Ammonia Synthesis by Mechanochemistry

Cuccu, Federico; Browne, Duncan L.; Porcheddu, Andrea

doi:10.1002/cctc.202300762

Cited by 3 publications

(2 citation statements)

References 42 publications

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“…Additionally, reducing the particle sizes of the solid during the grinding process enhances its surface area, creating new active sites that can interact with activated hydrogen. 30 However, the reaction only reaches completion with a liquid alkene. Therefore, a different explanation is needed to understand this behavior.…”

Section: Resultsmentioning

confidence: 99%

“…We suggest that the repeated loading and mechanical deformation caused by the grinding ball on the solid mixture can eventually limit the exposure of new interfaces, reducing reactivity within the bulk. 30,31 Although the grinding effect results in improved reduction efficiency of solid compounds at first, this phenomenon eventually becomes less effective as the substance becomes trapped within the bulk. 29…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Mechanically accelerated catalytic hydrogenation: correlating physical state, reaction rate, and interface area

Cuccu,

Basoccu,

Fattuoni

et al. 2024

Green Chem.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Mechanically accelerated catalytic hydrogenation: correlating physical state, reaction rate, and interface area

Cuccu,

Basoccu,

Fattuoni

et al. 2024

Green Chem.

Self Cite

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Catalytic Ammonia Formation in a Microreaction Chamber with Electrically Intensified Arc Plasma

Van Duc Long,

Pourali,

Lamichhane

et al. 2024

ChemCatChem

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Ammonia (NH3) production is of global concern for today’s food supply security and as future energy vector. Plasma technology can add to supply‐chain resilience of fertilizer production and improve the environmental profile using renewable energy; allowing distributed NH3 production. With the objective to provide process intensification of small‐capacity reactors for local supply, a novel micropyramid‐disk plasma reactor operated in micro‐arc mode was developed. NH3 was synthesized from N2, nitrogen, and H2, hydrogen over Ru/MCM‐41 catalyst at atmospheric pressure. The microplasma brings plasma and catalyst surface close together and intensifies the electric field. The arc plasma elevates temperature, ‘nonthermal’, releasing high‐energy free electrons, known to be effective in converting low‐reactive molecules. The study demonstrates that microplasma, with reduced electrode‐to‐electrode dimensions and a microstructured reaction environment, enhances the performance of the NH3 synthesis and opens novel process windows. This is detailed on the impact of feed ratio (N2/H2), applied voltage, frequency, electrode gap, and the flow distribution by which the gas is fed in. Optical emission spectroscopy (OES) was used to identify vibrationally and other excited species generated by the microplasma and confirms the catalyst is in symbiosis with the radicals.

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Mechanochemistry in Organic Synthesis: An Italian Journey through Innovations

Basoccu,

De Luca,

Porcheddu

2024

Eur J Org Chem

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Mechanochemistry, as an enabling technology, harnesses mechanical force to drive chemical reactions, presenting compelling advantages in organic synthesis within the principles of green chemistry. This review explores how its unique advantages and alignment with sustainable practices have been widely developed in different scientific fields in Italy. As a transformative strategy for organic synthesis, mechanochemistry has been portrayed in this review as a valuable synthetic alternative due to the various advantages, such as solvent reduction and new reaction pathways, that its use brings. Nonetheless, the improvements brought about by its use have also been crucial in other fields of chemistry described by Italian scientists. In this whole context, Italian researchers have analysed both already optimised processes and new feasible pathways, paving the way for new avenues previously hampered by all the limitations that belong to in‐solution chemistry.

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Ammonia Synthesis by Mechanochemistry

Cited by 3 publications

References 42 publications

Mechanically accelerated catalytic hydrogenation: correlating physical state, reaction rate, and interface area

Mechanically accelerated catalytic hydrogenation: correlating physical state, reaction rate, and interface area

Catalytic Ammonia Formation in a Microreaction Chamber with Electrically Intensified Arc Plasma

Mechanochemistry in Organic Synthesis: An Italian Journey through Innovations

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