A novel process for the ethyl lactate synthesis in a simulated moving bed reactor (SMBR)

Pereira, Carla; Zabka, Michal; Silva, Viviana M. T. M.; Rodrigues, Alı́rio E.

doi:10.1016/j.ces.2009.04.003

Cited by 57 publications

(21 citation statements)

References 34 publications

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“…In most of the aforementioned works, advantage is taken from the sorption and catalytic properties of ion exchange resins. This dual behaviour presented by this type of materials, especially by Amberlyst-15, has demonstrated to be particularly effective, even for more complex chromatographic reactors as the simulated moving bed reactor [21][22][23][24][25][26][27][28]. Such ion exchange resins are constituted by crosslinked styrene divinylbenzene copolymers functionalized with acid sulfonic groups.…”

Section: Introductionmentioning

confidence: 97%

Sorption enhanced reactive process for the synthesis of glycerol ethyl acetal

Faria

Pereira

Silva

et al. 2014

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 97%

Sorption enhanced reactive process for the synthesis of glycerol ethyl acetal

Faria

Pereira

Silva

et al. 2014

Chemical Engineering Journal

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“…In addition, SMBR is continuously operated and is easy to implement in practice, compared with a true moving bed (TMB) system, because the latter involves movement of solid adsorbent which brings in a number of problems, such as mechanical difficulties of moving the solid, adsorbent attrition, fines removal, flow channeling, etc. Studies have been carried out to investigate SMBR applications on various reactions such as esterification, [1][2][3][4] etherification, 5 hydrogenation, 6,7 and isomerization, 8,9 as well as those involving sugar. 10,11 It has received growing interests in recent years for the production and preparation of some fine chemicals and pharmaceuticals, 12 where reactive distillation process might not be suitable, since some of the chemical species involved are nonvolatile and/or temperature sensitive.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a nonisothermal simulated moving‐bed reactor

Liu

et al. 2013

AIChE Journal

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Simulated moving-bed reactor (SMBR) is a multifunctional reactor wherein in situ separation of the products facilitates the reversible reaction to completion beyond thermodynamic equilibrium and at the same time obtaining products of high purity. In this work, we investigate the feasibility of introducing variances in adsorption strength, which has recently been proven to effectively improve SMB performance for pure separation, into an SMB system to include reactions. Synthesis of methyl acetate catalyzed by amberlyst 15 is considered as model system. Numerical simulations were carried out for an SMBR unit consisting of four columns and operated with various temperature distributions in the range of 308-323 K. SMBR productivities were evaluated and compared under the constraints of complete conversion and complete product separation. The effects of kinetics, heat transfer efficiency and adsorption strength of reactant were systematically investigated.

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“…Ethyl lactate is a biodegradable green solvent which can replace a range of damaging halogenated and toxic petroleum derived solvents [29]. It has excellent solvent properties and is produced in industry by chemical synthesis [30] with sulphuric acid used as catalyst.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of factors influencing the enantioselective enzymatic esterification of lactic acid in ionic liquid

Findrik

Németh

Gubicza

et al. 2011

Bioprocess Biosyst Eng

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In this paper esterification of ethanol and lactic acid catalyzed by Candida antarctica B (Novozyme 435) in ionic liquid (Cyphos 104) was studied. The influence of different variables on lipase enantioselectivity and lactic acid conversion was investigated. The variables investigated were ionic liquid mass/lipase mass ratio, water content, alcohol excess and temperature. Using the Design Expert software 2(3) factorial experimental plan (two levels, three factors) was performed to ascertain the effect of selected variables and their interactions on the ethyl lactate enantiomeric excess and lactic acid conversion. The results of the experiments and statistical processing suggest that temperature and alcohol excess have the highest effect on the ethyl lactate enantiomeric excess, while temperature and water content have the highest influence on the lactic acid conversion. The statistical mathematical model developed on the basis of the experimental data showed that the highest enantiomeric excess achieved in the investigated variable range is 34.3%, and the highest conversion is 63.8% at the initial conditions of water content at 8%; 11-fold molar excess of alcohol and temperature at 30 °C.

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A novel process for the ethyl lactate synthesis in a simulated moving bed reactor (SMBR)

Cited by 57 publications

References 34 publications

Sorption enhanced reactive process for the synthesis of glycerol ethyl acetal

Sorption enhanced reactive process for the synthesis of glycerol ethyl acetal

Analysis of a nonisothermal simulated moving‐bed reactor

Evaluation of factors influencing the enantioselective enzymatic esterification of lactic acid in ionic liquid

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