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Title: Influence of Hydronium Ions in Zeolites on Sorption

Abstract

In presence of sufficient concentrations of water, stable hydrated hydronium ions are formed in inorganic solid acids such as zeolites. In their presence larger organic molecules can only adsorb in the pore volume not occupied by hydronium ions. In consequence, the available pore volume decreases proportionally to their concentrations. The higher charge density (the increasing ionic strength) induced by increasing hydronium ion concentration in zeolite crystalline induces higher activity coefficients of adsorbed substrates, weakening the interactions between the organic part of the molecules, favoring instead interactions with polar groups. The insight allows linking a collective property such as hydrophilicity and hydrophobicity of zeolites to specific interactions on the molecular level.

Authors:
 [1];  [1];  [1];  [1];  [2]; ORCiD logo [1]; ORCiD logo [2]
  1. Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4 85747 Garching Germany
  2. Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4 85747 Garching Germany; Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999 Richland WA 99352 USA
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1507369
Report Number(s):
PNNL-SA-135460
Journal ID: ISSN 1433-7851
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Angewandte Chemie (International Edition)
Additional Journal Information:
Journal Volume: 58; Journal Issue: 11; Journal ID: ISSN 1433-7851
Publisher:
Wiley
Country of Publication:
United States
Language:
English

Citation Formats

Eckstein, Sebastian, Hintermeier, Peter H., Zhao, Ruixue, Baráth, Eszter, Shi, Hui, Liu, Yue, and Lercher, Johannes A. Influence of Hydronium Ions in Zeolites on Sorption. United States: N. p., 2019. Web. doi:10.1002/anie.201812184.
Eckstein, Sebastian, Hintermeier, Peter H., Zhao, Ruixue, Baráth, Eszter, Shi, Hui, Liu, Yue, & Lercher, Johannes A. Influence of Hydronium Ions in Zeolites on Sorption. United States. https://doi.org/10.1002/anie.201812184
Eckstein, Sebastian, Hintermeier, Peter H., Zhao, Ruixue, Baráth, Eszter, Shi, Hui, Liu, Yue, and Lercher, Johannes A. 2019. "Influence of Hydronium Ions in Zeolites on Sorption". United States. https://doi.org/10.1002/anie.201812184.
@article{osti_1507369,
title = {Influence of Hydronium Ions in Zeolites on Sorption},
author = {Eckstein, Sebastian and Hintermeier, Peter H. and Zhao, Ruixue and Baráth, Eszter and Shi, Hui and Liu, Yue and Lercher, Johannes A.},
abstractNote = {In presence of sufficient concentrations of water, stable hydrated hydronium ions are formed in inorganic solid acids such as zeolites. In their presence larger organic molecules can only adsorb in the pore volume not occupied by hydronium ions. In consequence, the available pore volume decreases proportionally to their concentrations. The higher charge density (the increasing ionic strength) induced by increasing hydronium ion concentration in zeolite crystalline induces higher activity coefficients of adsorbed substrates, weakening the interactions between the organic part of the molecules, favoring instead interactions with polar groups. The insight allows linking a collective property such as hydrophilicity and hydrophobicity of zeolites to specific interactions on the molecular level.},
doi = {10.1002/anie.201812184},
url = {https://www.osti.gov/biblio/1507369}, journal = {Angewandte Chemie (International Edition)},
issn = {1433-7851},
number = 11,
volume = 58,
place = {United States},
year = {Wed Feb 06 00:00:00 EST 2019},
month = {Wed Feb 06 00:00:00 EST 2019}
}

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