title: Superconcentrated hydrochloric acid.
abstract: 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 H(2)O (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(-). 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═C and HCl occurs in superconcentrated HCl solution without using catalysts.
authors: Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China.
authors: Kun
authors: K
authors: Huang
authors: Hui
authors: H
authors: Zhou
authors: Anqi
authors: A
authors: He
authors: Yan
authors: Y
authors: Sun
authors: Yufeng
authors: Y
authors: Liu
authors: Xiuxiang
authors: X
authors: Gao
authors: Ying
authors: Y
authors: Zhao
authors: Shaoxuan
authors: S
authors: Liu
authors: Zhihong
authors: Z
authors: Li
authors: Tiandou
authors: T
authors: Hu
authors: Xiaopei
authors: X
authors: Li
authors: Cuige
authors: C
authors: Liu
authors: Yongju
authors: Y
authors: Wei
authors: Limin
authors: L
authors: Yang
authors: Juan
authors: J
authors: Feng
authors: Yuanli
authors: Y
authors: Cai
authors: Zhanlan
authors: Z
authors: Yang
authors: Yizhuang
authors: Y
authors: Xu
authors: Isao
authors: I
authors: Noda
authors: Jinguang
authors: J
authors: Wu