Nanosized sulfated zirconia as solid acid catalyst for the synthesis of 2-substituted benzimidazoles

✍ Scribed by Abdollahi-Alibeik, Mohammad; Hajihakimi, Mohammad

• Book ID: 120333382
• Publisher: Versita
• Year: 2013
• Tongue: English
• Weight: 255 KB
• Volume: 67
• Category: Article
• ISSN: 0366-6352
• DOI: 10.2478/s11696-013-0311-2

✦ Synopsis

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.