1
|
Zhang L, Zhang H, Zhao Z, Meng T, Ma X, Li X, Liu R, Han X, Zhao X, Hao H, Yan H. Molecular Dynamics Simulation of the Adsorption and Diffusion of C 8 Aromatic Isomers in MIL-47(V). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:2385-2395. [PMID: 38237570 DOI: 10.1021/acs.langmuir.3c03706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
The separation of C8 aromatic isomers (oX: o-xylene, pX: p-xylene, mX: m-xylene, and EB: ethylbenzene) remains an enormous challenge in industrial production due to their similar molecular structures and physical properties. Porous materials with suitable pore structures and selective recognition sites to discriminate the slight structural differences of isomers are imminently needed. In this paper, MIL-47(V) with a three-dimensional (3D) grid structure of 10.5 × 10.5 Å2 and a one-dimensional (1D) diamond channel was selected as the adsorbent. However, the mechanism of the adsorption and separation of C8 aromatic isomers in porous materials still needs to be understood. Given the importance of C8 aromatic isomers' confinement in MIL-47(V) for adsorption and diffusion applications, it is important to understand C8 aromatic isomers' behavior in MIL-47(V). Here, we demonstrated from a simulation perspective that metal-organic frameworks MIL-47(V) with one-dimensional (1D) diamond channels can identify C8 aromatic isomers. Molecular dynamics (MD) simulations have shown that organic ligands with guest response sites of MIL-47(V) can effectively distinguish between C8 aromatic isomers by adaptation to the shape of a specific isomer. MIL-47(V) has high adsorption and an excellent separation sequence between C8 aromatic isomers: oX > pX ≈ mX > EB. Significant differences exist in π-π superposition interactions between C8 aromatic isomers and between C8 aromatic isomers and the skeletons. This phenomenon is mainly caused by the unique pore structure and guest response characteristics of MIL-47(V). This work is identified as a supplementary instruction to experimental research and is expected to provide profound insights into research on developing C8 aromatic isomers' adsorption and separation and theoretical support.
Collapse
Affiliation(s)
- Lu Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| | - Hao Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| | - Zhen Zhao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| | - Tong Meng
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xiaoxue Ma
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xin Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| | - Ronghua Liu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xueke Han
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xin Zhao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| | - Hongguo Hao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| | - Hui Yan
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences Liaocheng University, Liaocheng, Shandong 252059, China
| |
Collapse
|
2
|
Karabassov T, Vasenko AS, Bayazitov VM, Golubov AA, Fedulov IS, Abramova AV. Electrical Discharge in a Cavitating Liquid under an Ultrasound Field. J Phys Chem Lett 2023; 14:10880-10885. [PMID: 38032839 PMCID: PMC10726387 DOI: 10.1021/acs.jpclett.3c02778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/13/2023] [Accepted: 11/22/2023] [Indexed: 12/02/2023]
Abstract
A theoretical model for an electrical discharge in a cavitating liquid is developed and compared with experiments for the optimization of the water treatment device. The calculations based on solution of the Noltingk─Neppiras equation support the hypothesis that the electric field promotes the formation of vapor microchannels inside a liquid gap between the electrodes, where at a low gas pressure Paschen's conditions of rupture and abnormal glow discharge maintenance in those microchannels are fulfilled. Theoretical analysis of the cavitation processes and the discharge formation processes is in qualitative agreement with the experimental data obtained in this work in a water treatment device using a hydrodynamic emitter. The following graphic illustrates the experimental setup: (1) feeding tank, (2) hydrodynamic emitter, (3) zone of cavitation inside the plasma reactor, (4) high-frequency generator of electric impulses, and (5) outlet.
Collapse
Affiliation(s)
| | - A. S. Vasenko
- HSE
University, 101000 Moscow, Russia
- Donostia
International Physics Center (DIPC), 20018 San Sebastián/Donostia, Basque Country, Spain
| | - V. M. Bayazitov
- N.S.
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - A. A. Golubov
- Faculty
of Science and Technology and MESA+ Institute of Nanotechnology, University of Twente, 7500AE Enschede, The Netherlands
| | - I. S. Fedulov
- N.S.
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - A. V. Abramova
- N.S.
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| |
Collapse
|