JOURNAL OF CHILEAN CHEMICAL SOCIETY

Vol 61 No 3 (2016): Journal of the Chilean Chemical Society
Original Research Papers

SYNTHESIS OF HIGHLY SELECTIVE NANO-STRUCTURED FUNCTIONALIZED SBA-15 METFORMIN PAL¬LADIUM COMPOSITE CATALYST IN PARTIAL HYDROGENATION OF ALKYNES

Reza Kia Kojoori
Department of chemistry, Faculty of Science, East Tehran Branch, Islamic Azad University
Published September 10, 2016
Keywords
  • Partial hydrogenation,
  • Selective,
  • Mesoporous silica,
  • Nano composite,
  • Alkynes,
  • Alkenes
  • ...More
    Less
How to Cite
Kojoori, R. K. (2016). SYNTHESIS OF HIGHLY SELECTIVE NANO-STRUCTURED FUNCTIONALIZED SBA-15 METFORMIN PAL¬LADIUM COMPOSITE CATALYST IN PARTIAL HYDROGENATION OF ALKYNES. Journal of the Chilean Chemical Society, 61(3). Retrieved from https://jcchems.com/index.php/JCCHEMS/article/view/97

Abstract

In this research, a heterogeneous Nano-Structured functionalized SBA-15 metformin palladium composite catalyst is reported for the selective hydrogenation of alkynes. In the first place, A series of the heterogeneous mesoporous SBA-15 metformin palladium catalyst were prepared and afterwards the condition and the ratio of used materials were optimized to give rise a suitable high performance catalyst. The final nano-structured catalyst was characterized by X-ray powder diffraction, BET surface area, FT-IR spectrophotometer, Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) and served in partial hydrogenation of different alkynes, with high selectivity and high yield. The liquid phase hydrogenation was conducted under mild condition of room temperature and atmospheric pressure. The reactions were monitored every half an hour by gas chromatography and all of them were completed during 4-6 hours. The products were characterized by 1H-NMR, 13C-NMR, FT-IR, and Mass Spectrometry (MS) that strongly confirmed the (Z)-double bond configuration of produced alkenes. This prepared catalyst is competitive with the best palladium catalysts known for the selective liquid phase hydrogenation of alkynes and can be easily recovered and regenerated with keeping high activity and selectivity over multiple cycles with a simple regeneration procedure.

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