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Pure and Applied Chemistry

The Scientific Journal of IUPAC

Ed. by Burrows, Hugh / Stohner, Jürgen

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Volume 90, Issue 1


Separation technology meets green chemistry: development of magnetically recoverable catalyst supports containing silica, ceria, and titania

Lucas L. R. Vono
  • Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, 05508-000 São Paulo, Brazil
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/ Camila C. Damasceno
  • Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, 05508-000 São Paulo, Brazil
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/ Jivaldo R. Matos
  • Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, 05508-000 São Paulo, Brazil
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/ Renato F. Jardim / Richard Landers / Sueli H. Masunaga / Liane M. Rossi
  • Corresponding author
  • Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, 05508-000 São Paulo, Brazil
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Published Online: 2017-09-11 | DOI: https://doi.org/10.1515/pac-2017-0504


Magnetic separation can be considered a green technology because it is fast, efficient, consumes low energy, and minimizes the use of solvents and the generation of waste. It has been successfully used in laboratory scale to facilitate supported catalysts’ handling, separation, recovery, and recycling. Only few materials are intrisically magnetic, hence the application of magnetic materials as catalyst supports has broaden the use of magnetic separation. Iron oxides, silica-coated iron oxides, and carbon-coated-cobalt are among the most studied catalyst supports; however, other metal oxide coatings, such as ceria and titania, are also very interesting for application in catalysis. Here we report the preparation of magnetically recoverable magnetic supports containing silica, ceria, and titania. We found that the silica shell protects the iron oxide core and allows the crystalization of ceria and titania at high temperature without compromising the magnetic properties of the catalyst supports.

Keywords: catalyst support; ceria; ICGC-6; magnetic separation; magnetite; titania

Article note:

A collection of invited papers based on presentations at the 6th International IUPAC Conference on Green Chemistry (ICGC-6), Venice (Italy), 4–8 September 2016.


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About the article

Published Online: 2017-09-11

Published in Print: 2018-01-26

Citation Information: Pure and Applied Chemistry, Volume 90, Issue 1, Pages 133–141, ISSN (Online) 1365-3075, ISSN (Print) 0033-4545, DOI: https://doi.org/10.1515/pac-2017-0504.

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