Boehmite nanoparticles are aluminum oxide hydroxide (γ-AlOOH) particles, which has large specific surface area (>120 m2g-1) and can be prepared via an inexpensive procedure in water using inexpensive commercial materials such as aqueous solution of Al(NO3)3 and NaOH. Boehmite nanoparticles are a cubic orthorhombic unites of aluminum oxide hydroxide that its structure is double sheets of octahedral of aluminum ions with cubic orthorhombic structure (Figure 1). Boehmite is stable in air atmosphere, high temperature, aqueous solution and it is inert in different chemical conditions, therefore boehmite is an ideal support for heterogenization of homogeneous catalysts. The surface of boehmite nanoparticles are covered with high density of hydroxyl groups, therefore it can be used as ideal support for heterogenization of homogeneous catalysts. But, despite of several studies on morphology, properties and preparation of boehmite, it was rarely employed as catalyst support. In order to reusing of catalysts with respect to green chemistry principles, we are reporting various acidic catalysts, basic catalyst and metallic catalysts on boehmite nanoparticles as efficient and reusable catalysts for organic reactions such as coupling reactions, oxidation reactions, multicomponent reactions, oxidative coupling reaction and also synthesis of organic compounds.
