Unidimensional Approximation of the Diffuse Electrical Layer in the Inner Volume of Solid Electrolyte Grains in Absence of Background Ions.,ChemPhysChem

当前位置： X-MOL 学术 › ChemPhysChem › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Unidimensional Approximation of the Diffuse Electrical Layer in the Inner Volume of Solid Electrolyte Grains in Absence of Background Ions.
ChemPhysChem ( IF 2.3 ) Pub Date : 2020-08-17 , DOI: 10.1002/cphc.202000455
Nikolay Tarabanko ₁ , Valery E Tarabanko ₁ , Oxana P Taran _{1,

2}

Affiliation

In this paper we continue working on our theory of electrical double layers resulting exclusively from dissociation of a solid electrolyte, which we previously proposed as a medium for catalytic interaction between solid cellulose and solid acid catalysts of hydrolysis. Two theoretical unidimensional models of the inner grain volume are considered: an infinitely long cylindrical pore, and a gel electrolyte near a grain outer surface. Despite the model simplicity, the predictions for the cylindrical pore case are in semi‐quantitative agreement with literature data on electroosmotic experiments, adequately explaining high proton selectivity of sulfonic membranes, and decline of such selectivity at high background acid concentration. The gel model predicts less concentrated diffuse layer in comparison to electrolytes with impenetrable skeleton (e. g., sulfonated carbons). This suggests limited suitability of gel electrolytes as catalysts if a substrate cannot diffuse into the gel bulk and the reaction is thereby spatially limited to the near‐surface region, for example if a substrate is solid like aforementioned cellulose.

中文翻译：

在没有背景离子的情况下，固体电解质颗粒内部体积中的扩散电层的一维近似。

在本文中，我们继续研究仅由固体电解质解离产生的电双层理论，我们先前曾提出将其作为固体纤维素与水解的固体酸催化剂之间催化相互作用的媒介。考虑了两个内部晶粒体积的理论一维模型：无限长的圆柱孔和靠近晶粒外表面的凝胶电解质。尽管模型简单，但对圆柱孔情况的预测与电渗实验的文献数据在半定量上吻合，充分说明了磺酸膜的高质子选择性以及在高背景酸浓度下此类选择性的下降。凝胶模型预测，与骨架无法渗透的电解质（例如，磺化碳）。这表明，如果底物不能扩散到凝胶体中，并且因此反应在空间上仅限于近表面区域，例如如果底物像上述纤维素一样是固体，则凝胶电解质作为催化剂的适用性有限。

更新日期：2020-08-17

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11