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Diamines as interparticle linkers for silica-titania supported PdCu bimetallic nanoparticles in Chan-Lam and Suzuki cross-coupling reactions

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Published copy (DOI)

Author(s)

  • Babita Jamwal
  • Manpreet Kaur
  • Harsha Sharma
  • Chhavi Khajuria
  • Satya Paul
  • J. H. Clark

Department/unit(s)

Publication details

JournalNEW JOURNAL OF CHEMISTRY
DateAccepted/In press - 22 Feb 2019
DatePublished (current) - 25 Feb 2019
Issue number12
Volume43
Number of pages10
Pages (from-to)4919-4928
Original languageEnglish

Abstract

A series of highly efficient amine functionalized SiO 2 -TiO 2 supported bimetallic PdCu catalysts with varied metal composition have been synthesized. Ethane-1,2-diamine, butane-1,4-diamine and hexane-1,6-diamine were employed as interparticle linkers for amine functionalization of a SiO 2 -TiO 2 support material so as to study the effect of pendant chain length on stabilization and immobilization of bimetallic nanoparticles. The shortest carbon chain length on the support provided the best results, which may be due to the trapping of metal nanoparticles more efficiently by the basic nitrogen sites. The catalytic activities of these materials were evaluated for C-N and C-C coupling reactions. The most active catalyst, Pd 1 Cu 1 @12DA-STS, was characterized by various techniques including SEM, HR-TEM, ICP-AES, XRD, FTIR, EDX, CHN analysis and TGA studies. Moreover, the synthesized catalyst was found to be recyclable for up to five runs without significant loss of activity.

Bibliographical note

© The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2019. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

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