Synthesis of dimethyl carbonate from ethylene carbonate and methanol using immobilized ionic liquid on amorphous silica

Kim, Dongwoo; Kim, Cheol-Woong; Koh, Jae-Cheon; Park, Dae‐Won

doi:10.1016/j.jiec.2010.01.054

Cited by 46 publications

(5 citation statements)

References 34 publications

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“…EC resulting from the coupling of EO with CO 2 is generally regarded as the “vector” for the ethylglycol (EG) in industry. EG is an important organic compound, , and produced by hydration of EC. − Numerous catalysts have also been exploited for the step 2 reaction,, such as molecular sieves, metal-based systems, − anion-exchange resins, functionalized chitosan, , polymer systems, silica, alkali metals, guaternary ammonium salts, and IL catalysts. − Especially, the 1-butyl-4-azo-1-azoniabicyclo[2.2.2]octane hydroxide IL exhibits high activity and has as much as 95% conversion at 70 °C and 4 h –1 with 10 times excess methanol to EC . Functional ILs, , such as carboxyl, amidogen, hydroxy, and carbonyl, or some hydrophilic group anions, such as halide, [BF 4 ] − , [CF 3 COO] − , [C 3 F 7 COO] − , and [CF 3 SO 3 ] − , were also designed.…”

Section: Process Scale Design For Ils Applicationsmentioning

confidence: 99%

Multiscale Studies on Ionic Liquids

et al. 2017

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Ionic liquids (ILs) offer a wide range of promising applications because of their much enhanced properties. However, further development of such materials depends on the fundamental understanding of their hierarchical structures and behaviors, which requires multiscale strategies to provide coupling among various length scales. In this review, we first introduce the structures and properties of these typical ILs. Then, we introduce the multiscale modeling methods that have been applied to the ILs, covering from molecular scale (QM/MM), to mesoscale (CG, DPD), to macroscale (CFD for unit scale and thermodynamics COSMO-RS model and environmental assessment GD method for process scale). In the following section, we discuss in some detail their applications to the four scales of ILs, including molecular scale structures, mesoscale aggregates and dynamics, and unit scale reactor design and process design and optimization of typical IL applications. Finally, we address the concluding remarks of multiscale strategies in the understanding and predictive capabilities of ILs. The present review aims to summarize the recent advances in the fundamental and application understanding of ILs.

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Section: Process Scale Design For Ils Applicationsmentioning

confidence: 99%

Multiscale Studies on Ionic Liquids

et al. 2017

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“…The problem was similar with traditional acidic ionic liquids supported on SiO 2 . Park and Amarasekara both found that the catalytic activities of traditional acidic ionic liquids supported on SiO 2 decreased more or less after 3–5 cycles. − These cases suggested that the loss of active sites happened in the reaction processes. In this work, the SWIL content of SWIL/SiO 2 -1 and SWIL/SiO 2 -2 reduced about 26.85% and 57.59% after 7 cycles compared with fresh SWIL/SiO 2 as shown in Table , but specific surface area and pore volume increased to some extent as shown in Table .…”

Section: Resultsmentioning

confidence: 99%

SiW₁₂O₄₀-Based Ionic Liquid Catalysts: Catalytic Esterification of Oleic Acid for Biodiesel Production

Zhen

Jiao

et al. 2012

Ind. Eng. Chem. Res.

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Heteropoly acid (SiW12O40)-based ionic liquid (SWIL) and silica supported SiW12O40-based ionic liquid (SWIL/SiO2) catalysts with different contents of SWIL were designed and prepared. The structures of the catalysts were experimentally characterized and theoretically analyzed, and catalytic activities and reusability of the catalysts were evaluated through an esterification reaction between oleic acid and methanol. The results showed that SWIL had excellent activity and good reusability. SWIL dissolved in the reaction mixture during the reaction process and could be precipitated and separated from products at room temperature after methanol and water were removed. The fresh SWIL/SiO2 had high catalytic activity close to that of SWIL and could be easily separated from the reaction system just through simple filtration. However, the leaching of SWIL in the esterification reaction caused the deactivation of SWIL/SiO2. SWIL contents of SWIL/SiO2 played an important role on the catalytic activity and reusability of SWIL/SiO2.

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“…At present, with the rapid development of the electric vehicle industry, the market demand of DMC in electrolytes is huge. Since the 1980s, numerous synthetic routes of DMC have been developed, mainly including phosgene process, 3 transesterification method, 4–6 gas-phase oxidative carbonylation of methanol (one-step process, 7,8 two-step process 9 ), methanol-urea alcoholysis method, 10,11 methanol-CO 2 method 12 and methanol-propylene oxide-CO 2 method. 13,14 In this section, the “three-parameter difference” was first applied to the analysis and comparison of the reaction route for the “synthesis of DMC with methanol as the initial raw material”, and then, the similar reaction paths with different raw materials were analyzed and compared to predict and evaluate the advantages and disadvantages.…”

Section: Analysis Of the Reaction Route For The Synthesis Of Dimethyl...mentioning

confidence: 99%

Theoretical analysis and evaluation of reaction routes by “three-parameter difference”

Song

Ding

et al. 2022

RSC Adv.

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Synthesis of dimethyl carbonate from ethylene carbonate and methanol using immobilized ionic liquid on amorphous silica

Cited by 46 publications

References 34 publications

Multiscale Studies on Ionic Liquids

Multiscale Studies on Ionic Liquids

SiW₁₂O₄₀-Based Ionic Liquid Catalysts: Catalytic Esterification of Oleic Acid for Biodiesel Production

Theoretical analysis and evaluation of reaction routes by “three-parameter difference”

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Synthesis of dimethyl carbonate from ethylene carbonate and methanol using immobilized ionic liquid on amorphous silica

Cited by 46 publications

References 34 publications

Multiscale Studies on Ionic Liquids

Multiscale Studies on Ionic Liquids

SiW12O40-Based Ionic Liquid Catalysts: Catalytic Esterification of Oleic Acid for Biodiesel Production

Theoretical analysis and evaluation of reaction routes by “three-parameter difference”

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Product

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SiW₁₂O₄₀-Based Ionic Liquid Catalysts: Catalytic Esterification of Oleic Acid for Biodiesel Production