Asymmetric hydrogenation of methyl pyruvate in the continuous gas phase using Supported Ionic Liquid Phase (SILP) catalysis

Schneider, M.; Haumann, Marco; Wasserscheid, Peter

doi:10.1016/j.molcata.2013.04.022

Cited by 25 publications

(10 citation statements)

References 38 publications

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“…In this sense, novel materials named Supported Ionic Liquid Phase (SILP) [30][31][32][33][34][35], consisting of the immobilization of ILs on a solid support, have been proposed as a technical solution to overcome the mass transfer limitations of ILs in gas-liquid separation processes [36][37][38][39][40]. SILP materials are commonly prepared by spreading a thin layer of IL onto the surface of a solid support, mostly consisting of materials with high specific surface area [33], like TiO 2 [41], SiO 2 [42] or AC [39].…”

Section: Introductionmentioning

confidence: 99%

Ammonia capture from the gas phase by encapsulated ionic liquids (ENILs)

et al. 2016

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Encapsulated ionic liquids (ENILs) based on carbonaceous submicrocapsuleswere designed, synthesized and applied to the sorption of NH 3 from gas stream. The ENILs were prepared using three different task-specific ILs with adequate properties for NH 3 capture: 1-2(-hydroxyethyl)-3-methylimadazolium tetrafluoroborate (EtOHmimBF 4 ), choline bis(trifluoromethylsulfonyl)imide (CholineNTf 2 ) and tris(2hydroxyethyl)-methylammoniummethylsulfate [(EtOH) 3 MeNMeSO 4 ]. The ENILs synthesized were analyzed by different techniques to assess their morphology, chemical composition, porous structure and thermal stability. The capture of NH 3 was tested in fixed-bed experiments under atmospheric pressure. The influence of the type and load of IL, temperature (30, 45 and 60 ºC) and NH 3 inlet concentration was analyzed.Desorption of NH 3 from the exhausted ENILs was also studied at atmospheric pressure and temperatures in the range of 150 to 200 ºC. The ENILs prepared with task-specific ILs were found to be suitable for NH 3 capture in the fixed-bed operation. These systems can be a promising alternative to conventional absorption or adsorption due to: i) high sorption capacity controlled by IL selection, ii) remarkable mass transfer rate, iii) low 2 sensitiveness to high temperatures of the gas stream, iv) fast and complete regeneration of the exhausted ENIL at mild conditions; and v) recovery of NH 3 .

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Section: Introductionmentioning

confidence: 99%

Ammonia capture from the gas phase by encapsulated ionic liquids (ENILs)

et al. 2016

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“…M.J. Schneider et al. reported silica‐supported Ru complex of BINAP in [PrOHPyr][NTf 2 ] which was further used to catalyze the asymmetric hydrogenation reaction of α‐keto ester and gave 80–84 % yield of the products (Table , Entry 5) . J. Brunig et al.…”

Section: Synthesis and Applications Of Sils Having Different Buildingmentioning

confidence: 99%

Exploring the Potential of Supported Ionic Liquids as Building Block Systems in Catalysis

Kaur

Chopra

2020

ChemistrySelect

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Supported ionic liquid catalysts have gained significant attention in recent years to overcome the limitations of the homogeneous and heterogeneous catalysis. The thin film containing dispersed homogeneous catalyst in the ionic liquid have been immobilized onto various porous solid supports having a high surface area to synthesize supported ionic liquids (SILs) that acted as potential organocatalysts in organic green synthesis. Support materials, ionic liquids, and molecularly dispersed catalysts have played a significant role in increasing the catalytic activity of the SIL catalysts. In the present review, the literature of the last decade concerning the synthesis of SIL catalysts by using different strategies as well as their applications in organic synthesis is incorporated. The main emphasis of the present work is to critically analyze the recent developments in the supported molecular dispersed catalysts (such as lewis acids, organometallic complexes, metal nanoparticles, and chemical functionality associated with cation/ anion of ionic liquids) using ILs and explore their potential to act as building block systems in catalysis.

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“…68 Ru-based SILP catalysts have also been applied for the gas phase asymmetric hydrogenation of α-keto esters. 69 With Ru-BINAP, dissolved in the SILP 3-hydroxypropylpyridinium bis(trifluoromethylsulfonyl)imide on silica 100, a stable catalyst performance could be obtained for more than 50 h timeon-stream, although only a moderate enantioselectivity was reported.…”

Section: Supported Ionic Liquid Phases For Continuous Flow Processesmentioning

confidence: 99%

Ionic liquids and continuous flow processes: a good marriage to design sustainable processes

et al. 2015

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Asymmetric hydrogenation of methyl pyruvate in the continuous gas phase using Supported Ionic Liquid Phase (SILP) catalysis

Cited by 25 publications

References 38 publications

Ammonia capture from the gas phase by encapsulated ionic liquids (ENILs)

Ammonia capture from the gas phase by encapsulated ionic liquids (ENILs)

Exploring the Potential of Supported Ionic Liquids as Building Block Systems in Catalysis

Ionic liquids and continuous flow processes: a good marriage to design sustainable processes

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