پديدآورندگان :
askari Mahsa Department of chemical engineering, Faculty of chemical engineering, Tarbiat Modares University, Tehran, Iran , Aghaeia Erfan Department of chemical engineering, Faculty of chemical engineering, Tarbiat Modares University, Tehran, Iran , Karimzadeh Ramin ramin@modares.ac.i Department of chemical engineering, Faculty of chemical engineering, Tarbiat Modares University, Tehran, Iran
چكيده فارسي :
In this research, zeolite NaY was synthesized using extracted silica from rice husk ash as silica source and hydrothermal method. The synthesis of this type of zeolite was done by hydrothermal and ultrasound pretreatment prior hydrothermal methods. The properties of the synthesized zeolites were determined using XRD, FESEM analysis and their performance was investigated in the catalytic cracking of heavy hydrocarbon in a fixed bed reactor. The products properties were determined using SIMDIS analysis and also density, viscosity and refractive index of the products were ascertained. The results showed that the synthesized zeolite by ultrasound pretreatment prior hydrothermal method had approximately better catalytic performance because of the effect of these irradiations on the zeolite crystallinity and particles surface grooving. According to XRD results, the crystallinity of the synthesized zeolite by ultrasound pretreatment prior hydrothermal method was 21% greater than prepared sample using conventional hydrothermal method.
