Sonochemical synthesis of a new nano-sized barium coordination polymer and its application as a heterogeneous catalyst towards sono-synthesis of biodiesel

Faezeh Moghzi; Janet Soleimannejad

doi:10.1016/j.ultsonch.2017.11.023

Sonochemical synthesis of a new nano-sized barium coordination polymer and its application as a heterogeneous catalyst towards sono-synthesis of biodiesel

Ultrason Sonochem. 2018 Apr:42:193-200. doi: 10.1016/j.ultsonch.2017.11.023. Epub 2017 Nov 16.

Authors

Faezeh Moghzi¹, Janet Soleimannejad²

Affiliations

¹ School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran.
² School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran. Electronic address: janet_soleimannejad@khayam.ut.ac.ir.

PMID: 29429661
DOI: 10.1016/j.ultsonch.2017.11.023

Abstract

A new nano-sized barium coordination polymer, {(bipyH)[Ba₂(pydc)₂(Hpydc)(H₂O)₂]}_n·nH₂O (1), (bipy = 4,4'-bipyridine and H₂pydc = pyridine-2,6-dicarboxylic acid), has been sonochemically synthesized and fully characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), FT-IR spectroscopy, thermogravimetric analysis (TGA) and elemental analyses. Compound 1 was structurally characterized by single crystal X-ray diffraction and it was shown that this compound consists of 1D anionic coordination polymers and bipyH⁺ cationic species that construct a three-dimensional supramolecular architecture via non-covalent interactions i.e. ion-pairing and hydrogen bonding. The role of compound 1 as a heterogeneous catalyst in the production of biodiesel was also investigated. A full conversion of soybean oil to biodiesel was accomplished in an exceptionally short timeframe through an ultrasonic-assisted transesterification process in the presence of compound 1.

Keywords: Barium coordination polymer; Biodiesel; Catalyst; Nano; Sonochemical process.