Excellent performance of TiO 2 (B) nanotubes in selective transesterification of DMC with phenol derivatives

Gao, Yuan; Li, Zhenhuan; Su, Kunmei; Cheng, Bowen

doi:10.1016/j.cej.2016.04.036

Cited by 32 publications

(19 citation statements)

References 29 publications

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“…To achieve better catalytic performance, many recent efforts have been focused on the formation of mesoporous or nanostructured catalysts or the incorporation of active Ti species into support matrices. 92,95,96 For example, reported heterogeneous Ti-based catalysts include TiO 2 nanotubes, 93 TiO 2 supported on nanomaterials, 51,78,92,93 hetero Ti-containing mesoporous molecular sieves, 97 mesoporous amorphous TiO 2 nanoshell on hollow ZIF-8, 57 etc. The catalyst morphologies and activities varied along different types of supports, as shown in Figures 3 and 4.…”

Section: Classifications Of Heterogeneous Catalystsmentioning

confidence: 99%

“…As early as the 1970s, TiCl 4 has been reported as an active homogeneous catalyst for the transesterification of DMC with phenol . Since then, various titanium-based homogeneous or heterogeneous catalysts have been developed and illustrated for this reaction. ,,,− Compared with other heterogeneous catalysts, TiO 2 has been extensively studied, because of its ease of synthesis, low cost, innocuity, and environmental friendliness. To achieve better catalytic performance, many recent efforts have been focused on the formation of mesoporous or nanostructured catalysts or the incorporation of active Ti species into support matrices. ,, For example, reported heterogeneous Ti-based catalysts include TiO 2 nanotubes, TiO 2 supported on nanomaterials, ,,, hetero Ti-containing mesoporous molecular sieves, mesoporous amorphous TiO 2 nanoshell on hollow ZIF-8, etc.…”

Section: Classifications Of Heterogeneous Catalystsmentioning

confidence: 99%

“…TEM images for (a) the TiO 2 (B) nanotube, (b) core–shell TiO 2 @SiO 2 , (c) Ti–V-MCM-41, (d) C 60 -doped TiO 2 , (e) TiO 2 /MWCNT-C, (f) TiO 2 –RGO, and (g) SEM images for ZIF-8@1.39TiO 2 –0.1HDA . (h) DMC adsorbs over Ti cations (redrawn based on ref ).…”

Section: Classifications Of Heterogeneous Catalystsmentioning

confidence: 99%

“…Studies by Gao et al that combined in situ DRIFT and catalytic investigations showed that TiO 2 (B) nanotube (Figure a) is more active than the anatase TiO 2 for DMC transesterification with phenol. It appears that the tetracoordinated Ti-species is more active than the six-coordinated one, just as proposed previously .…”

Section: Classifications Of Heterogeneous Catalystsmentioning

confidence: 99%

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Recent Advances in Catalyst Development for Transesterification of Dialkyl Carbonates with Phenol

Song

Jin

Gao

et al. 2020

Ind. Eng. Chem. Res.

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Synthesis of diphenyl carbonate (DPC) from dimethyl carbonate (DMC) with phenol is the most prominent application of transesterification of dialkyl carbonates (DACs); this is a significant step for the nonphosgene manufacturing of polycarbonate, which is considered to be one of the best examples of green and sustainable transformations available on such a large scale. In the last decades, extensive efforts have been focusing on atom efficiency, increased safety, waste avoidance, and other process improvements for the transesterification synthesis of DPC. However, low product selectivity, separation, and catalyst deactivation remain bottlenecks of the process, despite recent significant progress. Therefore, the present interest focuses on rational design of highly efficient and stable catalysts. However, there is still a lack of a comprehensive summary on catalyst design and mechanism involved. Therefore, in this work, transesterification of DMC with phenol has been critically revised as a model case, to illustrate the structure–performance correlation and reaction pathways for transesterification with phenols. In this perspective, recent advances on experimental and investigations on rational design of heterogeneous catalysts, for facile liquid-phase reaction of DMC with phenol, have been systematically discussed, in terms of catalyst synthesis, surface characterization, and structure–function relationship. More importantly, plausible mechanisms for transesterification of DMC with phenol will be systematically discussed with the aim to provide insights into fundamental understanding on transesterification chemistry and improvement of activity, selectivity, and stability of these catalytic materials.

