ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Fischer–Tropsch reaction over a Co2-Ni-Mn/SiO2 nanocatalyst prepared by thermal decomposition of a new precursor
Zohreh Razmara, Ali Reza Rezvani, and Hamideh Saravani
Department of Chemistry, University of Zabol, Zabol, Iran
Abstract: This study was prepared for the first time the trimetallic nanocatalyst Co2-Ni-Mn/SiO2 by thermal decomposition of) [Ni(H2O)5Co(dipic)2].2H2O + [Mn(H2O)5Co(dipic)2] 2H2O)/SiO2, to study the Fischer–Tropsch reaction for conversion of the synthesis gas to light olefins. The catalytic performance of Co2-Ni-Mn/SiO2 as a nanocatalyst prepared by thermal decomposition of an inorganic precursor was compared to that of the trimetallic nanocatalysts Co2-Ni-Mn/SiO2 as reference nanocatalysts prepared by impregnation and co-precipitation. The characterization of precursor and nanocatalyst were confirmed by thermo gravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET) specific surface area, and X-ray diffraction (XRD). The Fischer–Tropsch reaction for all nanocatalysts of Co2-Ni-Mn/SiO2 was studied at 280–360 °C at a gas hourly space velocity of 3600 h−1, and a H2/CO molar ratio of 1:1 at atmospheric pressure. The results showed that the Co2-Ni-Mn/SiO2 nanocatalyst prepared by thermal decomposition of an inorganic complex exhibited the higher activity than the other nanocatalysts and showed maximum selectivity to light olefins at 360 °C.
Keywords: Trimetallic nanocatalyst; Thermal decomposition; Oxide nanoparticles; Fischer–Tropsch reaction; Impregnation
Full paper is available at www.springerlink.com.
Chemical Papers 71 (4) 849–856 (2017)