Experimental study and model of reaction kinetics of heterogeneously catalyzed methylal synthesis

Drunsel, Jan-Oliver; Renner, Mario; Hasse, Hans

doi:10.1016/j.cherd.2011.09.014

Cited by 57 publications

(97 citation statements)

References 11 publications

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“…All these reactions are acid and base catalysed but they proceed relatively rapidly in aqueous methanolic solutions even without adding any catalyst [4]. Further methoxylation of MMG to CH 3 O(CH 2 O)CH 3 is favoured thermodynamically but does not proceed without a sufficient amount of catalyst [9].…”

Section: Introductionmentioning

confidence: 99%

Investigation of IR and Raman spectra of species present in formaldehyde-water-methanol systems

Gaca-Zając¹,

Smith

Nordon

et al. 2018

Vibrational Spectroscopy

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Formaldehyde forms a variety of hydrated and methoxylated species when reacted with water and methanol. Vibrational spectroscopy has been deployed for both remote and in situ sensing of formaldehyde species and it can be a useful tool for process development, monitoring and control at both laboratory and industrial scale, as well as for environmental, atmospheric and space monitoring. While IR and Raman spectroscopic studies of formaldehyde species in solid, liquid or gas phases have been reported, assignments of vibrational frequencies of relevant species in previous literature have been contradictory and incomplete. In this work we report IR and Raman spectra for formaldehyde-water-methanol solutions across a wide range of formaldehyde concentrations and solvent compositions. We present an analysis of vibrational spectra of formaldehyde-water-methanol systems using a combination of experimental measurements and gas phase quantum mechanical density functional theory simulations. For the first time, we explicitly consider spectra of oligomeric mixtures of formaldehyde species in relation to spectra of specific representative hydrated and methoxylated species and we resolve some previously reported contradictions in assignments of vibrational frequencies for formaldehyde systems.

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Section: Introductionmentioning

confidence: 99%

Investigation of IR and Raman spectra of species present in formaldehyde-water-methanol systems

Gaca-Zając¹,

Smith

Nordon

et al. 2018

Vibrational Spectroscopy

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“…Consequently, solid acid catalysts, which overcome these challenges, have gained growing attention in recent years. , , , The main groups considered in OME 1 synthesis are ion exchange resins, sulfonated tetrafluoroethylene resins, heteropoly acids, and zeolites. As the OME 1 synthesis is mainly limited by equilibrium, the catalysts are optimized based on engineering aspects like kinetic investigations, alternative formaldehyde sources, and demonstration in pilot plants.…”

Section: Indirect Synthesis Of Ome1mentioning

confidence: 99%

Challenges and Opportunities in the Production of Oxymethylene Dimethylether

Gierlich

Beydoun

Klankermayer

et al. 2020

Chemie Ingenieur Technik

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This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.To reduce the NO x and soot emissions of conventional diesel fuels, different renewable alternatives are investigated. One example are oxymethylene ethers (OME x ) of different chain lengths, which are intended to be used as diesel blends. Especially OME 3-5 show properties comparable to diesel. The key to producing longer chain OMEs is OME 1 as feedstock, which can react with formaldehyde to afford larger molecules. This article reviews different synthesis routes for OME 1 , in order to elucidate energy-efficient methods.

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“…In this spirit, the poly(oxymethylene) hemiformals (HFn, HO-[CH2O]n-CH3), that are formed in Reactions (3) and (4), are also alcohols and form ethers, i.e. the OME [12].…”

Section: Chemistry Of Ome Synthesismentioning

confidence: 99%

Processes for the production of OME fuels

Burger

Hasse²

2020

Proceedings

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Poly(oxymethylene) ethers (OME) are synthetic diesel fuels, which show extremely low soot formation during combustions. They are heavily discussed as future climate-friendly alternative to fossil diesel fuels, e.g. via an efuel route. To put this discussion on solid grounds, it is important to look at how OME are actually produced. This paper given an overview of the technology for the production of OME. The raw materials and the roles of the intermediates (synthesis gas, methanol, formaldehyde, dimethyl ether, and trioxane) in the valued added chain toward OME are explained. Technically feasible process concepts are described and assessed regarding economics and energetic efficiency. Current and future research directions for finding novel, improved production routes are discussed, before the paper is concluded.

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Experimental study and model of reaction kinetics of heterogeneously catalyzed methylal synthesis

Cited by 57 publications

References 11 publications

Investigation of IR and Raman spectra of species present in formaldehyde-water-methanol systems

Investigation of IR and Raman spectra of species present in formaldehyde-water-methanol systems

Challenges and Opportunities in the Production of Oxymethylene Dimethylether

Processes for the production of OME fuels

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