eprintid: 6781 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/67/81 datestamp: 2023-11-09 16:18:34 lastmod: 2023-11-09 16:18:34 status_changed: 2023-11-09 16:07:38 type: article metadata_visibility: show creators_name: Ayodele, O.B. title: Structure and reactivity of ZSM-5 supported oxalate ligand functionalized nano-Fe catalyst for low temperature direct methane conversion to methanol ispublished: pub keywords: Catalyst supports; Catalysts; Exponential functions; Fourier transform infrared spectroscopy; Hydrogen peroxide; Ligands; Methane; Methanol; Oxalic acid; Oxidation; Peroxides; Temperature; X ray diffraction, Energy dispersive x-ray; Fenton process; Fenton-like process; Ferrioxalate; Functionalizations; Methane conversions; Methoxyl radical; Operating condition, X ray photoelectron spectroscopy note: cited By 25 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 Formula presented 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(Formula presented) from the oxalate anion (C2O42�) at 1655 cm�1 and ν3 asymmetry stretch from CO32� at 1343 cm�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 15 min of reaction time. This novel result is promising for further research towards commercial low temperature DMCM. © 2016 Elsevier Ltd date: 2016 publisher: Elsevier Ltd official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84983373731&doi=10.1016%2fj.enconman.2016.08.016&partnerID=40&md5=6565af6e89f58aabd947c1723d2c5080 id_number: 10.1016/j.enconman.2016.08.016 full_text_status: none publication: Energy Conversion and Management volume: 126 pagerange: 537-547 refereed: TRUE issn: 01968904 citation: Ayodele, O.B. (2016) Structure and reactivity of ZSM-5 supported oxalate ligand functionalized nano-Fe catalyst for low temperature direct methane conversion to methanol. Energy Conversion and Management, 126. pp. 537-547. ISSN 01968904