Sustainable ammonia synthesis: Just around the corner?

Klein, Channing; Manthiram, Karthish

doi:10.1016/j.joule.2022.09.001

Cited by 25 publications

(19 citation statements)

References 9 publications

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“…Electrocatalysis plays a critical role in future technologies for energy storage and sustainable synthesis. , The past decade has seen astonishing advances in the electricity-driven production of synthetic fuels and chemicals from CO 2 , − the renewable synthesis of NH 3 , − and the sustainable production of important platform and fine chemicals. − Beyond simply coupling chemical transformations with renewable electricity, however, the unique features of electrochemical driving forces also hold the promise of enabling novel types of reactivity.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Scission of Unactivated C(sp³)–C(sp³) Bonds through Real-Time Manipulation of Surface-Bound Intermediates

et al. 2023

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Electrocatalysis plays a critical role in future technologies for energy storage and sustainable synthesis, but the scope of reactions achievable using electricity remains limited. Here, we demonstrate an electrocatalytic approach to cleave the C(sp3)–C(sp3) bond in ethane at room temperature over a nanoporous Pt catalyst. This reaction is enabled by time-dependent electrode potential sequences, combined with monolayer-sensitive in situ analysis, which allows us to gain independent control over ethane adsorption, oxidative C–C bond fragmentation, and reductive methane desorption. Importantly, our approach allows us to vary the electrode potential to promote the fragmentation of ethane after it is bound to the catalyst surface, resulting in unprecedented control over the selectivity of this alkane transformation reaction. Steering the transformation of intermediates after adsorption constitutes an underexplored lever of control in catalysis. As such, our findings widen the parameter space for catalytic reaction engineering and open the door to future sustainable synthesis and electrocatalytic energy storage technologies.

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Section: Introductionmentioning

confidence: 99%

Electrocatalytic Scission of Unactivated C(sp³)–C(sp³) Bonds through Real-Time Manipulation of Surface-Bound Intermediates

et al. 2023

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“…Over the past decade, rapid advances to decarbonize ammonia production have focused on replacing steam methane reforming with water electrolysis prior to the Haber–Bosch process (Figure a) and on developing electrochemical pathways for ammonia synthesis (Figure b). ,,, These electrochemical pathways include the direct electrochemical nitrogen reduction reaction, lithium-mediated approaches, and plasma-assisted approaches. − The ammonia production cost distribution provides valuable insights into the economic viability of each development scenario (Figure c). When the interaction between energy efficiency and capital costs is considered, the analysis offers critical information for decision-making in the development of technologies for ammonia production.…”

Section: Resultsmentioning

confidence: 99%

Achieving Decentralized, Electrified, and Decarbonized Ammonia Production

Fernández,

Chapman,

Brown

et al. 2024

Environ. Sci. Technol.

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The rapid reduction in the cost of renewable energy has motivated the transition from carbon-intensive chemical manufacturing to renewable, electrified, and decarbonized technologies. Although electrified chemical manufacturing technologies differ greatly, the feasibility of each electrified approach is largely related to the energy efficiency and capital cost of the system. Here, we examine the feasibility of ammonia production systems driven by wind and photovoltaic energy. We identify the optimal regions where wind and photovoltaic electricity production may be able to meet the local demand for ammonia-based fertilizers and set technology targets for electrified ammonia production. To compete with the methane-fed Haber−Bosch process, electrified ammonia production must reach energy efficiencies of above 20% for high natural gas prices and 70% for low natural gas prices. To account for growing concerns regarding access to water, geospatial optimization considers water stress caused by new ammonia facilities, and recommendations ensure that the identified regions do not experience an increase in water stress. Reducing water stress by 99% increases costs by only 1.4%. Furthermore, a movement toward a more decentralized ammonia supply chain driven by wind and photovoltaic electricity can reduce the transportation distance for ammonia by up to 76% while increasing production costs by 18%.

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“…36,37 Our findings therefore widen the parameter space for catalytic reaction engineering by demonstrating that electrochemical potentials can induce transformations of surface adsorbates on an extended surface. This approach opens the door to the electricity-driven transformation of C(sp 3 )−C(sp 3 ) and C(sp 3 )−H bonds in alkanes at room temperature, laying the groundwork for future sustainable synthesis and energy storage technologies.…”

Section: Discussionmentioning

confidence: 99%

“…Electrocatalysis plays a critical role in future technologies for energy storage and sustainable synthesis. For example, the past decade has seen astonishing advances in the electricity-driven production of synthetic fuels and chemicals from CO2, 1,2 the renewable synthesis of NH3, 3,4 and the sustainable production of crucial platform and fine chemicals. [5][6][7][8][9] Beyond simply coupling chemical transformations with renewable electricity, however, the unique features of electrochemical driving forces also hold the promise of enabling novel types of reactivity.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Scission of Unactivated C(sp3)−C(sp3) Bonds Through Real-Time Manipulation of Surface-Bound Intermediates

Bakshi

Lucky

Chen

et al. 2023

Preprint

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We demonstrate an electrocatalytic approach to cleave the C(sp3)-C(sp3) bond in ethane at room temperature. This reaction is enabled by time-dependent electrode potential sequences, combined with monolayer-sensitive in-situ analysis, which allows us to gain independent control over ethane adsorption, C-C bond fragmentation, and methane desorption. Importantly, our approach allowed us to vary the electrode potential to promote the fragmentation of ethane after it is bound to the catalyst surface, resulting in unprecedented control over the selectivity of this alkane transformation reaction. Steering the transformation of intermediates after adsorption constitutes an underexplored lever of control in catalysis. As such, our findings widen the parameter space for catalytic reaction engineering and open the door to future sustainable synthesis and energy storage technologies.

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Sustainable ammonia synthesis: Just around the corner?

Cited by 25 publications

References 9 publications

Electrocatalytic Scission of Unactivated C(sp³)–C(sp³) Bonds through Real-Time Manipulation of Surface-Bound Intermediates

Electrocatalytic Scission of Unactivated C(sp³)–C(sp³) Bonds through Real-Time Manipulation of Surface-Bound Intermediates

Achieving Decentralized, Electrified, and Decarbonized Ammonia Production

Electrocatalytic Scission of Unactivated C(sp3)−C(sp3) Bonds Through Real-Time Manipulation of Surface-Bound Intermediates

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Sustainable ammonia synthesis: Just around the corner?

Cited by 25 publications

References 9 publications

Electrocatalytic Scission of Unactivated C(sp3)–C(sp3) Bonds through Real-Time Manipulation of Surface-Bound Intermediates

Electrocatalytic Scission of Unactivated C(sp3)–C(sp3) Bonds through Real-Time Manipulation of Surface-Bound Intermediates

Achieving Decentralized, Electrified, and Decarbonized Ammonia Production

Electrocatalytic Scission of Unactivated C(sp3)−C(sp3) Bonds Through Real-Time Manipulation of Surface-Bound Intermediates

Contact Info

Product

Resources

About

Electrocatalytic Scission of Unactivated C(sp³)–C(sp³) Bonds through Real-Time Manipulation of Surface-Bound Intermediates

Electrocatalytic Scission of Unactivated C(sp³)–C(sp³) Bonds through Real-Time Manipulation of Surface-Bound Intermediates