effectsofniparticlesizeonaminationofmonoethanolamineoverniresio2catalysts
文献类型：期刊论文
| 作者 | Ma Lei2; Yan Li2; Lu Anhui1; Ding Yunjie2 |
| 刊名 | 催化学报
 |
| 出版日期 | 2019-01-01 |
| 卷号 | 40期号:4页码:567 |
| ISSN号 | 0253-9837 |
| 英文摘要 | Ni-Re/SiO_2 catalysts with controllable Ni particle sizes (4.5–18.0 nm) were synthesized to investigate the effects of the particle size on the amination of monoethanolamine (MEA). The catalysts were characterized by various techniques and evaluated for the amination reaction in a trickle bed reactor at 170 °C, 8.0 MPa, and 0.5 h~(-1) liquid hourly space velocity of MEA (LHSVMEA) in NH_3/H_2 atmosphere. The Ni-Re/SiO_2 catalyst with the lowest Ni particle size (4.5 nm) exhibited the highest yield (66.4%) of the desired amines (ethylenediamine (EDA) and piperazine (PIP)). The results of the analysis show that the turnover frequency of MEA increased slightly (from 193 to 253 h~(-1)) as the Ni particle sizes of the Ni-Re/SiO_2 catalysts increased from 4.5 to 18.0 nm. Moreover, the product distribution could be adjusted by varying the Ni particle size. The ratio of primary to secondary amines increased from 1.0 to 2.0 upon increasing the Ni particle size from 4.5 to 18.0 nm. Further analyses reveal that the Ni particle size influenced the electronic properties of surface Ni, which in turn affected the adsorption of MEA and the reaction pathway of MEA amination. Compared to those of small Ni particles, large particles possessed a higher proportion of high-coordinated terrace Ni sites and a higher surface electron density, which favored the amination of MEA and NH_3 to form EDA. |
| 语种 | 英语 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/178636]  |
| 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 |
| 作者单位 | 1.大连理工大学 2.中国科学院大连化学物理研究所 |
| 推荐引用方式 GB/T 7714 | Ma Lei,Yan Li,Lu Anhui,et al. effectsofniparticlesizeonaminationofmonoethanolamineoverniresio2catalysts[J]. 催化学报,2019,40(4):567. |
| APA | Ma Lei,Yan Li,Lu Anhui,&Ding Yunjie.(2019).effectsofniparticlesizeonaminationofmonoethanolamineoverniresio2catalysts.催化学报,40(4),567. |
| MLA | Ma Lei,et al."effectsofniparticlesizeonaminationofmonoethanolamineoverniresio2catalysts".催化学报 40.4(2019):567. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。