Synergistic effect of carbon molecular sieve and alkali metal nitrate on promoting intermediate-temperature adsorption of CO2 over MgAl-layered double hydroxide
文献类型：期刊论文
| 作者 | Bian, Ke1,2,3; Guo, Haijun2,3,4; Lai, Zhihang2,3,4; Zhou, Lei5; Li, Bangqiang5; Hao, Junjie1,2,3; Zhang, Hairong2,3,4; Peng, Fen2,3; Wang, Mengkun2,3,4; Xiong, Lian2,3,4 |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2025-06-07 |
| 卷号 | 358页码:14 |
| 关键词 | Layered double hydroxide Carbon molecular sieve Alkali metal nitrate Composite CO 2 intermediate-temperature adsorption |
| ISSN号 | 1383-5866 |
| DOI | 10.1016/j.seppur.2024.130263 |
| 通讯作者 | Yu, Sansan(ssyu@syuct.edu.cn) ; Chen, Xinde(cxd_cxd@hotmail.com) |
| 英文摘要 | The development of intermediate-temperature adsorbents with high CO2 adsorption capacity is crucial for the tandem integration with CO2 hydrogenation catalyst, aimed at enhancing economy viability and minimizing energy consumption in Carbon capture, utilization and storage (CCUS). Although certain porous carbon materials (PCM) have been employed to enhance CO2 adsorption capability of layered double hydroxide (LDH), there remains an urgent necessity to identify more cost-effective and efficient PCM alternatives. Herein, alkali metal nitrates ((Li0.3Na0.18K0.52)NO3, hereafter referred to as LiNaK) modified layered double hydroxide (LDH)/carbon molecular sieve (CMS) composite (LiNaK-LDH/CMS) as promising adsorbents for CO2 capture was reported. The effects of CMS addition and nitrate loading, the calcination and adsorption temperature, as well as the cycling stability were investigated systematically. The results revealed that the CO2 capture capacity of the LiNaKmodified layered double oxide (LDO)/CMS composite (30 mol%LiNaK-LDO/CMS15%)-incorporating with 15 wt% CMS addition and 30 mol% nitrate loading-achieved a remarkable CO2 adsorption capacity of 1.32 mmol/g at 300 degrees C due to the synergetic interactions between CMS and nitrate; this represents nearly a sevenfold enhancement compared to initial LDO performance. Moreover, the 30 mol%LiNaK-LDO/CMS15% adsorbent also demonstrated commendable cyclic stability after ten adsorption/desorption cycles, retaining over 85 % of its initial adsorption capacity within half of adsorption time. Based on both obtained adsorption performance and characterization data from the adsorbents, a pre-adsorption enhancing CO2 intermediate-temperature adsorption mechanism over LiNaK-LDH/CMS composite through air calcination processes is proposed. This study significantly advances LDH-based adsorbent for future research into CO2 intermediate-temperature adsorption. |
| WOS关键词 | DOUBLE OXIDES ; AL LDH ; HYDROTALCITE ; SORPTION ; CAPTURE ; ADSORBENTS ; CAPACITY |
| 资助项目 | National Key R &D Program of China[2023YFB4203600] ; Guangdong Basic and Applied Basic Research Foundation[2022A1515012570] ; Foundation of State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology[MJNYSKL202306] ; Joint Fund of the Yulin University ; Dalian National Laboratory for Clean Energy[2023002] ; Key Research and Development Program of Jiangsu Province[BE2023078] ; Project of Jiangsu Province Science and Technology[BE2023324] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001355489400001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key R &D Program of China ; Guangdong Basic and Applied Basic Research Foundation ; Foundation of State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology ; Joint Fund of the Yulin University ; Dalian National Laboratory for Clean Energy ; Key Research and Development Program of Jiangsu Province ; Project of Jiangsu Province Science and Technology |
| 源URL | [http://ir.giec.ac.cn/handle/344007/43519]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Yu, Sansan; Chen, Xinde |
| 作者单位 | 1.Shenyang Univ Chem Technol, Sch Mech & Power Engn, Shenyang 110142, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangdong Prov Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.R&D Ctr Xuyi Attapulgite Energy& Environm Mat, Xuyi 211700, Peoples R China 4.Univ Sci & Technol China, Sch Energy Sci & Engn, Hefei 230026, Peoples R China 5.China Everbright Greentech Ltd, Shenzhen 518000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bian, Ke,Guo, Haijun,Lai, Zhihang,et al. Synergistic effect of carbon molecular sieve and alkali metal nitrate on promoting intermediate-temperature adsorption of CO2 over MgAl-layered double hydroxide[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2025,358:14. |
| APA | Bian, Ke.,Guo, Haijun.,Lai, Zhihang.,Zhou, Lei.,Li, Bangqiang.,...&Chen, Xinde.(2025).Synergistic effect of carbon molecular sieve and alkali metal nitrate on promoting intermediate-temperature adsorption of CO2 over MgAl-layered double hydroxide.SEPARATION AND PURIFICATION TECHNOLOGY,358,14. |
| MLA | Bian, Ke,et al."Synergistic effect of carbon molecular sieve and alkali metal nitrate on promoting intermediate-temperature adsorption of CO2 over MgAl-layered double hydroxide".SEPARATION AND PURIFICATION TECHNOLOGY 358(2025):14. |
入库方式： OAI收割
来源：广州能源研究所
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