Versatile heterogeneous dipicolinate complexes grafted into kaolinite: Catalytic oxidation of hydrocarbons and degradation of dyes.

Highlights: [•] Ni-, Co- and Mn- dipicolinate-kaolinite heterogeneous catalysts were prepared. [•] The catalysts effectively catalyzed cis-cyclooctene oxidation, 55% yield and total selectivity to the epoxide. [•] The catalysts effectively catalyzed cyclohexane oxidation, 22% yield and total selectivity towards cyclohexanone. [•] The catalysts effectively catalyzed the decolorization of metanil yellow, methylene blue and green light solutions (70–100%). [•] Catalysis was always truly heterogeneous, involving high-valent metal-oxo as active catalytic species. The catalysts were easily reused. [Copyright &y& Elsevier]