Die Rolle von Dimethylether (DME) als Schlüsselbaustein synthetischer Kraftstoffe aus erneuerbaren Rohstoffen

Arnold, Ulrich; Haltenort, Philipp; Delgado, Karla Herrera; Niethammer, Benjamin; Sauer, Jörg

doi:10.1007/978-3-662-58006-6_22

Cited by 4 publications

(3 citation statements)

References 119 publications

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“…Another option, which is de scribed here, is the direct synthesis of dimethyl ether (DME) from synthesis gas followed by DME conversion to hydrocarbons [10]. The procedure is closely related to methanol based processes, especially Methanol To Gasoline (MTG) processes, and feasibility has been de monstrated in several studies which are summarized in [11]. However, demonstration of the entire process chain from feedstocks to fuels and significantly above laboratory scale is still fragmentary and recent progress in this field, including engine tests, is presented here.…”

Section: Introductionmentioning

confidence: 99%

Gasoline from the bioliq® process: Production, characterization and performance

Michler

Wippermann

Toedter

et al. 2020

Fuel Processing Technology

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Within the so-called bioliq® process, renewable carbon resources, especially agricultural residues, are converted to gasoline. The process chain comprises pyrolysis of the feedstocks, gasification to synthesis gas, gas cleaning and conversion of synthesis gas to dimethyl ether (DME) followed by conversion of DME to hydrocarbons. Construction of all process units has been completed now and the entire plant has been successfully operated in several campaigns. Thus, hundreds of liters of a new alternative gasoline are available now, which allow for an extensive testing. The basic characteristics of the resulting bioliq®/100 fuel are described. It is rich in aromatics and a blend consisting of 90 Vol. % of conventional RON95 E5 fuel and 10 Vol. % of bioliq®/100, designated as bioliq®/10, has been produced which meets the DIN EN 228 standard. Initial measurements on a single cylinder research engine have been carried out focusing on efficiency and emissions. A comparison of bioliq®/10 with neat RON95 E5 revealed an improved knocking behavior of bioliq®/10 even by a small fraction of regenerative bioliq® fuel. Particle as well as hydrocarbon emissions from bioliq®/10 are significantly higher than in the case of RON95 E5. Increased particle emissions are attributed to the higher content of aromatics. Soot reactivity has been investigated and soot from bioliq®/10 exhibits higher reactivity than soot from RON95 E5.

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Section: Introductionmentioning

confidence: 99%

Gasoline from the bioliq® process: Production, characterization and performance

Michler

Wippermann

Toedter

et al. 2020

Fuel Processing Technology

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“…This option expands the possibilities for producing DME from renewable sources and strongly reduces greenhouse gas emissions on a well-to-wheels basis, together with the biomass option. Arnold et al [197] show that DME produced via PTF PtF processes is not only a good diesel substitute, but at the same time a key building block for producing other high-value synthetic fuels, including gasoline and OME as a promising alternative to methanol.…”

Section: Motivation For Dme Use In Heavy-duty Transportmentioning

confidence: 99%

Future Power Train Solutions for Long-Haul Trucks

et al. 2021

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Achieving the CO2 reduction targets for 2050 requires extensive measures being undertaken in all sectors. In contrast to energy generation, the transport sector has not yet been able to achieve a substantive reduction in CO2 emissions. Measures for the ever more pressing reduction in CO2 emissions from transportation include the increased use of electric vehicles powered by batteries or fuel cells. The use of fuel cells requires the production of hydrogen and the establishment of a corresponding hydrogen production system and associated infrastructure. Synthetic fuels made using carbon dioxide and sustainably-produced hydrogen can be used in the existing infrastructure and will reach the extant vehicle fleet in the medium term. All three options require a major expansion of the generation capacities for renewable electricity. Moreover, various options for road freight transport with light duty vehicles (LDVs) and heavy duty vehicles (HDVs) are analyzed and compared. In addition to efficiency throughout the entire value chain, well-to-wheel efficiency and also other aspects play an important role in this comparison. These include: (a) the possibility of large-scale energy storage in the sense of so-called ‘sector coupling’, which is offered only by hydrogen and synthetic energy sources; (b) the use of the existing fueling station infrastructure and the applicability of the new technology on the existing fleet; (c) fulfilling the power and range requirements of the long-distance road transport.

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“…MAL is produced on an industrial scale from formaldehyde and methanol in an acid-catalyzed reaction. ,, In recent work, catalysts have been developed for the direct oxidation of methanol to MAL and even for the hydrogenation of carbon dioxide directly to MAL, but these developments are presently still in an exploratory stage. , An interesting alternative to MAL as a starting material for the anhydrous OME production is DME. DME is a platform chemical that is produced directly from synthesis gas or by condensation from methanol and is, therefore, cheaper than MAL. ,,− Some publications consider the direct oxidation of DME to longer OME, but these works are also still in an exploratory stage. , …”

Section: Introductionmentioning

confidence: 99%

Synthesis of Methylal and Poly(oxymethylene) Dimethyl Ethers from Dimethyl Ether and Trioxane

Breitkreuz

Hevert

Schmitz

et al. 2022

Ind. Eng. Chem. Res.

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Poly(oxymethylene) dimethyl ethers (OME) are interesting synthetic fuels that could replace fossil diesel fuel. Therefore, economic routes for OME production have to be developed. One particularly interesting route is the synthesis of OME from dimethyl ether (DME) and formaldehyde. The principal feasibility of this route is established, but the physicochemical information on essential steps is still lacking. In particular, there is no data on the first step in this synthesis, which is the formation of methylal (MAL) from DME and formaldehyde. Kinetic batch experiments were carried out in a stirred batch autoclave with a commercially available acidic ion-exchange resin as a catalyst in the temperature range of 353−373 K for up to 200 h. Trioxane was used as a water-free source of formaldehyde. Due to the volatility of DME, the experiments were carried out under pressure; high-pressure magnetic resonance (NMR) spectroscopy was applied for the analysis. During the reaction, not only MAL but also OME are formed, as well as a side product, methyl formate (MeFo). Therefore, the equilibrium constant of the MAL formation had to be determined based on a reaction kinetic model of the entire reaction network. The formation of MAL was found to have a larger equilibrium constant than the subsequent oligomerization reactions leading to OME, but it is also much slower than these reactions.

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Die Rolle von Dimethylether (DME) als Schlüsselbaustein synthetischer Kraftstoffe aus erneuerbaren Rohstoffen

Cited by 4 publications

References 119 publications

Gasoline from the bioliq® process: Production, characterization and performance

Gasoline from the bioliq® process: Production, characterization and performance

Future Power Train Solutions for Long-Haul Trucks

Synthesis of Methylal and Poly(oxymethylene) Dimethyl Ethers from Dimethyl Ether and Trioxane

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