%0 Journal Article %T Catalytic Behavior of Co/Al2O3 Nanocatalyst under External Magnetic Field %J Physical Chemistry Research %I Iranian Chemical Society %Z 2322-5521 %A Nikparsa, Paria %A Nikparsa, Amirhosein %A Mirzaei, Ali %D 2020 %\ 12/01/2020 %V 8 %N 4 %P 645-656 %! Catalytic Behavior of Co/Al2O3 Nanocatalyst under External Magnetic Field %K Magnetic field effect %K Fixed-bed Reactor %K CO hydrogenation %K activation energy %R 10.22036/pcr.2020.226018.1753 %X Magnetic behavior of Co/Al2O3 catalyst in Fischer-Tropsch (FT) synthesis is performed using a magnetically fixed bed reactor. X-ray diffraction (XRD) spectroscopy, scanning electron microscope (SEM) method, Brunauer-Emmett-Teller (BET) method, and vibrating sample magnetometer (VSM) method are used to analyze the catalyst. Magnetic field of 0.015 T is suggested for CO hydrogenation on Co/Al2O3 catalyst with fixed bed reactor. Significant effects of magnetic fields are observed in the FT reaction of CO hydrogenation over Co/Al2O3 catalyst. The CO conversion value increases from 78% to 86% at 250 oC with external magnetic field. The apparent activation energy of FT reaction (102.33kJ/mol without external magnetic field) is reduced (96.45 kJ/mol with applying external magnetic field), and the catalytic activity of Co/Al2O3 catalyst is improved by applying the external magnetic fields during FT process at low temperatures (200-250 oC). The results indicated that the external magnetic fields improved both the rate of reaction and catalytic selectivity to desired hydrocarbons on Co/Al2O3 catalyst. %U https://www.physchemres.org/article_110915_49c90260a0333f4c569acbbbf74e35c4.pdf