Separation of Reaction Product and Palladium Catalyst after a Heck Coupling Reaction by means of Organic Solvent Nanofiltration

Tsoukala, Anna; Peeva, Ludmila; Livingston, Andrew G.; Bjørsvik, Hans‐René

doi:10.1002/cssc.201100355

Cited by 36 publications

(26 citation statements)

References 40 publications

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“…Nanofiltration membranes (NFMs) play a critical role in these processes, with several celebrated advantages, such as satisfactory rejection of multivalent ions and low molecular weight organic compounds (200–1000 Da), acceptable water or solvent permeation flux, and relatively low cost . In addition, nanofiltration is generally considered as more sustainable than other separation processes, including distillation, adsorption, and reverse osmosis owing to its energy‐saving, low‐carbon nature . Among all NFMs, thin‐film composite (TFC) NFMs exhibit the best performance in both scientific research and industrial application in terms of salt rejection and permeation flux .…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Alginate Coatings as Selective Layers for Nanofiltration Membranes with High Performance

Zhang

Zhong

et al. 2017

ChemSusChem

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It is highly desirable to develop environmentally friendly processes for fabricating thin-film composite (TFC) nanofiltration membranes (NFMs) from natural materials. However, the nanofiltration performance of such TFC NFMs is not satisfactory for practical applications owing to the lack of efficient methods for constructing ultrathin, uniform, stable coatings as selective layers. In this study, a contra-diffusion strategy is used to fabricate TFC NFMs with ultrathin cross-linked alginate coatings as selective layers without the use of any organic solvents. The as-prepared NFMs show a water permeation flux that is nearly one order of magnitude higher than that of other alginate-based TFC NFMs with similar salt rejection, and represents the best performance among all TFC NFMs from natural materials. These NFMs also demonstrate excellent mono-/divalent ion selectivity, as well as good long-term operation stability and antifouling properties. Furthermore, this strategy maximizes the reactant usage rate, minimizes the waste discharge and provides new insight into environmentally friendly fabrication of TFC NFMs.

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Section: Introductionmentioning

confidence: 99%

Ultrathin Alginate Coatings as Selective Layers for Nanofiltration Membranes with High Performance

Zhang

Zhong

et al. 2017

ChemSusChem

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“…High rejections ranging from 97% to 99.7% were observed with a 3.5-25 ppm residual content of Pd in the cross-coupling products. 175 Tsoukala et al 181 designed a SRNF process to separate and purify a target product and the Pd catalyst from a Heck coupling post-reaction mixture, shown in Fig. 14.…”

Section: Recovery Of Catalystsmentioning

confidence: 99%

“…15. 181 In summary, the recovery of catalysts and the purification of organic products by SRNF membranes should be further developed because this process constitutes potential improvements in cost, environmental protection and energy consumption.…”

Section: Recovery Of Catalystsmentioning

confidence: 99%

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

et al. 2014

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When considering energy consumption and environmental issues, solvent-resistant nanofiltration (SRNF) based on polymeric materials emerges as a process for substituting conventional separation processes of organic solutions, such as distillation, which consume high amounts of energy. Because SRNF does not involve phase transition, this process can potentially decrease the energy consumption and solvent waste and increase the yield of active components. Such improvements could significantly benefit a number of fields, such as pharmaceutical manufacturing and catalysis recovery, among others. Therefore, SRNF has gained a lot of attention since the recent introduction of solvent-stable polymeric materials in the manufacture of nanofiltration membranes. The membrane materials and the membrane structures depending on the fabrication methods determine the separation performance of polymeric SRNF membranes. Therefore, this article gives a comprehensive overview of the current state-of-art technologies of generating membrane materials and corresponding fabrication methods for SRNF membranes made from polymeric materials expected to provide the most benefit. The transport mechanisms and the corresponding models of SRNF membranes in organic media are also reviewed to better understand the mass transfer process. Various SRNF applications, such as in pharmaceutical and catalyst, among others, are also discussed. Finally, the difficulties and future research directions to overcome the challenges faced by SRNF processes are proposed. C

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“…OSN technology has been applied for the purpose of catalyst recovery in various homogeneous reactions such as alkylation, epoxidation, addition and substitution reactions for several years. Bjørsvik and group developed an OSN process to separate the Pd catalyst and a target product from Heck coupling postreaction mixture . In this process, they utilized a commercially available polyimide copolymer membrane with a molecular weight cut‐off value of 200 Da.…”

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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Separation of Reaction Product and Palladium Catalyst after a Heck Coupling Reaction by means of Organic Solvent Nanofiltration

Cited by 36 publications

References 40 publications

Ultrathin Alginate Coatings as Selective Layers for Nanofiltration Membranes with High Performance

Ultrathin Alginate Coatings as Selective Layers for Nanofiltration Membranes with High Performance

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

Recent Advances Utilized in the Recycling of Homogeneous Catalysis

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