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Effectiveness factors and mass transfer in trickle‐bed reactors
Author(s) -
Herskowitz Mordechay,
Carbonell R. G.,
Smith J. M.
Publication year - 1979
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690250209
Subject(s) - mass transfer , trickle bed reactor , catalysis , hydrogen , styrene , chemistry , chemical engineering , trickle , particle (ecology) , oxide , flow (mathematics) , aluminum oxide , waste management , chromatography , nuclear engineering , materials science , aluminium , mechanics , organic chemistry , engineering , copolymer , polymer , oceanography , physics , political science , law , geology
Rates of hydrogenation of α‐methyl styrene were measured at 40.6°C and 1 atm in a recycle, trickle‐bed reactor using a palladium/aluminum oxide catalyst. Data for different hydrogen concentrations in the gas and liquid feed streams suggested that except, at high liquid flow rates, on part of the outer surface of the catalyst the mass transfer limitation was very small, indicating a gas covered type of surface. A procedure was developed for evaluating effectiveness factors for the nonuniform boundary conditions existing when part of the particle surface is covered by gas.