Abstract
Efficient SO3H-functionalized metal organic framework, UiO-66-NH-SO3H, has been successfully prepared through a post-synthetic modification strategy of UiO-66-NH2 with Chlorosulfonic acid reagent. The UiO-66-NH2 has been synthesized by an ultrasound-assisted (US) method and compared with the conventional-heating method. The UiO-66-NH-SO3H was characterized by elemental analysis, SEM, PXRD and FT-IR to serve as an efficient heterogeneous catalyst for the benzimidazole formation and reductive amination reaction. Furthermore, the UiO-66-NH-SO3H catalyst exhibits good stability, general applicability and excellent recycling performance.
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