Highly efficient adsorption desalination employing protonated-amino-functionalized MOFs
The MOFs (metal organic frameworks) namely MIL-101 (Cr), MIL-125 (Ti) and UiO-66 (Zr) are found suitable for desalination and cooling applications. To improve both cooling and desalination performances, these MOFs were embedded with amino (–NH2) functional groups. For further improvement of water ad...
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2022
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| Online Access: | https://hdl.handle.net/10356/163133 |
| _version_ | 1826112162808987648 |
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| author | Han, Bo Chakraborty, Anutosh |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Han, Bo Chakraborty, Anutosh |
| author_sort | Han, Bo |
| collection | NTU |
| description | The MOFs (metal organic frameworks) namely MIL-101 (Cr), MIL-125 (Ti) and UiO-66 (Zr) are found suitable for desalination and cooling applications. To improve both cooling and desalination performances, these MOFs were embedded with amino (–NH2) functional groups. For further improvement of water adsorption capacity and rates, the amino-functionalized MOFs can be protonated with hydrochloric acid (HCl). This article at first deals with the synthesis and characterization of protonated-amino-functionalized (NH3+Cl−) MIL-101 (Cr), MIL-125 (Ti) and UiO-66 (Zr) MOFs. Secondly, under adsorption and desorption conditions, the H2O loadings on these adsorbents are evaluated from transient to steady states. The experimental results show that the protonation (NH3+Cl−) based MIL-101 (Cr), MIL-125 (Ti) and UiO-66 (Zr) MOFs show the greater water distribution of 0.35, 0.31 and 0.4 kg/kg of MOFs. According to experimental results (heat exchanger performance, adsorption isotherms and kinetics data), the performance criteria such as specific cooling capacity (SCP), daily water production (SDWP) and coefficient of performance (COP) are evaluated for various desorption temperature (60 to 80°C) and cycle time (100 to 1000 s). The simulation results show a remarkable improvement in water production i.e., SDWP > 50 m3 desalinated water/t of adsorbents/day for protonated UiO-66 (Zr) MOFs. Additionally, the SCP improves from 0.006 to 0.72 kW/kg of MOFs. |
| first_indexed | 2024-10-01T03:02:46Z |
| format | Journal Article |
| id | ntu-10356/163133 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:02:46Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1631332022-11-24T08:22:24Z Highly efficient adsorption desalination employing protonated-amino-functionalized MOFs Han, Bo Chakraborty, Anutosh School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Functional MOFs Protonation The MOFs (metal organic frameworks) namely MIL-101 (Cr), MIL-125 (Ti) and UiO-66 (Zr) are found suitable for desalination and cooling applications. To improve both cooling and desalination performances, these MOFs were embedded with amino (–NH2) functional groups. For further improvement of water adsorption capacity and rates, the amino-functionalized MOFs can be protonated with hydrochloric acid (HCl). This article at first deals with the synthesis and characterization of protonated-amino-functionalized (NH3+Cl−) MIL-101 (Cr), MIL-125 (Ti) and UiO-66 (Zr) MOFs. Secondly, under adsorption and desorption conditions, the H2O loadings on these adsorbents are evaluated from transient to steady states. The experimental results show that the protonation (NH3+Cl−) based MIL-101 (Cr), MIL-125 (Ti) and UiO-66 (Zr) MOFs show the greater water distribution of 0.35, 0.31 and 0.4 kg/kg of MOFs. According to experimental results (heat exchanger performance, adsorption isotherms and kinetics data), the performance criteria such as specific cooling capacity (SCP), daily water production (SDWP) and coefficient of performance (COP) are evaluated for various desorption temperature (60 to 80°C) and cycle time (100 to 1000 s). The simulation results show a remarkable improvement in water production i.e., SDWP > 50 m3 desalinated water/t of adsorbents/day for protonated UiO-66 (Zr) MOFs. Additionally, the SCP improves from 0.006 to 0.72 kW/kg of MOFs. Ministry of Education (MOE) The authors acknowledge the financing support from Ministry of Education, Singapore (grant reference no. RG53/21). 2022-11-24T08:22:24Z 2022-11-24T08:22:24Z 2022 Journal Article Han, B. & Chakraborty, A. (2022). Highly efficient adsorption desalination employing protonated-amino-functionalized MOFs. Desalination, 541, 116045-. https://dx.doi.org/10.1016/j.desal.2022.116045 0011-9164 https://hdl.handle.net/10356/163133 10.1016/j.desal.2022.116045 2-s2.0-85136084869 541 116045 en RG53/21 Desalination © 2022 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Functional MOFs Protonation Han, Bo Chakraborty, Anutosh Highly efficient adsorption desalination employing protonated-amino-functionalized MOFs |
| title | Highly efficient adsorption desalination employing protonated-amino-functionalized MOFs |
| title_full | Highly efficient adsorption desalination employing protonated-amino-functionalized MOFs |
| title_fullStr | Highly efficient adsorption desalination employing protonated-amino-functionalized MOFs |
| title_full_unstemmed | Highly efficient adsorption desalination employing protonated-amino-functionalized MOFs |
| title_short | Highly efficient adsorption desalination employing protonated-amino-functionalized MOFs |
| title_sort | highly efficient adsorption desalination employing protonated amino functionalized mofs |
| topic | Engineering::Mechanical engineering Functional MOFs Protonation |
| url | https://hdl.handle.net/10356/163133 |
| work_keys_str_mv | AT hanbo highlyefficientadsorptiondesalinationemployingprotonatedaminofunctionalizedmofs AT chakrabortyanutosh highlyefficientadsorptiondesalinationemployingprotonatedaminofunctionalizedmofs |