Understanding the electromagnetic interaction of metal organic framework reactants in aqueous solution at microwave frequencies
Preparation of metal organic frameworks (MOFs) via microwave heating is becoming increasingly popular due to reduced reaction times and enhanced control of MOF particle size. However, there is little understanding about the detailed interaction of the electric field portion of the wave with reactant...
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Royal Society of Chemistry
2016
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| Online Access: | https://eprints.nottingham.ac.uk/32899/ |
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| author | Laybourn, Andrea Katrib, Juliano Palade, Paula A. Easun, Timothy L. Champness, Neil R. Schröder, Martin Kingman, Samuel W. |
| author_facet | Laybourn, Andrea Katrib, Juliano Palade, Paula A. Easun, Timothy L. Champness, Neil R. Schröder, Martin Kingman, Samuel W. |
| author_sort | Laybourn, Andrea |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Preparation of metal organic frameworks (MOFs) via microwave heating is becoming increasingly popular due to reduced reaction times and enhanced control of MOF particle size. However, there is little understanding about the detailed interaction of the electric field portion of the wave with reactants during the synthesis of MOFs. In order to overcome this lack of fundamental understanding, information about the dielectric properties of the reactants is required. In this work the dielectric constants (ε′) and loss factors (ε′′) of benzene-1,4-dicarboxylic acid (H2BDC; also known as terephthalic acid) and a number of M(III) (M = metal) salts dissolved in deionized water were measured as a function of frequency, temperature and concentration and with varying anions and cations. Dielectric data confirm the aqueous M(III) salts to be strong microwave absorbers, particularly at 915 MHz. M(III) salts with mono-anionic ligands (for example chlorides and nitrates) exhibit higher losses than di-anionic salts (sulfates) demonstrating that the former are heated more effectively in an applied microwave field. Of the M(III) salts containing either singly- or doubly-charged anions, those containing Fe(III) have the highest loss indicating that they will heat more efficiently than other M(III) salts such as Cr(III) and Al(III). Interestingly, H2BDC exhibits little interaction with the electric field at microwave frequencies. |
| first_indexed | 2025-11-14T19:17:24Z |
| format | Article |
| id | nottingham-32899 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:17:24Z |
| publishDate | 2016 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
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| spelling | nottingham-328992020-05-04T17:36:18Z https://eprints.nottingham.ac.uk/32899/ Understanding the electromagnetic interaction of metal organic framework reactants in aqueous solution at microwave frequencies Laybourn, Andrea Katrib, Juliano Palade, Paula A. Easun, Timothy L. Champness, Neil R. Schröder, Martin Kingman, Samuel W. Preparation of metal organic frameworks (MOFs) via microwave heating is becoming increasingly popular due to reduced reaction times and enhanced control of MOF particle size. However, there is little understanding about the detailed interaction of the electric field portion of the wave with reactants during the synthesis of MOFs. In order to overcome this lack of fundamental understanding, information about the dielectric properties of the reactants is required. In this work the dielectric constants (ε′) and loss factors (ε′′) of benzene-1,4-dicarboxylic acid (H2BDC; also known as terephthalic acid) and a number of M(III) (M = metal) salts dissolved in deionized water were measured as a function of frequency, temperature and concentration and with varying anions and cations. Dielectric data confirm the aqueous M(III) salts to be strong microwave absorbers, particularly at 915 MHz. M(III) salts with mono-anionic ligands (for example chlorides and nitrates) exhibit higher losses than di-anionic salts (sulfates) demonstrating that the former are heated more effectively in an applied microwave field. Of the M(III) salts containing either singly- or doubly-charged anions, those containing Fe(III) have the highest loss indicating that they will heat more efficiently than other M(III) salts such as Cr(III) and Al(III). Interestingly, H2BDC exhibits little interaction with the electric field at microwave frequencies. Royal Society of Chemistry 2016-02-21 Article PeerReviewed Laybourn, Andrea, Katrib, Juliano, Palade, Paula A., Easun, Timothy L., Champness, Neil R., Schröder, Martin and Kingman, Samuel W. (2016) Understanding the electromagnetic interaction of metal organic framework reactants in aqueous solution at microwave frequencies. Physical Chemistry Chemical Physics, 18 (7). pp. 5419-5431. ISSN 1463-9084 Microwave; Dielectric loss; Metal salts; Metal organic framework; Synthesis http://dx.doi.org/10.1039/C5CP05426E doi:10.1039/C5CP05426E doi:10.1039/C5CP05426E |
| spellingShingle | Microwave; Dielectric loss; Metal salts; Metal organic framework; Synthesis Laybourn, Andrea Katrib, Juliano Palade, Paula A. Easun, Timothy L. Champness, Neil R. Schröder, Martin Kingman, Samuel W. Understanding the electromagnetic interaction of metal organic framework reactants in aqueous solution at microwave frequencies |
| title | Understanding the electromagnetic interaction of metal organic framework reactants in aqueous solution at microwave frequencies |
| title_full | Understanding the electromagnetic interaction of metal organic framework reactants in aqueous solution at microwave frequencies |
| title_fullStr | Understanding the electromagnetic interaction of metal organic framework reactants in aqueous solution at microwave frequencies |
| title_full_unstemmed | Understanding the electromagnetic interaction of metal organic framework reactants in aqueous solution at microwave frequencies |
| title_short | Understanding the electromagnetic interaction of metal organic framework reactants in aqueous solution at microwave frequencies |
| title_sort | understanding the electromagnetic interaction of metal organic framework reactants in aqueous solution at microwave frequencies |
| topic | Microwave; Dielectric loss; Metal salts; Metal organic framework; Synthesis |
| url | https://eprints.nottingham.ac.uk/32899/ https://eprints.nottingham.ac.uk/32899/ https://eprints.nottingham.ac.uk/32899/ |