Continuous Methanol Production from Methane Using N2O as Oxidant

2018-09-12
Increased production of shale gas motivated using methane as a chemical feedstock. For this reason, an economical process that converts methane into an easily transported and valuable chemical is needed. Direct and selective, on-site, production of methanol is desirable but challenging due to the inherent stability of methane. Selective methanol formation is proven to be possible on copper exchanged zeolites (Cu-ZSM-5 [1] and Cu-mordenite [2,3]) following a 3-step cyclic process: (i) oxidation of the Cu-zeolite with O2 at relatively higher temperatures (450 °C) to create reactive copper-oxo species, (ii) methane activation at moderate temperatures (120–200 °C) and (iii) admission of a solvent to extract methanol from the surface. However, the process lacks continuous methanol production with altering temperatures requires for the 3 different steps. In this study, continuous methanol production at temperatures lower than 300 °C is reported using Cu-SSZ-13 and compared to Cu-ZSM-5 and Cu-mordenite using CH4, N2O and water vapour as reactants. The effect of CH4, N2O and H2O on methanol selectivity is also investigated. Methanol production rates as high as 55 µmol CH3OH/g/h and methanol selectivity values as high as 40% are achieved on Cu-SSZ-13 [4].

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Citation Formats
B. İpek Torun, “Continuous Methanol Production from Methane Using N2O as Oxidant,” presented at the 7. Ulusal Kataliz Kongresi (9 - 12 Eylül 2018), Denizli, Türkiye, 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/78528.