Kinetic modeling of carboxylation of propylene oxide to propylene carbonate using ion-exchange resin catalyst in a semi-batch slurry reactor

Jin, Xin; Bobba, Pallavi; Reding, Nicolas; Song, Ziwei; Thapa, Prem; Prasad, G.; Subramaniam, Bala; Chaudhari, Raghunath V.

doi:10.1016/j.ces.2017.04.018

Cited by 17 publications

(12 citation statements)

References 27 publications

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“…Ion exchange resins have been widely used in various fields such as waste water treatment 147 and catalytic reaction. 148 As early as 2001, Anthony et al 21 postulated that a combined anionic and cationic ion exchange resin would perform better than activated carbon for the adsorption of [C 4 mim][PF 6 ]. Subsequently, Vijayaraghavan et al 149 evaluated the sorption of [C 4 mim][Cl] onto different adsorbents, i.e.…”

Section: Methods For Recovery and Purification Of Ionic Liquids From ...mentioning

confidence: 99%

Recovery and purification of ionic liquids from solutions: a review

et al. 2018

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Section: Methods For Recovery and Purification Of Ionic Liquids From ...mentioning

confidence: 99%

Recovery and purification of ionic liquids from solutions: a review

et al. 2018

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“…where n 1 is the initial moles of CO 2 in the reservoir before the gas charging step, n 2 is the final moles of CO 2 in the reservoir after the gas charging step, V R is the reservoir volume, T R is the temperature of the reservoir (25 °C), and Z is the compressibility factor. 51 From the equilibrium pressure (P E ) recorded, the moles of CO 2 at equilibrium in the gas phase of the reactor (n E ) is estimated as…”

Section: Volumetric Solvent Expansion By Comentioning

confidence: 99%

“…From the initial ( P 1 ) and final pressures ( P 2 ) recorded in the CO 2 reservoir, CO 2 uptake, i.e., the total moles of CO 2 injected into the reactor, is estimated as where n 1 is the initial moles of CO 2 in the reservoir before the gas charging step, n 2 is the final moles of CO 2 in the reservoir after the gas charging step, V R is the reservoir volume, T R is the temperature of the reservoir (25 °C), and Z is the compressibility factor …”

Section: Experimental Proceduresmentioning

confidence: 99%

“…Given that CO 2 is in the vicinity of its critical point ( T c = 31.1 °C; P c = 72.8 bar) at typical carboxylation reaction temperatures, some studies reported that phase transitions can affect reaction rates during the synthesis of PC from PO and CO 2 . − For example, reaction rates are lower in the single-phase supercritical region and higher in the subcritical biphasic region (i.e., in CO 2 -expanded media) wherein the reactant concentrations are higher . Therefore, reliable estimation of the volumetric expansion of reaction mixtures caused by CO 2 dissolution is necessary to reliably interpret the kinetic data.…”

Section: Introductionmentioning

confidence: 99%

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Solubility of Carbon Dioxide in Carboxylation Reaction Mixtures

Bobba

Zhu

Snavely

et al. 2021

Ind. Eng. Chem. Res.

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The solubility of carbon dioxide (CO2) in pure solvents such as methanol, propylene carbonate (PC), propylene oxide (PO), and their mixtures was experimentally measured at different temperatures (348.2–368.2 K) and pressures (0.5–2.0 MPa). These data are required for analysis of rate processes in carboxylation of PO to PC, an industrially important reaction for the manufacture of alkyl carbonates. At higher pressures, increasing volumetric expansion of the solvents by CO2 was noted for both binary and ternary mixtures of the solvents with CO2. The Soave–Redlich–Kwong (SRK) equation of state predictions of the expansions were generally satisfactory for systems involving PC, methanol, and CO2 (±2–7% AAPD from experimental values). However, the deviation (±5–17% AAPD) was generally greater in systems involving PO as a solvent. The experimental volumetric expansion data were used to accurately represent the liquid volumes in the estimation of CO2 mole fractions in neat solvents. Similar to volume expansion trends, the SRK predictions of CO2 mole fractions in PC and methanol (±3–9% AAPD from experimental values) were also satisfactory, while the deviation was greater for the predicted CO2 mole fraction in PO (±28–33% AAPD). For the ternary (PO–PC–CO2, PO–methanol–CO2, PC–methanol–CO2) and quaternary (PO–PC–methanol–CO2) mixtures, vapor–liquid equilibrium (VLE) data were generated using the AspenPlus SRK-EOS model via flash calculations based on composition of the liquid mixture charged and the experimentally measured CO2 uptake at equilibrium.

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“…19 Currently, the commercialized industrial methods for DMC production mostly include phosgenation of methanol, 20 oxidative carbonylation of methanol (UBE 21 and ENIChem 22 processes), and transesterification of cyclic carbonates. 23,24 However, these methods suffer from crucial bottlenecks such as being explosion-prone, using poisonous and corrosive gases, 25 lower DMC yield and selectivity, 26,27 and economical restriction due to the availability of precursors (ethylene oxide or propylene oxide). The direct reaction between CO 2 and methanol 28 could be one of the alternatives to traditional industrial methods.…”

Section: Introductionmentioning

confidence: 99%

Dimethyl Carbonate Synthesis from Urea Methanolysis over ZnO–Nb₂O₅–TiO₂ Mixed Oxide Catalysts

Asghari

Ghiaci

2020

Ind. Eng. Chem. Res.

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Regarding the environmental downsides of using traditional methods for dimethyl carbonate (DMC) production, urea alcoholysis approaches have been the subject of intense interest in recent years. As a general trend, the dissipation of reactivity in metal oxide catalysts, which is mostly done by leaching, has caused a dramatic fall in the DMC yield. Herein, a series of catalysts with different molar ratios of ZnO, Nb2O5, and TiO2 were prepared by a modified sol–gel method and used in urea methanolysis to DMC. Incorporation of ZnO and Nb2O5 into the TiO2 matrix provided limited or even zero leaching, resulting in easy recovery and reusability of the catalysts. The parameters effective in the catalytic performance were investigated. Among the tested catalysts, ZnO(0.54)–Nb2O5(0.20)–TiO2(0.26) exhibited the best performance with a DMC yield of 39.1% under optimal conditions. Overall, this work provides a suitable method for increasing the stability of metal oxide catalysts.

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Kinetic modeling of carboxylation of propylene oxide to propylene carbonate using ion-exchange resin catalyst in a semi-batch slurry reactor

Cited by 17 publications

References 27 publications

Recovery and purification of ionic liquids from solutions: a review

Recovery and purification of ionic liquids from solutions: a review

Solubility of Carbon Dioxide in Carboxylation Reaction Mixtures

Dimethyl Carbonate Synthesis from Urea Methanolysis over ZnO–Nb₂O₅–TiO₂ Mixed Oxide Catalysts

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Kinetic modeling of carboxylation of propylene oxide to propylene carbonate using ion-exchange resin catalyst in a semi-batch slurry reactor

Cited by 17 publications

References 27 publications

Recovery and purification of ionic liquids from solutions: a review

Recovery and purification of ionic liquids from solutions: a review

Solubility of Carbon Dioxide in Carboxylation Reaction Mixtures

Dimethyl Carbonate Synthesis from Urea Methanolysis over ZnO–Nb2O5–TiO2 Mixed Oxide Catalysts

Contact Info

Product

Resources

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Dimethyl Carbonate Synthesis from Urea Methanolysis over ZnO–Nb₂O₅–TiO₂ Mixed Oxide Catalysts