ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Nanosized sulfated zirconia as solid acid catalyst for the synthesis of 2-substituted benzimidazoles
Mohammad Abdollahi-Alibeik and Mohammad Hajihakimi
Department of Chemistry, Yazd University, 89195-741, Yazd, Iran
Abstract: The condensation reaction of o-phenylenediamine and arylaldehydes was investigated in the presence of nanosized sulfated zirconia (SO42−-ZrO2) as the solid acid catalyst. Nanosized SO42−-ZrO2 was prepared and characterized by the XRD, FT-IR, and SEM techniques. The results confirm good stabilization of the tetragonal phase of zirconia in the presence of sulfate. Reusability experiments showed partial deactivation of the catalyst after each run; good reusability can be achieved after calcinations of the recovered catalyst before its reuse.
Keywords: sulfated zirconia – nanoparticle – solid acid – catalyst – benzimidazole – reusability
Full paper is available at www.springerlink.com.
Chemical Papers 67 (5) 490–496 (2013)