Tin sulfide (Sn2S3) chalcogels are one of the most effective non-oxide aerogels evaluated to date for iodine gas capture. This is attributed to the fact that the Sn within the gel network has a strong affinity for chemisorption of iodine to form SnI4. This study demonstrates an approach for consolidating the raw and iodine-sorbed Sn2S3 chalcogels into a chalcogenide glass using GeS2 as a glass forming additive. The system with both iodine-sorbed and iodine-free Sn2S3 chalcogels provides better glass-forming characteristics than Sn-S or Sn-S-I alone, and the quantity of iodine measured in the bulk glass of the consolidated iodine-sorbed Sn2S3 chalcogel was at ~45 mass%. Additional experiments were also conducted using microwave sintering and hot isostatic pressing with Sn2S3 xerogels.
Revised: March 17, 2016 |
Published: November 18, 2015
Citation
Riley B.J., D.A. Pierce, W.C. Lepry, J.O. Kroll, J. Chun, K.S. Subrahmanyam, and M.G. Kanatzidis, et al. 2015.Consolidation of tin sulfide chalcogels and xerogels with and without adsorbed iodine.Industrial and Engineering Chemistry Research 54, no. 45:11259-11267.PNNL-SA-111578.doi:10.1021/acs.iecr.5b02697