Ion exchange in the synthetic gismondine, zeolite MAP

Literature Information

Publication Date 2002-05-02
DOI 10.1039/B111490P
Impact Factor 3.676
Authors

Susan Allen, Stuart Carr, Andrew Chapple, Alan Dyer, Brigid Heywood


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Abstract

Ion exchange has been studied in zeolite MAP, a synthetic gismondine used as a commercial detergent builder. The zeolite was fully characterized and shown to be a stable phase throughout the three year period of study. The ions pairs examined were; Na ↔ Li,K,Rb,Cs and Na ↔ ½ Mg,Ca,Sr,Ba. All cation forms prepared were examined by powder X-ray diffraction (PXRD), magic-angle spinning (MAS) NMR and thermal analysis. When cation exchanges were shown to be reversible their isotherms were analysed to produce thermodynamic data. The values were then compared with literature values obtained for similar zeolite exchanges. Structural data (PXRD, MASNMR) showed that cation exchange often caused changes in unit cell symmetry as well as the creation of immiscible phases rich in the end-members when calcium and strontium were the in-going cations.

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DOI: 10.1039/C3GC90025H

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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