title: Synthesis of mesoporous zeolite Ni-MFI with high nickel contents by using the ionic complex [(C4H9)4N]2(+)[Ni(EDTA)]2- as a template.
abstract: Ni-MFI zeolites with high percentage of Ni (5-15 wt%) were prepared by using an ionic complex [(C(4)H(9))(4)N](2)(+)[Ni(EDTA)](2-) by one step synthesis. These molecular sieves were characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Fourier-transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-vis), differential scanning calorimeter (DSC) and nitrogen adsorption-desorption isotherms. The results showed that heteroatom Ni was successfully introduced into the MFI framework up to 15 wt%. Moreover, this Ni-MFI possessed regular and stable structure with high specific surface area and average pore diameter of 388-439 m(2) g(-1) and 2.566-3.828 nm, respectively, compared to MFI prepared by traditional methods. These samples also showed good thermal and hydrothermal stability.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, No. 15, Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Li
authors.forename: Baoshan
authors.initials: B
authors.lastname: Li
authors.forename: Huihui
authors.initials: H
authors.lastname: Mao
authors.forename: Asma Tufail
authors.initials: AT
authors.lastname: Shah