Abstract
The feasibility of low temperature direct methane conversion to methanol (DMCM) over ferrioxalate supported on ZSM-5 catalyst (FeOx/ZSM-5) was investigated in this study. FeOx/ZSM-5 was synthesized via functionalization of Fe with oxalate ligand and employed to generate hydroxyl radicals (HO) from hydrogen peroxide (HP) in a Fenton-like process to activate the methane CH bond scission to form methoxyl radical which in turn reacted with water to form methanol. The Fourier transformed infrared (FTIR) spectroscopy result showed the presence of νa(CO) from the oxalate anion (C2O42−) at 1655cm−1 and ν3 asymmetry stretch from CO32− at 1343cm−1. The presence of Fe in the catalyst was elucidated by the energy dispersive X-ray, X-ray diffraction patterns and X-ray photoelectron spectroscopy (XPS). Furthermore, the XPS results showed that Fe2+/Fe3+ ratio in FeOx/ZSM-5 was 4.29. The effect of operating conditions showed that while FeOx/ZSM-5 loading and reaction time followed a simple power function (y=a·xn), the effect of HP dosage followed exponential function (y=a·ex), which signifies that the latter is more significant. The used-FeOx/ZSM-5 characterization result showed that virtually all the Fe2+ have been oxidized to Fe3+ after 15min of reaction time. This novel result is promising for further research towards commercial low temperature DMCM.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
