Original Articles
Subrat Jyoti Borah and Diganta
Abstract
Acid treated modified montmorillonite clay was used as catalyst precursors for the synthesis of benzimidazoles through the room temperature stirring of aromatic aldehyde and o-phenylene- diamine. The modification of the clay was done by treating the clay with HCl to under controlled conditions to produce a porous matrix with high surface area. The modified clay was characterized by powder XRD, N2 adsorption-desorption and SEM-EDX analysis. The recyclability of the catalyst was also investigated and showed efficient catalytic activity for several catalytic run.