|
1
|
Cao J, Han F, Wang L, Huang X, Cao Y, He P, Yang H, Chen J, Li H. Ru/g-C 3N 4 as an efficient catalyst for selective hydrogenation of aromatic diamines to alicyclic diamines. RSC Adv 2020; 10:16515-16525. [PMID: 35498848 PMCID: PMC9052785 DOI: 10.1039/d0ra00836b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 04/15/2020] [Indexed: 12/18/2022] Open
Abstract
A series of Ru/g-C3N4 materials with highly dispersed Ru were firstly prepared by an ultrasonic impregnation method using carbon nitride as a support. The catalysts were characterized by various techniques including BET and elemental analysis, ICP-AES, XPS, XRD, CO2-TPD and TEM. The results demonstrated that Ru/g-C3N4 materials with a mesoporous structure and highly dispersed Ru were successfully prepared. The chemo-selective hydrogenation of p-phenylenediamine (PPDA) to 1,4-cyclohexanediamine (CHDA) over Ru/g-C3N4 as a model reaction was investigated in detail. PPDA conversion of 100% with a CHDA selectivity of more than 86% could be achieved under mild conditions. It can be inferred that the carbon nitride support possessed abundant basic sites and the Ru/g-C3N4-T catalysts provided suitable basicity for the aromatic ring hydrogenation. Compared to the N-free Ru/C catalyst, the involvement of nitrogen species in Ru/g-C3N4 remarkably improved the catalytic performance. In addition, the recyclability of the catalyst demonstrated that the aggregation of Ru nanoparticles was responsible for the decrease of the catalytic activity. Furthermore, this strategy also could be expanded to the selective hydrogenation of other aromatic diamines to alicyclic diamines.
Collapse
Affiliation(s)
- Junya Cao
- China University of Mining & Technology Beijing 100083 P. R. China
| | - Fenggang Han
- China University of Mining & Technology Beijing 100083 P. R. China
- CAS Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Clean Production Technology, Institute of Process Engineering, Chinese Academy of Sciences Beijing 100190 China
| | - Liguo Wang
- CAS Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Clean Production Technology, Institute of Process Engineering, Chinese Academy of Sciences Beijing 100190 China
- Sino-Danish College, University of Chinese Academy of Sciences Beijing 100049 China
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences Beijing 10049 China
- Dalian National Laboratory for Clean Energy Dalian 116023 China
| | - Xiaoyu Huang
- China University of Mining & Technology Beijing 100083 P. R. China
- CAS Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Clean Production Technology, Institute of Process Engineering, Chinese Academy of Sciences Beijing 100190 China
| | - Yan Cao
- CAS Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Clean Production Technology, Institute of Process Engineering, Chinese Academy of Sciences Beijing 100190 China
| | - Peng He
- CAS Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Clean Production Technology, Institute of Process Engineering, Chinese Academy of Sciences Beijing 100190 China
| | - Huanhuan Yang
- CAS Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Clean Production Technology, Institute of Process Engineering, Chinese Academy of Sciences Beijing 100190 China
- Sino-Danish College, University of Chinese Academy of Sciences Beijing 100049 China
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences Beijing 10049 China
| | - Jiaqiang Chen
- CAS Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Clean Production Technology, Institute of Process Engineering, Chinese Academy of Sciences Beijing 100190 China
| | - Huiquan Li
- CAS Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Clean Production Technology, Institute of Process Engineering, Chinese Academy of Sciences Beijing 100190 China
- Sino-Danish College, University of Chinese Academy of Sciences Beijing 100049 China
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences Beijing 10049 China
| |
Collapse
|