Grafting of hydrophilic ethylene glycols or ethylenediamine on coordinatively unsaturated metal sites in MIL-100(Cr) for improved water adsorption characteristics
| Autor: | Felix Jeremias, Christoph Janiak, Stefan K. Henninger, Martin Wickenheisser |
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| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Thermische Anlagen und Gebäudetechnik
Inorganic chemistry Ethylenediamine Inorganic Chemistry chemistry.chemical_compound Adsorption framework Materials Chemistry Physical and Theoretical Chemistry Triethylene glycol Wärme- und Kältespeicher Energieeffiziente Gebäude und Gebäudetechnik Diethylene glycol glycols Kühlung und Klimatisierung von Gebäuden Grafting grafting Energieeffiziente Gebäude chemistry Energieeffiziente und solare Kühlung adsorption Speichertechnologien Metal-organic framework Elektrische und thermische Wärmepumpen Ethylene glycol ethylenediamine BET theory |
| Popis: | Grafting of activated MIL-100(Cr) with EG (ethylene glycol), DEG (diethylene glycol), TEG (triethylene glycol) and EN (ethylenediamine) leads to a decrease of the BET surface area and pore volume. Yet, water adsorption isotherms of the modified compounds MIL-100(Cr)-EG, MIL-100(Cr)-DEG and MIL-100(Cr)-EN show a favored uptake of water at lower partial pressures and no loss of total water uptake capacity compared to non-modified MIL-100(Cr). The reduction in surface area is offset by an increased hydrophilicity and an advantageous smaller pore size for the adsorption of water. MIL-100(Cr) is therefore very promising as a water sorption material, e.g., for heat-transformation applications. |
| Databáze: | OpenAIRE |
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