Structural evolution of TiN catalysts during mechanocatalytic ammonia synthesis

DeWitt, Jacobg A.; Phillips, Erin V.; Hebisch, Karoline L.; Tricker, Andrew W.; Sievers, Carsten

doi:10.1039/d2fd00164k

Cited by 5 publications

(4 citation statements)

References 56 publications

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“…X‐ray powder diffraction (XRD) has confirmed that the longer milled titanium becomes TiN. During the nitridation of titanium, the impact of the balls induces the formation of an amorphous structure and alters the surface morphology and porosity of the catalyst [36] . It is because the formation energy of TiN is low compared to other transition metal nitrides [37] .…”

Section: Ammonia Synthesis Via Mechanochemistrymentioning

confidence: 99%

“…During the nitridation of titanium, the impact of the balls induces the formation of an amorphous structure and alters the surface morphology and porosity of the catalyst. [36] It is because the formation energy of TiN is low compared to other transition metal nitrides. [37] Therefore, nitrogen easily binds to the surface of titanium.…”

Section: Ammonia Synthesis With a New Approachmentioning

confidence: 99%

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Mechanochemical Ammonia Synthesis: Old is New Again

2023

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Hydrogen is a promising clean energy source, an alternative to fossil fuels, and can potentially play a crucial role in reducing carbon emissions. The transportation and storage of hydrogen are the biggest hurdles to realizing a hydrogen economy. Ammonia is considered to be one of the most promising hydrogen carriers, because of its high hydrogen content and easy liquefaction in mild conditions. To date, ammonia is mostly produced by the ‘thermocatalytic’ Haber‐Bosch process, which requires high temperature and pressure. As a result, it can only produce ammonia in ‘centralized’ manufacturing systems. Mechanochemistry, a newly emerging method for efficient ammonia synthesis, offers potential advantages over the Haber‐Bosch process. Mechanochemical ammonia synthesis under near ambient conditions can be connected with ‘localized’ sustainable energy systems. In this perspective, the state‐of‐the‐art mechanochemical ammonia synthesis processes will be introduced. Challenges and opportunities are also discussed in relation to its role in a hydrogen economy.

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Section: Ammonia Synthesis Via Mechanochemistrymentioning

confidence: 99%

Section: Ammonia Synthesis With a New Approachmentioning

confidence: 99%

Mechanochemical Ammonia Synthesis: Old is New Again

2023

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“…30 The surface chemistry and unique electronic structure of TiN make it an intriguing material for catalytic reactions, including ammonia synthesis, nitrogen fixation, and oxygen reduction. [31][32][33] Its potential as a replacement for expensive metal catalysts has sparked interest in developing TiN-based catalysts for sustainable and costeffective industrial processes. 34 The synthesis of TMNs can be achieved through a variety of methods, including chemical vapor deposition, reactive sputtering, and arc melting.…”

Section: Introductionmentioning

confidence: 99%

Titanium nitride (TiN) as a promising alternative to plasmonic metals: a comprehensive review of synthesis and applications

Mahajan,

Dhonde,

Sahu

et al. 2024

Mater. Adv.

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“…In fact, gas-phase ball mill reactions have been well documented in the literature and provide the key advantage of strong solid-gas interactions under ambient pressures and minimal solvent loads. [23][24][25][26] Furthermore, under ambient pressure gas flow conditions, the dangers of elemental hydrogen gas can be safely mitigated.…”

Section: Introductionmentioning

confidence: 99%