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Mou J, Liu Z, Gong X, Wang J. Exploring the Micropore Functional Mechanism of N 2O Adsorption by the Eucalyptus Bark-based Porous Carbon. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:10393-10404. [PMID: 38666366 DOI: 10.1021/acs.langmuir.4c00701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2024]
Abstract
Nitrous oxide (N2O), recognized as a significant greenhouse gas, has received insufficient research attention in the past. In view of their low energy consumption and cost-effectiveness, the application of porous materials in adsorption is increasingly regarded as a potent strategy to reduce N2O pollution. In this study, a series of microporous porous carbons with a preeminent specific surface area (244.54-2018.08 m2 g-1), which are derived from the fast-growing eucalyptus bark, were synthesized by KOH activation at high temperatures. The obtained materials demonstrated a relatively fine N2O capture capability (0.19-0.68 mmol g-1) at normal temperature and pressure. More importantly, the optimal pore size affecting N2O adsorption (0.8 and 1.0 nm) has been detected, which is a meaningful view that has never been put forward in previous studies. The rationality of the N2O adsorption mechanism was also validated by combining the experimental analysis and Grand Canonical Monte Carlo (GCMC) simulation. The calculated results showed that 0.8 and 1.0 nm of the porous carbon were the preferred pore sizes for N2O adsorption, and the interaction force between N2O and the pore wall decreased with the increase of distance. This study provides a significant theoretical basis for the preparation of biomass porous carbon with excellent N2O adsorption performance and practical adsorption application.
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Affiliation(s)
- Jingxian Mou
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of Environmental Protection (Guangxi University), Nanning 530004, Guangxi, China
| | - Zheng Liu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of Environmental Protection (Guangxi University), Nanning 530004, Guangxi, China
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
| | - Xiyue Gong
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of Environmental Protection (Guangxi University), Nanning 530004, Guangxi, China
| | - Jiaying Wang
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- Education Department of Guangxi Zhuang Autonomous Region, Key Laboratory of Environmental Protection (Guangxi University), Nanning 530004, Guangxi, China
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Su J, Yang J, Zhang M, Gao M, Zhang Y, Gao M, Chen L, Huang Y, Wang Z, Shen B. Improvement Mechanism of Ru Species on Hg0 Oxidation Reactivity over V2O5/TiO2 Catalyst: A Density Functional Theory Study. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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Zhao S, Song K, Zhu J, Ma D, Shi JW. Gd-Mn-Ti composite oxides anchored on waste coal fly ash for the low-temperature catalytic reduction of nitrogen oxide. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Chen J, Huang W, Bao S, Zhang W, Liang T, Zheng S, Yi L, Guo L, Wu X. A review on the characterization of metal active sites over Cu-based and Fe-based zeolites for NH 3-SCR. RSC Adv 2022; 12:27746-27765. [PMID: 36320283 PMCID: PMC9517171 DOI: 10.1039/d2ra05107a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 09/20/2022] [Indexed: 06/07/2024] Open
Abstract
Cu-based and Fe-based zeolites are promising catalysts for NH3-SCR due to their high catalytic activity, wide temperature window and good hydrothermal stability, while the detailed investigation of NH3-SCR mechanism should be based on the accurate determination of active metal sites. This review systematically summarizes the qualitative and quantitative determination of metal active sites in Cu-based or Fe-based zeolites for NH3-SCR reactions based on advanced characterization methods such as UV-vis absorption (UV-vis), temperature-programmed reduction with H2 (H2-TPR), X-ray photoelectron spectroscopy (XPS), X-ray absorption fine structure spectroscopy (XAFS), Infrared spectroscopy (IR), Electron paramagnetic resonance (EPR), Mössbauer spectroscopy and DFT calculations. The application and limitations of different characterization methods are also discussed to provide insights for further study of the NH3-SCR reaction mechanism over metal-based zeolites.
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Affiliation(s)
- Jialing Chen
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China +86 027 68862335
| | - Wei Huang
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China +86 027 68862335
| | - Sizhuo Bao
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China +86 027 68862335
| | - Wenbo Zhang
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China +86 027 68862335
| | - Tingyu Liang
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology Wuhan 430205 China
| | - Shenke Zheng
- Hubei Key Laboratory for Processing and Application of Catalytic Materials, School of Chemistry and Chemical Engineering, Huanggang Normal University Huanggang 438000 China
| | - Lan Yi
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China +86 027 68862335
| | - Li Guo
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China +86 027 68862335
| | - Xiaoqin Wu
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China +86 027 68862335
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