Tribogalvanik — ein neues Anwendungsgebiet der Tribochemie

Thiessen, Karsten Peter

doi:10.1002/zfch.19740140403

Cited by 12 publications

(2 citation statements)

References 7 publications

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“…With growing diversity of tribochemical reactions, daughter terms became commonplace to facilitate more accurately the communication of the scientific work. These words included tribocatalysis, triboelectrochemistry, tribosorption, tribodiffusion, tribocorrosion, tribotechnology, tribomechanics, tribogalvanics, and tribometallurgy, each introducing specific subfields of tribology, the science uniting tribochemistry and tribophysics (Thiessen et al, 1966;Thiessen, 1974;Heinicke, 1984;Holmberg and Erdemir, 2017). A primary aim for introducing these "tribo" terms in addition to Ostwald's term "mechanochemistry", was to separate solid-state mechanochemistry from mechanically induced processes that occur in single molecules or liquids.…”

Section: What Is In a Name?mentioning

confidence: 99%

“…These words included tribocatalysis, triboelectrochemistry, tribosorption, tribodiffusion, tribocorrosion, tribotechnology, tribomechanics, tribogalvanics, and tribometallurgy, each introducing specific subfields of tribology, the science uniting tribochemistry and tribophysics. 6,[108][109][110] A primary aims for introducing these "tribo" terms in addition to Ostwald's term "mechanochemistry", was to separate solid-state mechanochemistry from mechanically induced processes that occur in single molecules or liquids. In this way, physical phenomena induced by mechanical action in solids or at their surfaces, including phenomena like mechanical mixing and comminution, were to be denoted with a "tribo-" prefix.…”

Section: What Is In a Name?mentioning

confidence: 99%

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Tribochemistry, Mechanical Alloying, Mechanochemistry: What is in a Name?

Michalchuk

Болдырева²,

Belenguer³

et al. 2021

Front. Chem.

135

108

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Over the decades, the application of mechanical force to influence chemical reactions has been called by various names: mechanochemistry, tribochemistry, mechanical alloying, to name but a few. The evolution of these terms has largely mirrored the understanding of the field. But what is meant by these terms, why have they evolved, and does it really matter how a process is called? Which parameters should be defined to describe unambiguously the experimental conditions such that others can reproduce the results, or to allow a meaningful comparison between processes explored under different conditions? Can the information on the process be encoded in a clear, concise, and self-explanatory way? We address these questions in this Opinion contribution, which we hope will spark timely and constructive discussion across the international mechanochemical community.

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Section: What Is In a Name?mentioning

confidence: 99%

Section: What Is In a Name?mentioning

confidence: 99%

Tribochemistry, Mechanical Alloying, Mechanochemistry: What is in a Name?

Michalchuk

Болдырева²,

Belenguer³

et al. 2021

Front. Chem.

135

108

View full text Add to dashboard Cite

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Mechanochemical Methods

Kubias

Fait

Schlögl

2008

Handbook of Heterogeneous Catalysis

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Mechanocatalytic Synthesis of Ammonia: State of the Catalyst During Reaction and Deactivation Pathway

Reichle,

Kang,

Demirbas

et al. 2024

Angewandte Chemie

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Ammonia synthesis holds significant importance for both agricultural fertilizer production and emerging green energy applications. Here, we present a comprehensive characterization of a catalyst for mechanochemical ammonia synthesis, based on Cs‐promoted Fe. The study sheds light on the catalyst's dynamic evolution under reaction conditions and the origin of deactivation. Initially, elemental Cs converts to CsH, followed by partial CsOH formation due to trace oxygen impurities on the surface of the Fe metal and the equipment. Concurrently, the mechanical milling process comminutes Fe, exposing fresh metallic Fe surfaces. This comminution correlates with an induction period observed during ammonia formation. Critical to the study, degradation of active Cs promoter species (CsH and CsNH2) into inactive CsOH emerged as the primary deactivation mechanism. By increasing the Cs content from 2.2 mol% to 4.2 mol%, we achieved stable, continuous ammonia synthesis for nearly 90 hours, showcasing one of the longest‐running mechanocatalytic gas phase reactions. Studies of the temperature dependence of the reaction revealed negligible bulk temperature influence in the range of ‐10°C to 100°C, highlighting the dominance of mechanical action over bulk thermal effects. This study offers insights into the complex interplay between mechanical processing, reactive species, and deactivation mechanisms in mechanocatalytic ammonia synthesis.

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Tribogalvanik — ein neues Anwendungsgebiet der Tribochemie

Cited by 12 publications

References 7 publications

Tribochemistry, Mechanical Alloying, Mechanochemistry: What is in a Name?

Tribochemistry, Mechanical Alloying, Mechanochemistry: What is in a Name?

Mechanochemical Methods

Mechanocatalytic Synthesis of Ammonia: State of the Catalyst During Reaction and Deactivation Pathway

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