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Section: Classifications Of Heterogeneous Catalystsmentioning

confidence: 99%

Section: Classifications Of Heterogeneous Catalystsmentioning

confidence: 99%

Section: Classifications Of Heterogeneous Catalystsmentioning

confidence: 99%

Section: Classifications Of Heterogeneous Catalystsmentioning

confidence: 99%

See 2 more Smart Citations

Recent Advances in Catalyst Development for Transesterification of Dialkyl Carbonates with Phenol

Song

Jin

Gao

et al. 2020

Ind. Eng. Chem. Res.

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“…Additionally, the catalyst is cheap and easily available. Therefore, it is considered an industrialized synthetic route with the most promising application prospect for production of DPC at present [ 11 – 14 ].…”

Section: Introductionmentioning

confidence: 99%

Qualitative and Quantitative Analysis of the Product and By-Products from Transesterification between Phenol and Dimethyl Carbonate

Liu

et al. 2019

Journal of Analytical Methods in Chemistry

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By-products (phenyl salicylate, phenyl 4-hydroxybenzoate, and xanthone) from transesterification between phenol and dimethyl carbonate (DMC) were qualitatively analyzed by gas chromatography-mass spectrometry, and a gas chromatographic method with directed injection for simultaneous quantitative analysis of the product (DPC) and by-products of the transesterification has been established. Based on the results of qualitative and quantitative analyses, the mechanism of the by-products generation was preliminarily deduced. The sample for quantitative analysis was directly diluted in acetone, and related compounds were separated on an HP-5 capillary column and detected by a hydrogen flame ionization detector (FID). The product and by-products were well separated, the correlation coefficients (r) within the concentration range of 1.0 μg/mL–100 μg/mL were ≥0.9997, the relative standard deviations were between 0.5% and 4.4%, spiked recoveries were between 91.5% and 105.6%, and detection limits were between 0.11 and 0.18 μg/mL. The established method is simple, rapid, accurate, sensitive, and highly specific. It is suitable for simultaneous qualitative and quantitative analyses of the product and by-products of transesterification between phenol and DMC.

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Green Synthesis of Dimethyl Carbonate from CO₂ and Methanol: New Strategies and Industrial Perspective

Raza¹,

Ikram

Guo

et al. 2022

Advanced Sustainable Systems

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Dimethyl carbonate (DMC) is a commonly used and environmentally sustainable chemical compound and intermediate in a variety of industrial applications. To date, several large‐scale industrial DMC synthesis routes have been developed, including methanol phosgenation, transesterification, and oxidative carbonylation of methanol. However, these manufacturing routes have several disadvantages, such as the use of hypertoxic phosgene as raw material, costly processing, and explosion risks. The most encouraging and ecofriendly path is the green production of DMC from CO2 and methanol. Various catalytic materials have been examined concerning their suitability for DMC synthesis. The issues of low yield and difficulty in tests have not been resolved fundamentally, which is caused by the inherent problems of the synthetic pathway and limitations imposed by thermodynamics. The search for more efficient production routes has driven the activation of CO2 via electro‐assisted synthesis as well as membrane reactors, which can isolate products in real‐time to maximize DMC yield. The green synthesis of dimethyl carbonate catalyzed by different catalysts including Zr/Ce/Cu‐based nanocomposites, organometallic compounds, heteropoly acid, ionic liquid, metal‐organic frameworks, etc, is discussed in detail. Further, the structure–activity relationships and insights into molecular activation and catalytic mechanisms, as well as the identification of active sites on catalysts are addressed.

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Excellent performance of TiO 2 (B) nanotubes in selective transesterification of DMC with phenol derivatives

Cited by 32 publications

References 29 publications

Recent Advances in Catalyst Development for Transesterification of Dialkyl Carbonates with Phenol

Recent Advances in Catalyst Development for Transesterification of Dialkyl Carbonates with Phenol

Qualitative and Quantitative Analysis of the Product and By-Products from Transesterification between Phenol and Dimethyl Carbonate

Green Synthesis of Dimethyl Carbonate from CO₂ and Methanol: New Strategies and Industrial Perspective

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Excellent performance of TiO 2 (B) nanotubes in selective transesterification of DMC with phenol derivatives

Cited by 32 publications

References 29 publications

Recent Advances in Catalyst Development for Transesterification of Dialkyl Carbonates with Phenol

Recent Advances in Catalyst Development for Transesterification of Dialkyl Carbonates with Phenol

Qualitative and Quantitative Analysis of the Product and By-Products from Transesterification between Phenol and Dimethyl Carbonate

Green Synthesis of Dimethyl Carbonate from CO2 and Methanol: New Strategies and Industrial Perspective

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Product

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About

Green Synthesis of Dimethyl Carbonate from CO₂ and Methanol: New Strategies and Industrial Perspective