Formation kinetics of polyoxymethylene dimethyl ethers from methylal and trioxane with little water

Qin, Xiaofei; Lei, Shuang; Zhang, Xubin; Cao, Chen; Feng, Xin; Chen, Honglin; Zhao, Xiaoming; Yin, Yachen; Wu, Guilian

doi:10.1016/j.cjche.2020.06.011

Cited by 8 publications

(5 citation statements)

References 20 publications

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“…In general catalysts mostly follow a first order dependency. [45] For this reaction also a linear dependency of the reaction rate on the catalyst loading was assumed in literature, [29] which would correspond to an order in catalyst of one. Nevertheless, to the best of our knowledge no experimental verification about this hypothesis was performed, although, as this might provide essential insights into the mechanism of the reaction.…”

Section: Order In Catalystmentioning

confidence: 99%

“…To obtain an estimate of acidic sites in Amberlyst TM 15 the literature value of 0.43 mol H + /kg À 1 was utilized. [25] Thus, the mass of A15 could be 28 GC [29] 12 -29 HZSM-5 [a] 57.7 51.9 -53.1 GC [42]…”

Section: Order In Catalystmentioning

confidence: 99%

“…[25][26][27] However, the reaction kinetics gained considerable interest in recent investigations. [28][29][30][31] In order to analyze the generation of OME fuel, gas chromatography (GC) is widely applied. GC features the ability to distinguish and quantify the homologous OME n product mixtures.…”

Section: Introductionmentioning

confidence: 99%

“…GC features the ability to distinguish and quantify the homologous OME n product mixtures. [29,[32][33][34] Due to the chemical similarity, analysis via other techniques remains challenging. Nevertheless, the time required for the analysis of one sample is high compared to other methods.…”

Section: Introductionmentioning

confidence: 99%

“…Up to date, to the best of our knowledge, an order of one was assumed, but no experimental verification has been performed yet. [29]…”

Section: Introductionmentioning

confidence: 99%

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Oxymethylene Ether (OME) Fuel Catalyst Screening Using In Situ NMR Spectroscopy

Endres

Schuett

Kimmig

et al. 2023

Chemistry A European J

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Online NMR measurements are introduced in the current study as a new analytical setup for investigation of the oxymethylene dimethyl ether (OME) synthesis. For the validation of the setup, the newly established method is compared with state‐of‐the‐art gas chromatographic analysis. Afterwards, the influence of different parameters, such as temperature, catalyst concentration and catalyst type on the OME fuel formation based on trioxane and dimethoxymethane is investigated. As catalysts, AmberlystTM 15 (A15) and trifluoromethanesulfonic acid (TfOH) are utilized. A kinetic model is applied to describe the reaction in more detail. Based on these results, the activation energy (A15: 48.0 kJ mol−1 and TfOH: 72.3 kJ mol−1) and the order in catalyst (A15: 1.1 and TfOH: 1.3) are calculated and discussed.

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Section: Order In Catalystmentioning

confidence: 99%

Section: Order In Catalystmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Up to date, to the best of our knowledge, an order of one was assumed, but no experimental verification has been performed yet. [29]…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Oxymethylene Ether (OME) Fuel Catalyst Screening Using In Situ NMR Spectroscopy

Endres

Schuett

Kimmig

et al. 2023

Chemistry A European J

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Analysis of the Applications of Particle Swarm Optimization and Genetic Algorithms on Reaction Kinetics: A Prospective Study for Advanced Oxidation Processes

et al. 2022

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A bibliometric analysis of the Scopus database was implemented to assess the spread of two types of evolutionary algorithms (EAs), genetic algorithms (GA) and particle swarm optimization (PSO), on the study of reaction kinetics. Particular attention was given to applications for advanced oxidation processes (AOPs). The collaborations between countries and authors, as well as the keywords co‐occurrences, were investigated. Finally, the Gompertz and Logistic Substitution models (LSM) were employed to forecast future scenarios. It was observed that GA methods were the preferred algorithms for reaction kinetic studies, and the USA was the most influential country in terms of collaboration, followed by China. On the other hand, there was still poor collaboration for most countries; this was also observed for authors’ collaboration. In addition, literature concerning AOPs was still scarce. The forecasting suggested growth for implementing evolutionary algorithms, especially for the PSO, increasing its popularity regarding GA methods.

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Advancements and Challenges in the Synthesis of Oxymethylene Ethers (OMEs) as Sustainable Transportation Fuels

Geitner,

Schuett,

Zechel

et al. 2024

Chemistry A European J

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The urgent need for sustainable alternatives to fossil fuels in the transportation sector is driving research into novel energy carriers that can meet the high energy density requirements of heavy‐duty vehicles without exacerbating the climate change. This concept article examines the synthesis, mechanisms, and challenges associated with oxymethylene ethers (OMEs), a promising class of synthetic fuels potentially derived from carbon dioxide and hydrogen. We highlight the importance of OMEs in the transition towards non‐fossil energy sources due to their compatibility with the existing Diesel infrastructure and their cleaner combustion profile. The synthesis mechanisms, including the Schulz‐Flory distribution and its implications for OME chain length specificity, and the role of various catalysts and starting materials are discussed in depth. Despite advancements in the field, significant challenges remain, such as overcoming the Schulz‐Flory distribution, efficiently managing water byproducts, and improving the overall energy efficiency of the OME synthesis. Addressing these challenges is crucial for OMEs to become a viable alternative fuel, contributing to the reduction of greenhouse gas emissions and the transition to a sustainable energy future in the transportation sector.

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Formation kinetics of polyoxymethylene dimethyl ethers from methylal and trioxane with little water

Cited by 8 publications

References 20 publications

Oxymethylene Ether (OME) Fuel Catalyst Screening Using In Situ NMR Spectroscopy

Oxymethylene Ether (OME) Fuel Catalyst Screening Using In Situ NMR Spectroscopy

Analysis of the Applications of Particle Swarm Optimization and Genetic Algorithms on Reaction Kinetics: A Prospective Study for Advanced Oxidation Processes

Advancements and Challenges in the Synthesis of Oxymethylene Ethers (OMEs) as Sustainable Transportation Fuels

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