Highly integrated reactor–separator systems for the recycling of homogeneous catalysts

Dreimann, Jens M.; Lutze, Philip; Zagajewski, Michael; Behr, Arno; Górak, Andrzej; Vorholt, Andreas J.

doi:10.1016/j.cep.2015.07.019

Cited by 52 publications

(80 citation statements)

References 30 publications

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“…[27]). 2 according to remark already written, when the membrane arrangement only concerns consecutive retentate retreatments (+n,0) and in absence of recycling, simulations are not exactly that of cascades. But for sake of simplicity in Figure captions all simulations are referred to in short with the same nomenclature as that of "cascades"…”

Section: Limitation Of the Simulation Rangementioning

confidence: 96%

Assessment and potential of membrane cascades for organic solvent nanofiltration of hydroformylation media through a graphical representation composed of performance maps

Lejeune

Rabiller-Baudry

Renouard

et al. 2018

Chemical Engineering Science

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et al.. Assessment and potential of membrane cascades for organic solvent nanofiltration of hydroformylation media through a graphical representation composed of performance maps. Chemical Engineering Science, Elsevier, 2018, 183, pp. AbstractThis paper aims at proposing a graphical representation composed of several performance maps to help to answer to some current questions that can puzzle membrane end-users facing the arrangement of membranes in cascade in order to better master separation of complex media. Indeed, different compromises can be highlighted according to realistic goals for the separation such as quality and recovery yield of each fraction/component, energy consumption and required membrane area. This representation needed first the systematic simulations of cascades of pre-selected configurations. These last ones were chosen thanks to the target application field, namely the organic solvent nanofiltration of a final synthesis media of hydroformylation that is a homogeneous catalysed reaction. We voluntary assumed the a priori limitation of the number of stages to 5, anticipating that more complex cascades will probably be too expensive (both operating and capital costs). The graphical representation by itself is based on sets of six 2D-maps. Each map highlights relationships selected in an appropriate way between two of the six selected criteria: extraction/recovery, retentate/permeate quality/purity, membrane filtering area and overall energy consumption. For sake of illustration, the separation of 2 components C and A was considered. C/A has been chosen in a 1/1000 molar ratio, where C corresponds to the less retained component of the catalytic system that must be recovered in the retentate and A corresponds to the less transmitted product to extract in the permeate. In realistic nanofiltration conditions achieved in toluene, the rejections were experimentally determined on the initial media to filter. C has a high rejection (88%) whereas A has a low one (30%). The simulations of cascades were established using these constant values for rejection and the experimental permeate flux. For sake of an illustration of the use of the graphical representation, a case study was finally discussed regarding a given target of recovery for the two desired components, namely at least 99% of C recovery and better than 70% of A extraction. A complementary multi-criteria analysis was added aiming at facilitating the decision-making.2

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Section: Limitation Of the Simulation Rangementioning

confidence: 96%

Assessment and potential of membrane cascades for organic solvent nanofiltration of hydroformylation media through a graphical representation composed of performance maps

Lejeune

Rabiller-Baudry

Renouard

et al. 2018

Chemical Engineering Science

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“…The first part (grey) shows the upstream, which consists of a continuously stirred tank reactor (CSTR, B1) and a decanter (B2). The setup is well known and approved for the hydroformylation of terminal long chain olefins . The hydroformylation of 1‐dodecene is carried out in a 1000 mL stainless steel continuous stirred tank reactor B1, which is operated at 90°C and 21 bar CO:H 2 (1:1).…”

Section: Process Designmentioning

confidence: 99%

Increasing selectivity of the hydroformylation in a miniplant: Catalyst, solvent, and olefin recycle in two loops

et al. 2016

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The application of thermomorphic solvent systems offers the combination of homogeneous catalysis in a single phase and catalyst recovery via phase separation. To increase economic feasibility the minimization of waste streams and side reactions is desired. For this, a continuous process for the hydroformylation of 1‐dodecene in the solvent system DMF/n‐decane is shown. While the Rh/Biphephos catalyst is recycled in DMF in a first loop, the n‐decane and remaining olefins are separated from the product via distillation to form the second loop. In this process the need for additional solvent supply and the isomerization reaction of 1‐dodecene is reduced significantly. The reaction toward internal olefins decreases from initially 15 to 3%. The stable hydroformylation process with a yield of the linear hydroformylation product of 55% and l/b‐ratio of 95/5 is shown for 120 h. © 2016 American Institute of Chemical Engineers AIChE J, 62: 4377–4383, 2016

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“…Complete recovery of the transition metal catalyst is necessary and more beneficial in terms of productivity of the reactions and this critical objective has been achieved by the concept of hybrid separation process by Dreimann et al . This process is used by combining two different separation techniques of thermomorphic multicomponent solvent systems and organic solvent nanofiltration (Figure ) in order to achieve complete catalyst separation and obtained rhodium recovery in >90 %.…”

Section: Organic Solvent Nanofiltrationmentioning

confidence: 99%

Recent Advances Utilized in the Recycling of Homogeneous Catalysis

Shende

Saptal

Bhanage

2019

The Chemical Record

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Homogeneous catalysts often show high activity and selectivity towards the various chemical transformations. Most of the transition metal‐based active catalysts are expensive, rare, and have strict regulations for their use in pharmaceutical products. Hence, there is a requirement to develop suitable technologies for the practical separation and recycling of metal complex catalysts along with the sustainability of the process. This review focuses on the recent techniques used for the catalyst separation, their recovery, and recyclability of the homogeneous form of catalysts based on their economic compatibility and industrial applications. Various homogeneous catalysts have been reviewed on the basis of their support or media, active centres and recyclability aspects of the catalysts. This review gives brief insights into the varied examples of different recycling techniques utilized in the past 6–7 years.

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Highly integrated reactor–separator systems for the recycling of homogeneous catalysts

Cited by 52 publications

References 30 publications

Assessment and potential of membrane cascades for organic solvent nanofiltration of hydroformylation media through a graphical representation composed of performance maps

Assessment and potential of membrane cascades for organic solvent nanofiltration of hydroformylation media through a graphical representation composed of performance maps

Increasing selectivity of the hydroformylation in a miniplant: Catalyst, solvent, and olefin recycle in two loops

Recent Advances Utilized in the Recycling of Homogeneous Catalysis

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