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Ionic liquids and eutectic mixtures as solvent and template in synthesis of zeolite analogues

Author

Listed:
  • Emily R. Cooper

    (University of St Andrews)

  • Christopher D. Andrews

    (University of St Andrews)

  • Paul S. Wheatley

    (University of St Andrews)

  • Paul B. Webb

    (University of St Andrews)

  • Philip Wormald

    (University of St Andrews)

  • Russell E. Morris

    (University of St Andrews)

Abstract

The challenges associated with synthesizing porous materials1 mean that new classes of zeolites (zeotypes)—such as aluminosilicate zeolites2,3 and zeolite analogues4—together with new methods of preparing known zeotypes5, continue to be of great importance. Normally these materials are prepared hydrothermally with water as the solvent in a sealed autoclave under autogenous pressure6. The reaction mixture usually includes an organic template or ‘structure-directing agent’ that guides the synthesis pathway towards particular structures. Here we report the preparation of aluminophosphate zeolite analogues by using ionic liquids7 and eutectic mixtures8. An imidazolium-based ionic liquid acts as both solvent and template, leading to four zeotype frameworks under different experimental conditions. The structural characteristics of the materials can be traced back to the solvent chemistry used. Because of the vanishingly low vapour pressure of ionic liquids, synthesis takes place at ambient pressure, eliminating safety concerns associated with high hydrothermal pressures. The ionic liquid can also be recycled for further use. A choline chloride/urea eutectic mixture8 is also used in the preparation of a new zeotype framework.

Suggested Citation

  • Emily R. Cooper & Christopher D. Andrews & Paul S. Wheatley & Paul B. Webb & Philip Wormald & Russell E. Morris, 2004. "Ionic liquids and eutectic mixtures as solvent and template in synthesis of zeolite analogues," Nature, Nature, vol. 430(7003), pages 1012-1016, August.
    • Handle: RePEc:nat:nature:v:430:y:2004:i:7003:d:10.1038_nature02860
    DOI: 10.1038/nature02860
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    Cited by:

    1. Craig, Ben & Schoetz, Theresa & Cruden, Andrew & Ponce de Leon, Carlos, 2020. "Review of current progress in non-aqueous aluminium batteries," Renewable and Sustainable Energy Reviews, Elsevier, vol. 133(C).
    2. Sebastian Ponce & Herman A. Murillo & Frank Alexis & José Alvarez-Barreto & José R. Mora, 2023. "Green Synthesis of Nanoparticles Mediated by Deep Eutectic Solvents and Their Applications in Water Treatment," Sustainability, MDPI, vol. 15(12), pages 1-18, June.

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