Selective Adsorption of Volatile Hydrocarbons and Gases in High Surface Area Chalcogels Containing [ES3]3鈥?/sup> Anions (E = As, Sb)

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• 作者：Ejaz Ahmed ; Jayaprakash Khanderi ; Dalaver H. Anjum ; Alexander Rothenberger
• 刊名：Chemistry of Materials
• 出版年：2014
• 出版时间：November 25, 2014
• 年：2014
• 卷：26
• 期：22
• 页码：6454-6460
• 全文大小：484K
• ISSN：1520-5002

文摘

We describe the sol鈥揼el synthesis of the two new chalcogels KFeSbS₃ and NaFeAsS₃, which demonstrate excellent adsorption selectivity for volatile hydrocarbons and gases. These predominantly mesoporous materials have been synthesized by reacting Fe(OAc)₂ with K₃SbS₃ or Na₃AsS₃ in a formamide/water mixture at room temperature. Aerogels obtained after supercritical drying have BET surface areas of 636 m²/g and 505 m²/g for KFeSbS₃ and NaFeAsS₃, respectively, with pore sizes in the micro- (below 2 nm), meso- (2鈥?0 nm), and macro- (above 50 nm) regions.