A regenerative core-shell LTA@LDH adsorbent for indoor dehumidification and its improved adsorption performance
文献类型：期刊论文
| 作者 | Zhou, Xin1,2; Li, Weiman1,2; Zhang, Le1,2; Chai, Shaohua1,2; Wang, Xiaoze1,2; Li, Wen1; Ma, Guangxin1,2; Li, Hang3; Liu, Haidi1,2; Li, Shuangde1,2 |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2023-02-15 |
| 卷号 | 306页码:10 |
| ISSN号 | 1383-5866 |
| 关键词 | Water adsorbents Hierarchically porous adsorbents Indoor dehumidification Sorption kinetics Desorption |
| DOI | 10.1016/j.seppur.2022.122715 |
| 英文摘要 | Dehumidification is vital for human health and environmental sustainability. However, traditional moisture adsorbents have the problems like low adsorption capacity, high regeneration energy consumption and negative impacts to environment. As a result, it is demanding to develop environmentally friendly adsorbents with desirable adsorption capacity and convenient regeneration. Herein, a Linde type A zeolite@Mg-Al layered double hydroxides (LTA@LDH) with core-shell structure is synthesized by a facile in-situ co-precipitation method and used for indoor dehumidification. The LTA@LDH with hierarchically porous structure presents advantageous synergism of micro-mesopores, and exhibits a better adsorption and desorption performance than the pure LTA. The whole water uptake capacity of LTA@LDH is 0.339 g.g- 1 in relative humidity 95 % & 30 degrees C, much higher than that of pure LTA (0.248 g.g(-1)). The desorption activated energy of LTA@LDH is 53.92 kJ.mol(-1), nearly half of pure LTA (88.63 kJ.mol(-1)), indicating its superior desorption performance. The adsorption activity of LTA@LDH remains unchanged after fifteen consecutive adsorption-regeneration cycles. Based on various characterizations, a three-stage dehumidification model of LTA@LDH was proposed to reveal its unique sorption behaviors: (1) capillary condensation mainly in LTA's micropores; (2) mono-layer order water absorbed in LDH's mesopores; and (3) multi-layer water absorbed in LDH's mesopores. This work provides a new approach to design and develop zeolite-based adsorbents by introducing LDH and designing unique core-shell structure. |
| WOS关键词 | LAYERED DOUBLE HYDROXIDES ; CONJUGATE MATERIAL ; THERMAL EVOLUTION ; SURFACE-AREA ; EFFICIENT ; REMOVAL ; RAMAN ; GAS |
| 资助项目 | Independent Research of State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Science[MPCS-202A-03] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000907619600004 |
| 资助机构 | Independent Research of State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Science |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/56569]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Weiman; Chen, Yunfa |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Div Bioresources & Hlth Prod Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China 4.Shanghai Res Inst Bldg Sci Grp Co Ltd, Shanghai 201108, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Xin,Li, Weiman,Zhang, Le,et al. A regenerative core-shell LTA@LDH adsorbent for indoor dehumidification and its improved adsorption performance[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2023,306:10. |
| APA | Zhou, Xin.,Li, Weiman.,Zhang, Le.,Chai, Shaohua.,Wang, Xiaoze.,...&Chen, Yunfa.(2023).A regenerative core-shell LTA@LDH adsorbent for indoor dehumidification and its improved adsorption performance.SEPARATION AND PURIFICATION TECHNOLOGY,306,10. |
| MLA | Zhou, Xin,et al."A regenerative core-shell LTA@LDH adsorbent for indoor dehumidification and its improved adsorption performance".SEPARATION AND PURIFICATION TECHNOLOGY 306(2023):10. |
入库方式： OAI收割
来源：过程工程研究所
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