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    • Synthesis and characterization of TiO2 –SiO2 nanoparticles as catalyst for dehydrogenation of 1,4-dihydropyridines

      F Farzaneh L Jafarie Fourozune

      Volume 37 Issue 1 February 2014 pp 1-8

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/037/01/0001-0008

    • Keywords

       

      Nanoparticles; nanorods; TiO2–SiO2 mixed oxides; dehydrogenation; 1,4-dihydropyridines.

    • Abstract

       

      Nanoparticles of binary TiO2–SiO2 mixed oxides was prepared via sol–gel method using tetraethylorthosilicate (TEOS) and titanium isopropoxide (TIPP) in different reaction conditions (solvent and pH) using ammonium hyhdroxide, acetic acid, sodium hydroxide, ethyleneglycol and polyethylene glycol followed by calcination at 850–970° C. The morphologies, structures and chemical compositions were determined by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and Fourier transmission infrared spectroscopy (FTIR) techniques. The catalytic activity of the obtained nanomaterials was explored for the dehydrogenation of 1,4-dihydropyridines (1,4-DHPs). Observation of 86–100% conversion and 100% selectivity towards the formation of desired products with prepared nanoparticles will be discussed here.

    • Author Affiliations

       

      F Farzaneh1 L Jafarie Fourozune1

      1. Department of Chemistry, University of Alzahra, P.O. Box 1993891176, Vanak, Tehran, Iran

    • Dates

       
      Published
      February 2014
      Manuscript received
      25 August 2012
      Manuscript revised
      2 November 2012

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