<p>The preparation of porous yet mechanically stable centimetric monoliths remains challenging using traditional methods. Herein, hierarchical SBA-15-based porous monoliths, with three levels of porosity (micro- and mesopores from the pores arrangement of the silica structure, and macropores from the replication of polymer beads), were prepared by simple inverse-opal technique. Though the addition of bentonite and proper thermal treatment, solids with specific surface areas above 300 m<sup>2</sup>/g and resistance toward compression above 50&#xa0;N were obtained, which is coherent with a use as heterogeneous catalyst supports.</p>

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Improving mechanical stability of SBA-15 monoliths prepared from polymeric scaffolds replication using bentonite clay

  • Ridvan Yildiz,
  • Jérémy Dhainaut,
  • Carmen Ciotonea,
  • Jean-Philippe Dacquin,
  • Sébastien Royer,
  • Christian Courtois,
  • Yannick Lorgouilloux

摘要

The preparation of porous yet mechanically stable centimetric monoliths remains challenging using traditional methods. Herein, hierarchical SBA-15-based porous monoliths, with three levels of porosity (micro- and mesopores from the pores arrangement of the silica structure, and macropores from the replication of polymer beads), were prepared by simple inverse-opal technique. Though the addition of bentonite and proper thermal treatment, solids with specific surface areas above 300 m2/g and resistance toward compression above 50 N were obtained, which is coherent with a use as heterogeneous catalyst supports.