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Ding X, Yan L, Guo C, Jia D, Guo N, Wang L. Synergistic Effects between Lignin, Cellulose and Coal in the Co-Pyrolysis Process of Coal and Cotton Stalk. Molecules 2023; 28:5708. [PMID: 37570678 PMCID: PMC10419761 DOI: 10.3390/molecules28155708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
In this work, Qiqunahu (QQH) coal, cotton stalk, cellulose and lignin extracted from cotton stalk were selected as raw materials to study the effects of the co-pyrolysis of coal and cotton stalk. Online thermogravimetric mass spectrometry (TG-MS) was used to analyse mass loss and gas release characteristics during co-pyrolysis. The results reveal that the mixture of cotton stalk and coal can significantly enhance the reactivity of the blends and promote the formation of effective gas. The cellulose in the cotton stalk promotes the generation of H2 and CO2 during the co-pyrolysis of coal and cotton stalks. Lignin promotes the production of CH4 and CO2. Cellulose and lignin show an inhibitory effect on the precipitation of small molecular weight hydrocarbon gases during co-pyrolysis. This study provides a better understanding for the co-pyrolysis of biomass and coal.
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Affiliation(s)
| | | | | | | | - Nannan Guo
- State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China; (X.D.); (L.Y.); (C.G.); (D.J.)
| | - Luxiang Wang
- State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China; (X.D.); (L.Y.); (C.G.); (D.J.)
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Cai L, Zhang Y, Ma R, Feng X, Yan L, Jia D, Xu M, Ai L, Guo N, Wang L. Nitrogen-Doped Hierarchical Porous Carbon Derived from Coal for High-Performance Supercapacitor. Molecules 2023; 28:molecules28093660. [PMID: 37175070 PMCID: PMC10180139 DOI: 10.3390/molecules28093660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 04/16/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023] Open
Abstract
The surface properties and the hierarchical pore structure of carbon materials are important for their actual application in supercapacitors. It is important to pursue an integrated approach that is both easy and cost-effective but also challenging. Herein, coal-based hierarchical porous carbon with nitrogen doping was prepared by a simple dual template strategy using coal as the carbon precursor. The hierarchical pores were controlled by incorporating different target templates. Thanks to high conductivity, large electrochemically active surface area (483 m2 g-1), hierarchical porousness with appropriate micro-/mesoporous channels, and high surface nitrogen content (5.34%), the resulting porous carbon exhibits a high specific capacitance in a three-electrode system using KOH electrolytes, reaching 302 F g-1 at 1 A g-1 and 230 F g-1 at 50 A g-1 with a retention rate of 76%. At 250 W kg-1, the symmetrical supercapacitor assembled at 6 M KOH shows a high energy density of 8.3 Wh kg-1, and the stability of the cycling is smooth. The energy density of the symmetric supercapacitor assembled under ionic liquids was further increased to 48.3 Wh kg-1 with a power output of 750 W kg-1 when the operating voltage was increased to 3 V. This work expands the application of coal-based carbon materials in capacitive energy storage.
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Affiliation(s)
- Leiming Cai
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Yanzhe Zhang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Rui Ma
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Xia Feng
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Lihua Yan
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Dianzeng Jia
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Mengjiao Xu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Lili Ai
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Nannan Guo
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Luxiang Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
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Li H, Akber Aisa H, Li J. Germacrane-Type Sesquiterpene Lactones from Achillea millefolium L. and Their Anti-Inflammatory Activity. Chem Biodivers 2023; 20:e202300079. [PMID: 36914847 DOI: 10.1002/cbdv.202300079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/13/2023] [Accepted: 03/13/2023] [Indexed: 03/16/2023]
Abstract
Six undescribed germacrane-type sesquiterpene lactones, millefoliumons A-F, and two known analogs were isolated from the ethyl acetate fraction of the whole plant of Achillea millefolium L. growing in Xinjiang, China. The structures of these compounds were fully elucidated by their 1D and 2D nuclear magnetic resonance (NMR), and high resolution mass (HR-ESI-MS) spectral data, and comparison with literatures. The absolute configurations of millefoliumons A-F were confirmed by experimental and calculated electronic circular dichroism data (ECD), and 13 C-NMR calculations and DP4+ probability analysis. All compounds displayed the approximate tendency to inhibit the nitric oxide (NO) release in lipopolysaccharide (LPS)-induced BV2 cells.
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Affiliation(s)
- Hongliang Li
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Haji Akber Aisa
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jun Li
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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