Nanomixing Effects in Glycerol/Dodecanol Pickering Emulsions for Interfacial Catalysis,Langmuir

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Nanomixing Effects in Glycerol/Dodecanol Pickering Emulsions for Interfacial Catalysis
Langmuir ( IF 3.7 ) Pub Date : 2018-11-25 00:00:00 , DOI: 10.1021/acs.langmuir.8b02892
Guolin Zhao ₁ , Yao Li ₁ , Bing Hong ₁ , Xia Han , Shuangliang Zhao , Marc Pera-Titus ₁ , Honglai Liu

Affiliation

Pickering emulsions offer a promising platform for conducting interfacial reactions between immiscible reagents. Despite the significant progress in the engineering of amphiphilic catalysts for such reactions, the mechanism behind their enhanced activity is still poorly understood. Herein, using the glycerol/dodecanol system as a case study, we conducted a combined meso- and microscale study of Pickering emulsions stabilized by amphiphilic silica nanoparticles bearing acid centers by marrying dissipative particle dynamics simulations with emulsification experiments. The optimal surface properties of the silica particles in terms of length and density of alkyl chains were identified, matching the experimental results. The local distribution of glycerol and dodecanol near the acid centers was ascertained, unraveling potential reactivity zones near the catalytic acid centers due to an enhanced nanomixing between glycerol and dodecanol.

中文翻译：

甘油/十二烷醇选择液乳液中的纳米混合作用用于界面催化。

Pickering乳液为进行不混溶试剂之间的界面反应提供了一个有前途的平台。尽管在两亲催化剂的工程化方面取得了重大进展，但对其活性增强的机理仍知之甚少。在本文中，我们以甘油/十二烷醇系统为例，通过将耗散的颗粒动力学模拟与乳化实验相结合，对由带有酸中心的两亲性二氧化硅纳米粒子稳定的Pickering乳液进行了中观和微观的联合研究。确定了二氧化硅颗粒在烷基链的长度和密度方面的最佳表面性能，与实验结果相符。确定了酸中心附近的甘油和十二烷醇的局部分布，

更新日期：2018-11-25

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