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Effect of water adsorption on retention of structure and surface area of metal – organic frameworks / Paul M. Schoenecker in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6513-6519 Titre : Effect of water adsorption on retention of structure and surface area of metal – organic frameworks Type de document : texte imprimé Auteurs : Paul M. Schoenecker, Auteur ; Cantwell G. Carson, Auteur ; Himanshu Jasuja, Auteur Année de publication : 2012 Article en page(s) : pp. 6513-6519 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Surface  area  Retention  Adsorption Résumé : This work presents an experimental investigation of water adsorption in metal―organic frameworks (MOFs) at room temperature and up to 90% relative humidity. Structural degradation of the materials after regeneration is analyzed via powder X-ray diffraction (PXRD) and nitrogen adsorption measurements. MOFs with open metal sites are quite hydrophilic but appear to maintain their structure according to PXRD. However, significant surface area loss indicates that decomposition is occurring and is likely an attribute of oxygen presence during the regeneration procedure. Materials with copper paddle-wheel (HKUST-1), 5-coordinated magnesium (Mg MOF-74), and 7-coordinated zirconium (UiO-66(-NH2)) maintain good structural stability, while Zn-COOH containing MOFs (DMOF-1; DMOF-1-NH2; UMCM-1) undergo complete loss of crystallinity. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867302 [article] Effect of water adsorption on retention of structure and surface area of metal – organic frameworks [texte imprimé] / Paul M. Schoenecker, Auteur ; Cantwell G. Carson, Auteur ; Himanshu Jasuja, Auteur . - 2012 . - pp. 6513-6519. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6513-6519 Mots-clés : Surface  area  Retention  Adsorption Résumé : This work presents an experimental investigation of water adsorption in metal―organic frameworks (MOFs) at room temperature and up to 90% relative humidity. Structural degradation of the materials after regeneration is analyzed via powder X-ray diffraction (PXRD) and nitrogen adsorption measurements. MOFs with open metal sites are quite hydrophilic but appear to maintain their structure according to PXRD. However, significant surface area loss indicates that decomposition is occurring and is likely an attribute of oxygen presence during the regeneration procedure. Materials with copper paddle-wheel (HKUST-1), 5-coordinated magnesium (Mg MOF-74), and 7-coordinated zirconium (UiO-66(-NH2)) maintain good structural stability, while Zn-COOH containing MOFs (DMOF-1; DMOF-1-NH2; UMCM-1) undergo complete loss of crystallinity. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867302