|
1
|
Xie C, Sun Y, Zhu B, Song W, Xu M. Adsorption properties of NH3, NO, and O2 molecules over the FeO (100) and oxygen-defected FeO (100) surfaces: a density functional theory study. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1836413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Chaoyue Xie
- School of Petroleum Engineering, Changzhou University, Changzhou, People’s Republic of China
| | - Yunlan Sun
- School of Petroleum Engineering, Changzhou University, Changzhou, People’s Republic of China
| | - Baozhong Zhu
- School of Petroleum Engineering, Changzhou University, Changzhou, People’s Republic of China
| | - Weiyi Song
- School of Petroleum Engineering, Changzhou University, Changzhou, People’s Republic of China
| | - Minggao Xu
- Center for Advanced Combustion and Energy, University of Science and Technology of China, Hefei, People’s Republic of China
| |
Collapse
|
|
2
|
Hao X, Song X, Li K, Wang C, Li K, Li Y, Sun X, Ning P. Theoretical study on NO x adsorption properties over the α-MnO 2(110) surface. RSC Adv 2020; 10:9539-9548. [PMID: 35497226 PMCID: PMC9050150 DOI: 10.1039/c9ra09455e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/29/2020] [Indexed: 11/22/2022] Open
Abstract
Herein, α-MnO2 was studied as an adsorbent for the removal of NOx (NO, NO2) derived from flue gas. First-principles calculations based on the density functional theory (DFT) were performed to investigate the NOx adsorption properties over the α-MnO2(110) surface. NO strongly adsorbed over the α-MnO2(110) surface via chemisorption spontaneously under 550 K. The NO2 molecules adsorbed over the surface via chemisorption and physisorption when the terminal N- and O atoms approached the surface, respectively. The joint adsorption of NOx was more stable than the isolated adsorption system. Furthermore, the net charge was transferred from the molecule to the surface. The surface and temperature affected the entropy, enthalpy, NO adsorption and NO2 desorption in the temperature range of 300–550 K. The equilibrium constants decreased with an increase in temperature, which reduced the conversion rate. NO adsorbs over the α-MnO2(110) surface initially and then NO2 in the isolated system at low temperature. Joint adsorption is more stable than the isolated system.![]()
Collapse
Affiliation(s)
- Xingguang Hao
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology Kunming 650500 PR China +86-871-65920507 +86-871-65920507
| | - Xin Song
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology Kunming 650500 PR China +86-871-65920507 +86-871-65920507
| | - Kai Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology Kunming 650500 PR China +86-871-65920507 +86-871-65920507
| | - Chi Wang
- Faculty of Chemical Engineering, Kunming University of Science and Technology Kunming 650500 PR China
| | - Kunlin Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology Kunming 650500 PR China +86-871-65920507 +86-871-65920507
| | - Yuan Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology Kunming 650500 PR China +86-871-65920507 +86-871-65920507
| | - Xin Sun
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology Kunming 650500 PR China +86-871-65920507 +86-871-65920507
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology Kunming 650500 PR China +86-871-65920507 +86-871-65920507.,National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming University of Science and Technology Kunming 650500 PR China
| |
Collapse
|
|
3
|
Zhao X, Li K, Ning P, Wang C, Sun X, Ma Y, Song X, Jia L, Hao X. Theoretical study on simultaneous removal of SO 2, NO, and Hg 0 over graphene: competitive adsorption and adsorption type change. J Mol Model 2019; 25:364. [PMID: 31773395 DOI: 10.1007/s00894-019-4254-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 11/12/2019] [Indexed: 11/27/2022]
Abstract
In this work, the influence of competitive adsorption and the change of charge transfer for simultaneous adsorption removal of SO2, NO, and Hg0 over graphene were investigated using density functional theory method. The results showed that all the adsorptive effect of SO2, NO, and Hg0 were caused by physical interaction. The adsorptive energy of SO2 was the highest, and the adsorptive energy of Hg0 was the lowest. SO2 could be preferentially adsorbed and removed. NO/SO2 and Hg0 had the mutual promotion effect for simultaneous adsorption over graphene surface. SO2 and NO had the mutual inhibition effect for simultaneous adsorption over graphene surface. Compared with single molecular adsorption, the adsorption type of bi-molecular adsorption did not change. However, the simultaneous adsorption changed the adsorption type of Hg0 + SO2 + NO to chemical adsorption due to the interaction among Hg0, SO2, and NO. As such, this study provides a theoretical insight for future application and development. Graphical abstractNO/SO2 and Hg0 had the mutual promotion effect for simultaneous adsorption. SO2 and NO had the mutual inhibition effect for simultaneous adsorption.
Collapse
Affiliation(s)
- Xiaomin Zhao
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Kai Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
- National-Regional Engineering Center for Recovery of Waste Gases from, Metallurgical and Chemical Industries, Kunming University of Science and Technology, Kunming, 650500, People's Republic of China
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
- National-Regional Engineering Center for Recovery of Waste Gases from, Metallurgical and Chemical Industries, Kunming University of Science and Technology, Kunming, 650500, People's Republic of China
| | - Chi Wang
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Xin Sun
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Yixing Ma
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Xin Song
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Lijuan Jia
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, China.
| | - Xingguang Hao
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| |
Collapse
|