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Recovery of transition metal complex by reverse flow adsorption
Author(s) -
Dunnewijk Jeroen,
Bosch Hans,
de Haan André B.
Publication year - 2008
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.11355
Subject(s) - adsorption , desorption , mass transfer , chemistry , work (physics) , transition metal , thermodynamics , limiting , chemical engineering , catalysis , materials science , chromatography , organic chemistry , engineering , mechanical engineering , physics
Reverse flow adsorption (RFA) is a technique with a definite potential to prevent the leaching of a homogenous catalyst. In this work, we model an RFA‐process for a continuous ideally stirred tank reactor with an adsorption bed upstream and another one downstream from the reactor. The model parameters concerning adsorption equilibrium and kinetics are taken from previous experimental studies on CoCl 2 adsorption on polymer‐bound trifenylfosfine. We use this model to study the concentration profiles of CoCl 2 in the adsorption beds during consecutive adsorption–desorption cycles. The model calculations show that the concentration profile eventually reaches a fixed position after a number of adsorption–desorption cycles, even though internal mass transfer was a limiting factor. Hence, the transition metal is kept within the system boundaries, which is an essential requirement for the application of RFA. © 2007 American Institute of Chemical Engineers AIChE J, 2008