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

Title
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
Authors
이종열전원진최재욱서영웅하정명서동진박영권
Keywords
Oxidative coupling of methane; Na2WO4/Mn/SiO2; Pellet; Hot spot; Natural gas
Issue Date
2013-04
Publisher
Fuel
Citation
VOL 106, 851-857
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/44603
ISSN
00162361
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KIST Publication > Article
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