Scaled-up production of C-2 hydrocarbons by the oxidative coupling of methane over pelletized Na2WO4/Mn/SiO2 catalysts: Observing hot spots for the selective process

Authors
Lee, Jong YeolJeon, WonjinChoi, Jae-WookSuh, Young-WoongHa, Jeong-MyeongSuh, Dong JinPark, Young-Kwon
Issue Date
2013-04
Publisher
ELSEVIER SCI LTD
Citation
FUEL, v.106, pp.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 C-2 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-gas-diluted reactants and lower O-2 flow may inhibit the formation of hot spots and allow the development of industry-feasible OCM processes. (c) 2013 Elsevier Ltd. All rights reserved.
Keywords
DOPED TIO2 CATALYSTS; MN/NA2WO4/MGO CATALYSTS; SURFACE BASICITY; PERFORMANCE; LA2O3; TEMPERATURE; KINETICS; GAS; DOPED TIO2 CATALYSTS; MN/NA2WO4/MGO CATALYSTS; SURFACE BASICITY; PERFORMANCE; LA2O3; TEMPERATURE; KINETICS; GAS; Oxidative coupling of methane; Na2WO4/Mn/SiO2; Pellet; Hot spot; Natural gas
ISSN
0016-2361
URI
https://pubs.kist.re.kr/handle/201004/128211
DOI
10.1016/j.fuel.2013.01.026
Appears in Collections:
KIST Article > 2013
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