Journal
NEW JOURNAL OF CHEMISTRY
Volume 44, Issue 22, Pages 9365-9376Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0nj00488j
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Funding
- DST-SERB [EMR/2014/000090]
- DST-FIST [SR/FST/CSI-217/2010]
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The application of magnetic nanoparticles as an adsorbent and a catalyst support in solving the environmental issues has recently received great attention due to their unique physical and chemical properties, such as high surface area, ease of anchoring the functional groups, lower processing cost, high stability and ease of separation under an external magnetic field. In the present study, a magnetic catalyst was prepared by embedding magnetite (Fe3O4) within the silica shell on which sulfate ions were anchored (Fe3O4@SiO2@SO42-). The catalyst was successfully employed for glycerol esterification with acetic acid to obtain 100% selectivity towards triacetin within 45 min of reaction duration at 80 degrees C. The catalyst was successfully isolated from the reaction medium magnetically and reused for six consecutive reaction cycles while retaining 90% glycerol conversion levels and 50% triacetin selectivity in the reaction cycles.
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