Superconcentrated Hydrochloric Acid

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• 作者：Kun Huang ; Hui Zhou ; Anqi He ; Yan Sun ; Yufeng Liu ; Xiuxiang Gao ; Ying Zhao ; Shaoxuan Liu ; Zhihong Li ; Tiandou Hu ; Xiaopei Li ; Cuige Liu ; Yongju Wei ; Limin Yang ; Juan Feng ; Yuanli Cai ; Zhanlan Yang ; Yizhuang Xu ; Isao Noda ; Jinguang Wu
• 刊名：Journal of Physical Chemistry B
• 出版年：2011
• 出版时间：June 23, 2011
• 年：2011
• 卷：115
• 期：24
• 页码：7823-7829
• 全文大小：846K
• 年卷期：v.115,no.24(June 23, 2011)
• ISSN：1520-5207

文摘

We report the discovery of a potentially useful superconcentrated HCl at ambient temperature and pressure by using a simple surfactant-based reversed micelle system. Surprisingly, the molar ratios of H⁺ to H₂O (denoted as n_H+/n_H2O) in superconcentrated HCl can be larger than 5, while the maximum achievable n_H+/n_H2O value for conventional saturated HCl aqueous solution (37 wt %) is only about 0.28. Furthermore, both NMR and FT-IR results indicate that a significant amount of HCl remains in the molecular form rather than being ionized into H⁺ and Cl^{鈥?/sup>. The superconcentrated HCl may promote some organic reactions that are not feasible by using conventional 37 wt % HCl solution. For example, addition reaction between C鈺怌 and HCl occurs in superconcentrated HCl solution without using catalysts.}