Iodine confinement into metal – organic frameworks (MOFs) / Dorina F. Sava in Industrial & engineering chemistry research, Vol. 51 N° 2 (Janvier 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 2 (Janvier 2012) . - pp.614–620 Titre : Iodine confinement into metal – organic frameworks (MOFs) : Low - temperature sintering glasses to form novel glass composite material (GCM) alternative waste forms Type de document : texte imprimé Auteurs : Dorina F. Sava, Auteur ; Terry J. Garino, Auteur ; Tina M. Nenoff, Auteur Année de publication : 2012 Article en page(s) : pp.614–620 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Radioiodine Metal organic Résumé : The safe handling of reprocessed fuel addresses several scientific goals, especially when considering the capture and long-term storage of volatile radionuclides that are necessary during this process. Despite not being a major component of the off-gas, radioiodine (I2) is particularly challenging, because it is a highly mobile gas and 129I is a long-lived radionuclide (1.57 × 107 years). Therefore, its capture and sequestration is of great interest on a societal level. Herein, we explore novel routes toward the effective capture and storage of iodine. In particular, we report on the novel use of a new class of porous solid-state functional materials (metal–organic frameworks, MOFs), as high-capacity adsorbents of molecular iodine. We further describe the formation of novel glass-composite material (GCM) waste forms from the mixing and sintering of the I2-containing MOFs with Bi–Zn–O low-temperature sintering glasses and silver metal flakes. Our findings indicate that, upon sintering, a uniform monolith is formed, with no evidence of iodine loss; iodine is sequestered during the heating process by the in situ formation of AgI. Detailed materials characterization analysis is presented for the GCMs. This includes powder X-ray diffraction, scanning electron microscopy coupled with energy-dispersive spectroscopy (SEM-EDS), thermal analysis (thermogravimetric analysis (TGA)), and chemical durability tests including aqueous leach studies (product consistency test (PCT)), with X-ray fluorescence (XRF) and inductively coupled plasma–mass spectrometry (ICP-MS) of the PCT leachate. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200248g?mi=snxuk8&af=R&pageSize=20&searchT [...] [article] Iodine confinement into metal – organic frameworks (MOFs) : Low - temperature sintering glasses to form novel glass composite material (GCM) alternative waste forms [texte imprimé] / Dorina F. Sava, Auteur ; Terry J. Garino, Auteur ; Tina M. Nenoff, Auteur . - 2012 . - pp.614–620. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 2 (Janvier 2012) . - pp.614–620 Mots-clés : Radioiodine Metal organic Résumé : The safe handling of reprocessed fuel addresses several scientific goals, especially when considering the capture and long-term storage of volatile radionuclides that are necessary during this process. Despite not being a major component of the off-gas, radioiodine (I2) is particularly challenging, because it is a highly mobile gas and 129I is a long-lived radionuclide (1.57 × 107 years). Therefore, its capture and sequestration is of great interest on a societal level. Herein, we explore novel routes toward the effective capture and storage of iodine. In particular, we report on the novel use of a new class of porous solid-state functional materials (metal–organic frameworks, MOFs), as high-capacity adsorbents of molecular iodine. We further describe the formation of novel glass-composite material (GCM) waste forms from the mixing and sintering of the I2-containing MOFs with Bi–Zn–O low-temperature sintering glasses and silver metal flakes. Our findings indicate that, upon sintering, a uniform monolith is formed, with no evidence of iodine loss; iodine is sequestered during the heating process by the in situ formation of AgI. Detailed materials characterization analysis is presented for the GCMs. This includes powder X-ray diffraction, scanning electron microscopy coupled with energy-dispersive spectroscopy (SEM-EDS), thermal analysis (thermogravimetric analysis (TGA)), and chemical durability tests including aqueous leach studies (product consistency test (PCT)), with X-ray fluorescence (XRF) and inductively coupled plasma–mass spectrometry (ICP-MS) of the PCT leachate. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200248g?mi=snxuk8&af=R&pageSize=20&searchT [...]

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