Direct Cu2+ ion-exchanged into as-synthesized SAPO-34 and its catalytic application in the selective catalytic reduction of NO with NH3
文献类型：期刊论文
| 作者 | Xiang, Xiao1,2; Yang, Miao2; Gao, Beibei1,2; Qiao, Yuyan1,2; Tian, Peng2; Xu, Shutao2; Liu, Zhongmin2 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:15页码:12544-12552 |
| ISSN号 | 2046-2069 |
| DOI | 10.1039/c5ra22868a |
| 文献子类 | Article |
| 英文摘要 | A facile and direct ion-exchange (DIE) method has been developed to prepare Cu-exchanged SAPO-34s, in which as-synthesized SAPO-34 is used as a precursor. This approach is simple and economical as compared with the conventional multistep ion exchange procedure. The ion exchange behavior of the as-synthesized SAPO-34s is found to be template-dependent. For SAPO-34s templated by smaller amines, they show a better Cu exchange ability than the corresponding NH4+-SAPO-34 and the Cu loadings rise with the increasing template size. Coordination between amine and Cu2+ in the as-prepared DIE sample is clearly evidenced. However, oversized amine in the CHA cage may cause a failure of the DIE process due to the steric effect. An obvious surface Cu enrichment is observed for the as-prepared DIE sample, which migrates to the interior of the crystals upon calcination. The Cu-SAPO-34 catalyst prepared by DIE method displays excellent performance in the selective catalytic reduction of NO with NH3 (NH3-SCR). Its better low-temperature activity as compared with that of the conventional one is likely due to the higher isolated Cu2+ amount and surface Cu content. This promising strategy is expected to facilitate the large-scale industrial preparation of NH3-SCR catalyst. |
| WOS关键词 | ELECTRON-SPIN-RESONANCE ; ONE-POT SYNTHESIS ; MOLECULAR-SIEVES ; CU/SAPO-34 CATALYSTS ; HYDROTHERMAL STABILITY ; ADSORBATE INTERACTION ; ECHO MODULATION ; CU(II) LOCATION ; LOW-TEMPERATURE ; NITRIC-OXIDE |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000369545800082 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/171416]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Tian, Peng; Liu, Zhongmin |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiang, Xiao,Yang, Miao,Gao, Beibei,et al. Direct Cu2+ ion-exchanged into as-synthesized SAPO-34 and its catalytic application in the selective catalytic reduction of NO with NH3[J]. RSC ADVANCES,2016,6(15):12544-12552. |
| APA | Xiang, Xiao.,Yang, Miao.,Gao, Beibei.,Qiao, Yuyan.,Tian, Peng.,...&Liu, Zhongmin.(2016).Direct Cu2+ ion-exchanged into as-synthesized SAPO-34 and its catalytic application in the selective catalytic reduction of NO with NH3.RSC ADVANCES,6(15),12544-12552. |
| MLA | Xiang, Xiao,et al."Direct Cu2+ ion-exchanged into as-synthesized SAPO-34 and its catalytic application in the selective catalytic reduction of NO with NH3".RSC ADVANCES 6.15(2016):12544-12552. |
入库方式： OAI收割
来源：大连化学物理研究所
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