pH of Single and Double Salt SO3H-Functionalized Brønsted Acidic Ionic Liquids,Journal of Chemical & Engineering Data

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pH of Single and Double Salt SO3H-Functionalized Brønsted Acidic Ionic Liquids
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2021-04-21 , DOI: 10.1021/acs.jced.0c01026
Zhenxing Song _{1,

2} , Xianbao Cui _{1,

2} , Tianyang Feng ₁ , Ying Zhang ₁ , Xuemei Zhang ₁ , Jie He ₁ , Jixiao Wang _{1,

2}

Affiliation

Acidic ionic liquids are widely utilized as catalysts in acid-catalyzed reactions. The acidity of SO₃H-functionalized Brønsted acidic ionic liquids (S-BAILs) in aqueous solutions was systematically investigated by their pH values. The pH values of single and double salt S-BAILs in aqueous solutions were measured by a pH meter. The dissociation mechanisms of single and double salt S-BAILs in aqueous solutions were proposed. The methods to predict the pH values of single and double salt S-BAILs were also proposed based on the dissociation mechanisms, and the calculated pH values agreed well with the experimental results. The dissociation mechanism of S-BAILs in aqueous solutions is further explained by the dissociation fraction of ionic liquids, and a method to estimate the dissociation fraction of S-BAILs in dilute aqueous solutions was proposed.

中文翻译：

单盐和双盐SO ₃ H-官能化布朗斯台德酸性离子液体的pH值

酸性离子液体被广泛用作酸催化反应中的催化剂。SO ₃的酸度H官能化的布朗斯台德酸性离子液体（S-BAILs）在水溶液中的pH值得到了系统的研究。用pH计测量水溶液中的单盐和复盐S-BAIL的pH值。提出了单盐和复盐S-BAIL在水溶液中的离解机理。基于解离机理，提出了预测单盐和复盐S-BAILs pH值的方法，计算出的pH值与实验结果吻合良好。通过离子液体的离解率进一步解释了S-BAILs在水溶液中的离解机理，提出了一种估算稀水溶液中S-BAILs离解率的方法。

更新日期：2021-05-13

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