Mesoporous amorphous TiO2 shell-coated ZIF-8 as an efficient and recyclable catalyst for transesterification to synthesize diphenyl carbonate

Jia, Bingying; Cao, Ping; Zhang, Hua; Wang, Gongying

doi:10.1007/s10853-019-03595-5

Cited by 13 publications

(12 citation statements)

References 48 publications

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“…Both homogeneous and heterogeneous catalysts were investigated for the transesterification of DMC with phenol. Typical heterogeneous catalysts, including modified carbon 5, MoO 3 6, TiO 2 7, 8, PbO 9, 10, V 2 O 5 11, Bi 2 O 3 12, and 12‐molybdophosphoric salts 13, possessed the benefits of easy separation and recovery for reuse; however, their relatively low activity and selectivity as well as easy deactivation limit their industrialization. On the other hand, a homogeneous catalyst has higher activity and selectivity, which is closer to industrial application.…”

Section: Introductionmentioning

confidence: 99%

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Stable Organic Titanium Catalysts and Reactive Distillation Used for the Transesterification of Dimethyl Carbonate with Phenol

Shen

et al. 2020

Chem Eng & Technol

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The transesterification of dimethyl carbonate with phenol to methyl phenyl carbonate (MPC) was investigated on novel catalysts such as titanium diisopropoxide bis(ethyl acetoacetate) and titanium dibutoxide bis(ethyl acetoacetate) in a closed batch reactor at 185-206°C under high pressure. The produced methanol could be removed efficiently by reactive distillation in order to overcome the equilibrium. The prepared catalysts have higher resistance to water than titanium alkoxides. Phenol conversion as high as 86.4 % with an MPC selectivity of 99.4 % was achieved under optimal reaction conditions within 9 h. Most of the catalytic activity was retained after repeated use for ten times.

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Section: Introductionmentioning

confidence: 99%

“…Mainly two reaction processes were reported so far in the literatures for the reaction of DMC and phenol. In one process, the reaction was carried out in a glass reactor at atmospheric pressure 5, 7, 9. Phenol and catalyst were charged into the reactor, followed by heating to a certain temperature (mostly at 150–180 °C).…”

Section: Introductionmentioning

confidence: 99%

Stable Organic Titanium Catalysts and Reactive Distillation Used for the Transesterification of Dimethyl Carbonate with Phenol

Shen

et al. 2020

Chem Eng & Technol

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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%

“…Therefore, research toward the development of heterogeneous catalysts for this reaction has consequently attracted considerable attention. Most of the heterogeneous catalysts are mainly catalysts based on Ti, Pb, Mo, and Mg metals, ,,,,,− with several reports on new metals, such as V, − Sm, and Ce . Furthermore, a few reports that were focused on the intrinsic kinetics and mechanism of the transesterification reaction have been published. − …”

Section: Classifications Of Heterogeneous Catalystsmentioning

confidence: 99%

“…The transesterification of DACs with aliphatic alcohols follows the HSAB theory, while the reaction between DACs and aromatic alcohols does not follow the HSAB theory. Typical examples of aliphatic nucleophiles that react with DACs include transesterifications of DMC or diethyl carbonate (DEC) with various alcohols, diols, or glycerol. − Plenty has been exploited on this type of reaction, including catalyst development, building of kinetic models, exploration of the mechanisms, etc. ,− A typical example of aromatic nucleophiles react with DACs is transesterification between DMC and phenol to form DPC, on which extensive efforts should be focused − …”

Section: Introductionmentioning

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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Development of highly permeable and antifouling poly(vinylidene fluoride) hybrid membranes tailored with ZIF‐8 metal–organic frameworks for water treatment

Rameesha

Rana

Nagendran

2023

Polymers for Advanced Techs

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This study deals with the making of poly(vinylidene fluoride) (PVDF) hybrid ultrafiltration (UF) membranes incorporated with zeolitic imidazolate framework-8 (ZIF-8) nanocrystals. The surface morphology and roughness of ZIF-8 are explored in terms of atomic force microscopy (AFM) and scanning electron microscopy (SEM) whereas their distribution in PVDF matrix and antibacterial activity are probed by energy dispersive X-ray (EDX) analysis and zone of inhibition test. The chemical functionality of ZIF-8 is verified by Fourier transform infrared (FTIR) and X-ray diffraction (XRD) spectroscopic studies. The permeability of hybrid membranes is raised to 2 wt% addition of ZIF-8 into the PVDF matrix owing to an enhancement in hydrophilicity and porosity. The FESEM images of the top and cross-section view make visible the formation of macrovoids with the addition of ZIF-8. On account of high porosity and surface hydrophilicity, the pure water permeation of hybrid membranes is increased to 278.6 Lm À2 h À1 . The hybrid membranes showed higher rejection and permeate flux of bovine serum albumin (BSA; 92.8 Lm À2 h À1 ) and humic acid (HA; 94.3 Lm À2 h À1 ) owing to the synergetic effect of their enhanced hydrophilicity and surface roughness. This is confirmed by the higher flux recovery ratio (FRR) and lower irreversible fouling characteristics of hybrid PVDF membranes. The atomic absorption spectroscopy (AAS) revealed the long-standing stability of ZIF-8 in the PVDF matrix. Among all, the PVDF hybrid membrane with 2 wt% of ZIF-8 showed excellent permeability, antifouling, and antibiofouling ability and was found to be more effective in water treatment applications.

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Mesoporous amorphous TiO2 shell-coated ZIF-8 as an efficient and recyclable catalyst for transesterification to synthesize diphenyl carbonate

Cited by 13 publications

References 48 publications

Stable Organic Titanium Catalysts and Reactive Distillation Used for the Transesterification of Dimethyl Carbonate with Phenol

Stable Organic Titanium Catalysts and Reactive Distillation Used for the Transesterification of Dimethyl Carbonate with Phenol

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

Development of highly permeable and antifouling poly(vinylidene fluoride) hybrid membranes tailored with ZIF‐8 metal–organic frameworks for water treatment

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