Technological evaluation of organic solvent nanofiltration for the recovery of homogeneous hydroformylation catalysts

•Successful recovery of post-hydroformylation and hydrogenation catalysts through OSN.•Using OSN to separate post-hydrogenation solvents proved viable.•OSN technology proved more cost and energy efficient compared to conventional methods. The prevalence of homogeneous catalysts, to produce high valu...

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Bibliographic Details
Published in:Chemical engineering research & design 2017-05, Vol.121, p.219-232
Main Authors: Peddie, Waylin L., van Rensburg, Jacobus N., Vosloo, Hermanus C.M., van der Gryp, Percy
Format: Article
Language:English
Subjects:
Alkenes
Catalysis
Catalyst recovery
Catalysts
Cobalt
Commodities
Distillation
Homogeneous catalyst
Hydroformylation
Hydrogenation
Metathesis
Nanofiltration
Organic solvent nanofiltration
Recovery
Rhodium
Solvents
Studies
Synthesis gas
Technological evaluation
Technology assessment
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Summary:•Successful recovery of post-hydroformylation and hydrogenation catalysts through OSN.•Using OSN to separate post-hydrogenation solvents proved viable.•OSN technology proved more cost and energy efficient compared to conventional methods. The prevalence of homogeneous catalysts, to produce high value commodities in the surfactant and detergent range by upgrading inter alia syngas and short chain olefins, through metathesis, hydroformylation and hydrogeneration, is hampered by the expensive, waste generating and destructive thermal separation methods required for the recovery of these catalysts. By using the membrane technology of organic solvent nanofiltration (OSN), the successful recovery of two commercially available homogeneous catalysts, the rhodium-based complex, HRh(CO)(PPh3)3, and the cobalt-based complex, Co(C5H7O2)3, from the solvents representative of the hydroformylation and hydrogenation reactions, with the STARMEM 240 membrane, was performed. The energy-efficiency of OSN for homogeneous catalyst recovery, commonly alluded to in literature, was investigated by performing a technological evaluation between OSN and a conventional downstream recovery process such as distillation. It was found that, using the ST-240 membrane, catalyst concentrations in the permeate stream can be successfully reduced to near negligible amounts (
ISSN:0263-8762
1744-3563
DOI:10.1016/j.cherd.2017.03.015