气候变化领域集成服务门户(CCPortal): Comparing pathways for electricity-based production of dimethoxymethane as a sustainable fuel

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DOI	10.1039/d1ee00689d
	Comparing pathways for electricity-based production of dimethoxymethane as a sustainable fuel
	Burre J.; Bongartz D.; Deutz S.; Mebrahtu C.; Osterthun O.; Sun R.; Völker S.; Bardow A.; Klankermayer J.; Palkovits R.; Mitsos A.
发表日期	2021
ISSN	17545692
起始页码	3686
结束页码	3699
卷号	14 期号:7
英文摘要	Synthetic dimethoxymethane (DMM) is a promising fuel or blend component as it offers outstanding combustion characteristics. DMM production from hydrogen (H2) and carbon dioxide (CO2) is technically feasible with established technology but results in a low overall process efficiency. Recent research in catalyst development has increased DMM yield significantly and new reaction pathways have been proposed. Yet, it remains unknown how the achievements in catalyst development affect process performance. To close this gap, we analyze processes based on five reaction pathways regarding exergy efficiency, production cost, and climate impact. As the pathways have different technology readiness levels, we develop a methodology that ensures consistent boundary conditions and model detail between pathways. The methodology enables a hierarchical optimization-based process design and evaluation. The results show that the non-oxidative (i.e., reductive, dehydrogenative, and transfer-hydrogenative) pathways consume stoichiometrically less H2 not only than the established and oxidative pathway, but also less than most other electricity-based fuels (e-fuels). The higher resource efficiency of these pathways increases process exergy efficiency from 75% to 84%; production cost (2.1$ Ldiesel-eq.-1) becomes competitive to other e-fuels; and the impact on climate change reduces by up to 92% compared to fossil diesel, if renewable electricity is utilized. Whereas the reductive pathway may already enable a sustainable production of DMM with only little catalyst improvements, the dehydrogenative and transfer-hydrogenative pathways still require a higher DMM selectivity and methanol conversion, respectively. With considerable catalyst improvements, a maximum exergy efficiency of 92% and minimum production cost of 2.0$ Ldiesel-eq.-1 are achievable. Our analyses show: With the non-oxidative pathways, the high potential of DMM is no longer restricted to its outstanding combustion characteristics but extended to its production. © The Royal Society of Chemistry.
英文关键词	Carbon dioxide; Carbon dioxide process; Climate change; Combustion; Costs; Efficiency; Exergy; Hydrogen fuels; Combustion characteristics; Design and evaluations; Hierarchical optimization; Overall process efficiencies; Renewable electricity; Resource efficiencies; Sustainable production; Technology readiness levels; Catalyst selectivity; alternative fuel; comparative study; electricity; methane
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190602
作者单位	Process Systems Engineering (AVT.SVT), Rwth Aachen University, Forckenbeckstraße 51, Aachen, 52074, Germany; Institute of Technical Thermodynamics, Rwth Aachen University, Schinkelstraße 8, Aachen, 52062, Germany; Institute of Technical and Macromolecular Chemistry, Rwth Aachen University, Worringerweg 1, Aachen, 52074, Germany; JARA-ENERGY, Templergraben 55, Aachen, 52056, Germany; Institute of Energy and Climate Research: Energy Systems Engineering (IEK-10), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, Jülich, 52425, Germany; Department of Mechanical and Process Engineering, Eth Zurich, Tannenstraße 3, Zurich, 8092, Switzerland
推荐引用方式 GB/T 7714	Burre J.,Bongartz D.,Deutz S.,et al. Comparing pathways for electricity-based production of dimethoxymethane as a sustainable fuel[J],2021,14(7).
APA	Burre J..,Bongartz D..,Deutz S..,Mebrahtu C..,Osterthun O..,...&Mitsos A..(2021).Comparing pathways for electricity-based production of dimethoxymethane as a sustainable fuel.Energy & Environmental Science,14(7).
MLA	Burre J.,et al."Comparing pathways for electricity-based production of dimethoxymethane as a sustainable fuel".Energy & Environmental Science 14.7(2021).