Res. Chem. Intermed.
, Vol. 34, Nos 8–9, pp. 811–816 (2008)
Koninklijke Brill NV, Leiden, 2008.
Also available online - www.brill.nl/rci
Mass- and heat-transfer-enhanced catalyst system for
Fischer–Tropsch synthesis in ﬁxed-bed reactors
, JAE-HONG RYU
, HYUNKU JOO
, JAEKYUNG YOON
and JUNG-IL YANG
Synfuel Research Center, Korea Institute of Energy Research, Daejeon 305-343, South Korea
Department of Chemical and Biological Engineering, Korea University,
Seoul 136-701, South Korea
Received 6 July 2007; accepted 29 August 2007
Abstract—Fischer–Tropsch synthesis (FTS) was carried out using Al
-supported Co catalyst
coated on metallic monolith. Considering the liberation of a large amount of heat from the highly
exothermic FTS reaction, catalytic activity of Co catalyst coated on metallic monolith was tested and
compared with that of pellet-type catalysts. The reaction was carried out in a conventional tubular
ﬁxed-bed reactor and simulated distillation (SIMDIS) analysis method was used to determine the
liquid products distribution. Proper control of degree of reaction, as well as the reaction temperature
gave rise to a shift of products selectivity toward higher hydrocarbons, especially C
Keywords: Fischer–Tropsch synthesis; Co catalyst; metallic monolith; mass-transfer limitation.
The gas-to-liquid (GTL) process can be one promising and effective route of
producing synthesis fuel in mass production using natural gas at remote areas.
Development of a Fischer–Tropsch synthesis (FTS) catalyst and reactor system is
one of core technologies of the GTL process. The FTS process produces diverse
kinds of oleﬁns and parafﬁns of different chain length, highly depending upon
the nature of the catalysts and the reaction temperatures. The major issues in
FTS involve the dispersion of reaction heat that causes hot spots on the catalyst
surface, bringing about thermal heterogeneity, resulting in a decrease of liquid
hydrocarbon productivity because of undesirable side reactions such as methanation
and deposition of carbon , as well as an increase of catalyst fouling and sintering.
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