co., Ltd.. ; Guangdong Key discipline fund ; Research Foundation for Advanced Talents of Beijing Technology and Business University |
| WOS ID | WOS:000876315400001 |
| Publisher | WILEY-V C H VERLAG GMBH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/55270 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Ji, Yongjun; Xu, Wenqing; Jiang, Jingang; Su, Fabing |
| Affiliation | 1.Beijing Technol & Business Univ, Sch Light Ind, Beijing 100048, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 3.Nankai Univ, Coll Chem, State Key Lab & Inst Elementoorgan Chem, Tianjin 300071, Peoples R China 4.Qiqihar Univ, Coll Chem & Chem Engn, Qiqihar 161006, Heilongjiang, Peoples R China 5.CNPC Managers Training Inst, Inst Educ & Talent, Beijing 100096, Peoples R China 6.Beijing Inst Technol, Sch Mat Sci & Engn, Energy & Catalysis Ctr, Beijing 100081, Peoples R China 7.East China Normal Univ, Dept Chem, Shanghai 200062, Peoples R China 8.Guangdong Technion Israel Inst Technol GTIIT, Dept Chem Engn, 241 Daxue Rd, Shantou 515063, Peoples R China 9.Technion Israel Inst Technol IIT, IL-32000 Haifa, Israel 10.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China 11.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Peoples R China |
| Recommended Citation GB/T 7714 | Ji, Yongjun,Liu, Shaomian,Zhu, Hongdan,et al. Isolating Contiguous Ir Atoms and Forming Ir-W Intermetallics with Negatively Charged Ir for Efficient NO Reduction by CO[J]. ADVANCED MATERIALS,2022:10. |
| APA | Ji, Yongjun.,Liu, Shaomian.,Zhu, Hongdan.,Xu, Wenqing.,Jiang, Ruihuan.,...&Su, Fabing.(2022).Isolating Contiguous Ir Atoms and Forming Ir-W Intermetallics with Negatively Charged Ir for Efficient NO Reduction by CO.ADVANCED MATERIALS,10. |
| MLA | Ji, Yongjun,et al."Isolating Contiguous Ir Atoms and Forming Ir-W Intermetallics with Negatively Charged Ir for Efficient NO Reduction by CO".ADVANCED MATERIALS (2022):10. |
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