Study on the preparation of active support and multi-porous supported catalyst

The preparation of improved catalytic materials based on natural diatomite is reported. Aluminum incorporation by an atomic implantation methods yields supports with enhanced acidity. Nano-zeolite Y supported diatomite composite materials with a multimodao distribution of interconnected micro- meso- and macro pores were obtained by in situ crystallization. Materials were characterized by XRD, TEM, NH 3 -TPD and textural studies using nitrogen adsorption / desorption measurements. The catalytic performance was tested in the cracking of a heavy petroleum residue. The results show, that diatomite due to its large pores is a superior support for the preparation of supported catalysts for the cracking of heavy oil fraction containing bulky molecules. Atomic implantation of aluminum yields catalysts of the same catalytic performance as loading with acidic nano-sized zeolite HY.