Consolidation of Tin Sulfide Chalcogels and Xerogels with and without Adsorbed Iodine

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• 作者：Brian J. Riley ; David A. Pierce ; William C. Lepry ; Jared O. Kroll ; Jaehun Chun ; Kota Surya Subrahmanyam ; Mercouri G. Kanatzidis ; Fares Khamis Alblouwy ; Aneeruddha Bulbule ; Edward M. Sabolsky
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2015
• 出版时间：November 18, 2015
• 年：2015
• 卷：54
• 期：45
• 页码：11259-11267
• 全文大小：555K
• ISSN：1520-5045

文摘

Tin sulfide (Sn₂S₃) chalcogels are one of the most effective nonoxide 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. Adding GeS₂ to iodine-sorbed or iodine-free Sn₂S₃ chalcogels provides better glass formation than Sn鈥揝 or Sn鈥揝鈥揑 alone, and the quantity of iodine measured in the bulk glass of the consolidated iodine-sorbed Sn₂S₃ chalcogel was at 鈭?5 mass%. Additional experiments were conducted using microwave sintering and hot isostatic pressing with iodine-sorbed Sn₂S₃ xerogels to evaluate alternative consolidation techniques.