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Synthetic ferripyrophyllite: preparation, characterization and catalytic application

MPS-Authors
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Qiao,  Yunxiang
Service Department Theyssen (Technical Labs), Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Research Department Leitner, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Theyssen,  Nils
Service Department Theyssen (Technical Labs), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Spliethoff,  Bernd
Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Folke,  Jan
Research Department Schlögl, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Weidenthaler,  Claudia
Research Group Weidenthaler, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schmidt,  Wolfgang
Research Group Schmidt, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Prieto,  Gonzalo
Research Group Prieto, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
ITQ Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC);

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Ochoa-Hernández,  Cristina
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Bill,  Eckhard
Research Department DeBeer, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Ye,  Shengfa
Research Group Ye, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Research Department Neese, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;
Dalian Institute of Chemical Physics, Chinese Academy of Sciences ;

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Ruland,  Holger
Research Department Schlögl, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Schüth,  Ferdi
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Leitner,  Walter
Research Department Leitner, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;
Institut für Technische und Makromolekulare Chemie, RWTH Aachen University;

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Citation

Qiao, Y., Theyssen, N., Spliethoff, B., Folke, J., Weidenthaler, C., Schmidt, W., et al. (2021). Synthetic ferripyrophyllite: preparation, characterization and catalytic application. Dalton Transactions, 50(3), 850-857. doi:10.1039/D0DT03125A.


Cite as: http://hdl.handle.net/21.11116/0000-0007-F242-D
Abstract
Sheet silicates, also known as phyllosilicates, contain parallel sheets of tetrahedral silicate built up by [Si2O5]2- entities connected through intermediate metal-oxygen octahedral layers. The well-known minerals talc and pyrophyllite are belonging to this group based on magnesium and aluminium, respectively. Surprisingly, the ferric analogue rarely occurs in nature and is found in mixtures and conglomerates with other materials only. While partial incorporation of iron into pyrophyllites has been achieved, no synthetic protocol for purely iron-based pyrophyllite has been published yet. Here we report about the first artificial synthesis of ferripyrophyllite under exceptional mild conditions. A similar ultrathin two-dimensional (2D) nanosheet morphology is obtained as in talc or pyrophyllite but with iron(lll) as a central metal. The high surface material exhibits a remarkably high thermostability. It shows some catalytic activity in ammonia synthesis and can serve as catalyst support material for noble metal nanoparticles.