Carbon-neutral fuels and chemicals: Economic analysis of renewable syngas pathways via CO2 electrolysis

Moreno-González, Marta; Berger, Angelina; Borsboom-Hanson, Tory; Mérida, Walter

doi:10.1016/j.enconman.2021.114452

Cited by 33 publications

(18 citation statements)

References 58 publications

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“…As an important platform technology, syngas (mixture of CO and H 2 ) conversion can effectively bridge nonpetroleum carbonaceous resources with fuels and building-block chemicals (Figure ), and it is rather mature to produce syngas through gasification of coal/biomass/waste or via reforming natural gas/shale gas/CO 2 . In particular, CO 2 feedstock for syngas production provides a promising potential route to synthesize carbon-neutral fuels and chemicals, and it is expected to play a pivotal role in achieving carbon neutrality in the future. − …”

Section: Introductionmentioning

confidence: 99%

Advances in Selectivity Control for Fischer–Tropsch Synthesis to Fuels and Chemicals with High Carbon Efficiency

Lin

et al. 2022

ACS Catal.

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Fischer–Tropsch synthesis (FTS) is a versatile technology to produce high-quality fuels and key building-block chemicals from syngas derived from nonpetroleum carbon resources such as coal, natural gas, shale gas, biomass, solid waste, and even CO2. However, the product selectivity of FTS is always limited by the Anderson–Schulz–Flory (ASF) distribution, and the key scientific problems including selectivity control, energy saving, and CO2 emission reduction still challenge the current FTS technology. Herein, we review recent significant progress in the field of FTS to obtain specific target products including fuels, olefins, aromatics, and higher alcohols with high selectivity. These achievements are enabled by developing highly efficient catalysts and a controlled reaction pathway based on an integrated process. The structural nature of catalytic active sites and established structure–performance relationships are clarified. Moreover, we specially focus on the carbon utilization efficiency, and the efforts to tune the preferential formation of value-added chemicals and strategies to reduce CO2 selectivity are summarized. The challenges and the perspectives for future FTS technology development with high carbon efficiency are also discussed.

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Section: Introductionmentioning

confidence: 99%

Advances in Selectivity Control for Fischer–Tropsch Synthesis to Fuels and Chemicals with High Carbon Efficiency

Lin

et al. 2022

ACS Catal.

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“…Higher oxygenates (also called higher alcohols, HA), referring to terminal linear α-alcohols and α-aldehydes with two or more carbon numbers, are widely applied as fuels, fuel additives, or intermediates for the synthesis of various commodity and specialty products. − Syngas, a mixture of CO and H 2 derived from nonpetroleum resources including coal, biomass, nature gas, solid waste, and CO 2 , can be converted to clean fuels, olefins, oxygenates, and other value-added chemicals. − Due to the gradual depletion of crude oil reserves and increasing environmental issues, conversion of syngas to oxygenates, which is also known as higher alcohol synthesis (HAS), has attracted great attention from academic and industrial communities. − …”

Section: Introductionmentioning

confidence: 99%

Maximizing the Interface of Dual Active Sites to Enhance Higher Oxygenate Synthesis from Syngas with High Activity

et al. 2023

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Selective synthesis of higher oxygenates from syngas provides a promising route for the conversion of nonpetroleum carbon resources into valuable chemicals. However, it remains a grand challenge to design highly efficient and stable dual-sites structures to promote the production of higher oxygenates. Herein, we reported an effective method to maximize the interface of dual active sites via designing the structure of alloy carbide derived from the FeCo layered double hydroxide precursor. Cobalt atoms were well-distributed and doped into Fe 2 C to form (Fe x Co y ) 2 C alloy carbide. The atomic-scale contact Fe−Co interfacial sites could achieve a >35% oxygenate selectivity at a CO conversion of >80% during 200 h of running, and a high space−time yield of 183.9 mg/g cat. /h for oxygenates with 95.6% being the C 2+ OH fraction was obtained. The kinetic study confirmed that the apparent activation energy of (Fe x Co y ) 2 C alloy carbide was lower than that of separated Fe 2 C-Co 2 C dual sites. This work provides a strategy for the design of an effective catalyst for selective synthesis of higher oxygenates from syngas by tuning the interface of dual active sites at an atomic level.

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“…This strategy provides a better quantification of the economic consequences of coproducing H 2 : it can be valorized, but at the same time it does represent a disadvantage, as there are more efficient ways to produce it. To our knowledge, only Moreno-Gonzalez et al 20 have followed a similar methodological approach in this research area; however, they considered fewer configurations and a different operating context and process lay-out compared to the present work. We consider a large-scale plant (65 t/d syngas output) that runs directly on solar and wind energy (priced at €25/MWh), assuming that the electrolyzers have load-following capability (Figure S1).…”

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confidence: 99%

“…Low-temperature electrochemical routes are currently considerably more expensive than these technologies but could become competitive through significant performance improvements. 18,20 The case for integrating CO 2 capture and conversion in a different value chain, involving amine-based capture from flue gases, was recently demonstrated. 29 Similar trade-offs between the integrated and sequential routes were identified.…”

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confidence: 99%

The Economics of Electrochemical Syngas Production via Direct Air Capture

et al. 2023

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Carbon-neutral fuels and chemicals: Economic analysis of renewable syngas pathways via CO2 electrolysis

Cited by 33 publications

References 58 publications

Advances in Selectivity Control for Fischer–Tropsch Synthesis to Fuels and Chemicals with High Carbon Efficiency

Advances in Selectivity Control for Fischer–Tropsch Synthesis to Fuels and Chemicals with High Carbon Efficiency

Maximizing the Interface of Dual Active Sites to Enhance Higher Oxygenate Synthesis from Syngas with High Activity

The Economics of Electrochemical Syngas Production via Direct Air Capture

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