Lignosulfonate, A Promising Biomass-Based Building Block in the Preparation of Recyclable Nanocomposite and Its Application in Condensation Reactions. (7th February 2023)

• Record Type: Journal Article
• Authors: Khansari, Nafiseh; Ghafuri, Hossein; Esmaili Zand, Hamid Reza; Maleki, Ali; Moradi, Hamidreza
• Is Part Of: Polycyclic aromatic compounds. Volume 43:Number 2(2023)
• Page Start: 1434
• Page End: 1450
• Publication Date: 2023-02-07
• Subjects: Biopolymer -- catalyst -- heterogeneous -- lignosulfonate; Polycyclic aromatic compounds -- Periodicals; 547
• DOI: 10.1080/10406638.2022.2028867
• Languages: English
• ISSNs: 1040-6638

Abstract

Abstract: Lignosulfonate is an efficient biomass-based building block, formed an efficient Fe3 O4 @LS nanocomposite with enormous applications. Concerning environmental and economic aspects, our research focused on the application of Fe3 O4 @LS nanocomposite as the metal-free catalyst in the synthesis of 4H-pyrans and 4-phenyl-pyridines. The structure and morphology of Fe3 O4 @LS nanocomposite were completely characterized by Fourier transforms infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDX) field emission scanning electron microscopy (FE-SEM), vibration-sample magnetometer (VSM), X-ray diffraction (XRD) thermal gravimetric analysis (TGA) and back titration method. Also, the structure of synthesized 4H-pyrans and 4-phenyl-pyridines were characterized by FTIR, nuclear magnetic resonance (NMR), and their melting points. This procedure has significant advantages included into high yields, short reaction time and easy operation.