Molecular Separation with Organic Solvent Nanofiltration: A Critical Review

Marchetti, Patrizia; Jimenez‐Solomon, Maria F.; Székely, György; Livingston, Andrew G.

doi:10.1021/cr500006j

Cited by 1,317 publications

(1,008 citation statements)

References 417 publications

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“…The use of polymer-bound complexes in catalysis dates from about 30 years ago for meeting the need of separating soluble catalysts from the reaction mixtures [132,133]. For example, aminomethyl polystyrene resin-supported tin complex (PS-Sn) catalyst is an active and selective catalyst for the BV oxidation of cyclic and acyclic ketones including 2-adamantanone, 2-methylcyclohexanone, cyclohexanone, 2-tert-butylcyclohexanone, 4-tert-butylcyclohexanone, 4-methylcyclohexanone, 3-methyl-2-pentanone, 4-methyl-2-pentanone, and cyclopentanone using 30% H2O2 as oxidant.…”

Section: Polymer Based Sn Catalystsmentioning

confidence: 99%

Sn-based catalysts for Baeyer-Villiger oxidations by using hydrogen peroxide as oxidant

Cui

Shi

2016

Sci. China Mater.

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Baeyer-Villiger (BV) oxidation is one of the most important transformation reactions in synthetic organic chemistry. Catalytic versions of the BV oxidation are particularly attractive in practical applications, because the catalytic transformation substantially simplifies reaction process while minimizing reactant consumption as well as waste production. Further benefits are expected from replacing peracids, the traditionally used oxidant, by low cost and environmentally friendly hydrogen peroxide (H2O2). This review will first introduce very briefly the features of BV oxidation reactions, and the corresponding oxidants traditionally used. Afterwards, the emphasis will be placed on the specific Sn-based catalysts, their performance comparison for the BV oxidation reaction by using H2O2 as oxidant, and the catalytic mechanisms of most Sn-based catalysts reported so far, including homogeneous Sn-based catalysts (such as Sn-based fluorous biphase system catalysts), heterogeneous Sn-based catalysts (such as Sn-based zeolite catalysts, Sn-based mesoporous composites, Sn-incorporated clay catalysts, Sn-based metal oxide composites and polymer supported Sn catalysts). Finally, the Sn-based catalysts for BV oxidation are outlooked for their potentials and perspectives in enhancing the performance and then accelerating the practical applications of BV oxidations by using H2O2. The developing direction of the Sn-based catalytic BV reaction is also illustrated.

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Section: Polymer Based Sn Catalystsmentioning

confidence: 99%

Sn-based catalysts for Baeyer-Villiger oxidations by using hydrogen peroxide as oxidant

Cui

Shi

2016

Sci. China Mater.

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“…Firman et al used commercial membrane and in-house fabrication PVDF membrane to deacidify soybean oil and solvent recovery by nanofiltration [6]. Currently, organic solvent nanofiltration (OSN) is becoming a great deal of attention for alternative molecular purification technology because of its low energy usage and ambient temperature operation [7,8]. Organic solvent nanofiltration, it is sometimes called solvent resistant nanofiltration where a pressure driven membrane process that uses solvent resistant membranes to separate solutes of 100 to 1000 Da.…”

Section: Introductionmentioning

confidence: 99%

Separation of Fatty Acids From Palm Oil Using Organic Solvent Nanofiltration

Nur¹,

Ghazali²

2018

MJAS

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Distillation of fatty acid from traditional recovery method consumes a lot of energy. Membrane process is more preferred because it reduces energy consumption. In this work, the possibility of separating free fatty acid (FFA) from palm oil using organic solvent nanofiltration was studied. Various commercial organic solvent nanofiltration membranes were tested using dead end filtration for their ability to remove free fatty acid from palm oil/acetone mixture. In all membranes, triglycerides (TAG) were preferentially retained at increasing pressure, while FFA were permeated through the membrane. All the three membranes showed selective permeation of FFA, with Solsep 030306 gave the highest selectivity of FFA over triglycerides. The best fatty acid separation performance was achieved using NF030306 membrane with acetone at pressure in the range of 30 to 40 bar and 3.6 g/L concentration of fatty acid. Using NF030306 membrane, 55% of low fatty acid and 87% of triglycerides were rejected from the system. Good separation was achieved at high pressure and concentration. We successfully demonstrated the separation of fatty acid separation from palm oil using organic solvent nanofiltration could be achieved.Keywords: free fatty acid, palm oil, organic solvent nanofiltration, deacidification Abstrak Pemulihan tradisional asid lemak daripada minyak yang boleh dimakan menggunakan sejumlah besar tenaga. Jika penyulingan digantikan dengan proses membran, penggunaan tenaga boleh dikurangkan dengan banyak. Dalam kajian ini, kami akan mengkaji kemungkinan untuk memisahkan asid lemak bebas daripada minyak kelapa sawit dengan menggunakan penuras nano pelarut organik. Pelbagai pelarut organik membran penuras nano komersial telah diuji menggunakan penuras nano untuk keupayaan mereka untuk memisahkan asid lemak bebas daripada campuran kelapa sawit/aseton. Untuk semua membran, trigliserida adalah dikekalkan pada tekanan yang semakin meningkat, manakala asid lemak meresap melalui membran. Ketigatiga membran menunjukkan penyerapan terpilih asid lemak, bagaimanapun Solsep 030306 memberikan pemilihan tertinggi asid lemak/trigliserida. Pemisahan asid lemak yang terbaik dicapai dengan menggunakan membran NF030306 dengan aseton pada tekanan dalam lingkungan 30 hingga 40 bar dan 3.6 g/L kepekatan asid lemak. Penolakan asid lemak yang rendah iaitu 55% dan penolakan trigliserida yang tinggi sehingga 87% telah dicapai menggunakan membran NF030306. Pemisahan baik dicapai pada tekanan tinggi dan kepekatan tinggi. Ia menunjukkan pemisahan asid lemak daripada minyak kelapa sawit menggunakan penuras nano pelarut organik boleh dicapai.Kata kunci: asid lemak bebas, minyak sawit, penuras nano pelarut organik, penyahasidan

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“…Organic solvent nanofiltration (OSN) is an emerging pressure driven separation methodology that uses semi-permeable membranes to selectively separate on a molecular basis [1,2]. Polymeric integrally skinned asymmetric (ISA) membranes fabricated via immersion precipitation phase inversion remain the most commonly used membranes in OSN processes [2].…”

Section: Introductionmentioning

confidence: 99%