Scaled-up production of C2 hydrocarbons by the oxidative coupling of methane over pelletized Na2WO4/Mn/SiO2 catalysts: Observing hot spots for the selective process
- Scaled-up production of C2 hydrocarbons by the oxidative coupling of methane over pelletized Na2WO4/Mn/SiO2 catalysts: Observing hot spots for the selective process
- 이종열; 전원진; 최재욱; 서영웅; 하정명; 서동진; 박영권
- Oxidative coupling of methane; Na2WO4/Mn/SiO2; Pellet; Hot spot; Natural gas
- Issue Date
- VOL 106, 851-857
- The oxidative coupling of methane (OCM) to produce ethane and ethylene, valuable hydrocarbons, was
scaled-up using differential, mid-scale, and bench-scale reactors with 0.030, 2.73, and 40 g of packed catalysts,
respectively. Organic and inorganic binders, such as methylcellulose, Al2O3, MgO, and TiO2, were
mixed with Na2WO4/Mn/SiO2 catalyst powder to produce catalyst pellets, and TiO2-mixed catalyst pellets
exhibited the highest C2 hydrocarbon yield despite the lowest active catalyst content. The formation of
hot spots, which suppressed the selective conversion to C2 hydrocarbons by further oxidation to CO
and CO2, was observed in the mid- and bench-scale reactors because of poor heat transfer. Inert-gasdiluted
reactants and lower O2 flow may inhibit the formation of hot spots and allow the development
of industry-feasible OCM processes.
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