Topics in Catalysis

, Volume 61, Issue 14, pp 1424–1436 | Cite as

Hierarchical Porosity Tailoring of Sol–Gel Derived Pt/SiO2 Catalysts

  • Andrés Felipe Sierra-Salazar
  • André AyralEmail author
  • Tony Chave
  • Vasile Hulea
  • Sergey I. Nikitenko
  • Siglinda Perathoner
  • Patrick Lacroix-DesmazesEmail author
Original Paper


Hierarchically porous materials offer the opportunity for catalyst development in regards to improving catalytic performances. In the present work, the combination of latex synthesis, sonochemical reduction and two-step catalysed sol–gel process has been demonstrated to be a versatile method for preparing supported catalysts with tailored hierarchical porosity. This method has been used to prepare porous Pt/SiO2 catalysts with mesopore and macropore size ranges as large as 2–15 nm and 90–400 nm, respectively. These hierarchically porous catalysts presented an excellent catalytic performance for the selective hydrogenation of p-chloronitrobenzene (p-CNB) to p-chloroaniline (p-CAN). Selectivity values up to 100% at 80% conversion of p-CNB and initial reaction rates up to 74.0 molCNB/min molPt were obtained, while a commercial catalyst exhibited both a lower selectivity of 90.8% and a lower initial reaction rate of 47.7 molCNB/min molPt.


Pt/SiO2 Hierarchical porosity Porosity tailoring Sol–gel Latex Sonochemistry p-Chloronitrobenzene p-Chloroaniline Selective hydrogenation 



This research was funded by SINCHEM Joint Doctorate Programme-Erasmus Mundus Action (Framework Agreement No. 2013-0037; Specific Grant Agreement No. 2014-0679 for PhD thesis of A. F. Sierra-Salazar). Special acknowledgments to: Didier Cot for the SEM images (Institut Européen des Membranes, France), Véronique Viguier for TEM sample preparation, Franck Godiard (Pôle Chimie Balard, Common Service of Electron Microscopy, France) for TEM images, Abdeslam El-Mansouri for mercury porosimetry and nitrogen adsorption–desorption (Institut Européen des Membranes, France), Radu-Dorin Andrei and Olinda Gimello for training on gas chromatography (Institut Charles Gerhardt, MACS team, France), Pascale Guiffrey for access to the calcination equipment (Institut Charles Gerhardt, AM2N team, France).

Supplementary material

11244_2018_1032_MOESM1_ESM.docx (1.3 mb)
Supplementary material 1 (DOCX 1329 KB)


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Andrés Felipe Sierra-Salazar
    • 1
    • 4
  • André Ayral
    • 2
    Email author
  • Tony Chave
    • 3
  • Vasile Hulea
    • 1
  • Sergey I. Nikitenko
    • 3
  • Siglinda Perathoner
    • 4
  • Patrick Lacroix-Desmazes
    • 1
    Email author
  1. 1.ICGM, Université de Montpellier, CNRS, ENSCM. Ingénierie et Architectures Macromoléculaires (IAM), Matériaux Avancés pour la Catalyse et la Santé (MACS)Montpellier Cedex 5France
  2. 2.IEM, Université de Montpellier, CNRS, ENSCM, CC047Montpellier Cedex 5France
  3. 3.ICSM, Université de Montpellier, CEA, CNRS, ENSCMBagnols sur Cèze CedexFrance
  4. 4.Università di Messina, ERIC aisbl and CASPE/INSTMMessinaItaly

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