Der Einfluß einer mechanischen Bearbeitung auf die thermische Zersetzung von Hydrargillit

Steinike, U.; Geißler, H.; Hennig, H.‐P.; Jancke, K.; Jedamzik, J.; Kretzschmar, U.; Bollmann, U.

doi:10.1002/zaac.19905900121

Cited by 4 publications

(3 citation statements)

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“…This mechanical activation of Al(OH) 3 during the neat pre‐grinding of solid reactants in the two‐step ettringite mechanosynthesis seems to play a significant role for the progress of the mechanochemical reaction. Some authors observed significant effects of mechanical treatment on Al(OH) 3 including the occurrence of structural defects and amorphization up to decomposition to Al 2 O 3 …”

Section: Resultsmentioning

confidence: 99%

“…Some authors observed significant effects of mechanical treatment on Al(OH) 3 including the occurrence of structural defects and amorphization up to decomposition to Al 2 O 3 . [66][67][68][69][70][71][72] A series of three-step mechanosyntheses were performed, according to procedures outlined in Figure 3. The XRD data of the intermediate mixtures produced in each step are shown in Figure 7, alongside XRD patterns for the respective final product mixture.…”

Section: Resultsmentioning

confidence: 99%

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Mechanistic Insights into a Sustainable Mechanochemical Synthesis of Ettringite

et al. 2019

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Mechanochemistry offers an environmentally benign and facile synthesis method for a variety of cement paste constituents. In addition, these methods can be used to selectively tune the properties of cement components. The mineral ettringite is an important component of cementitious materials and has additional technological potential due to its ion exchange properties. Synthesis of ettringite via mechanochemistry is an environmentally friendly alternative to conventional wet‐chemical synthesis established in industry. This contribution explores the mechanism of a two‐step mechanochemical synthesis of ettringite, which was previously found to greatly improve the reaction conversion as compared with one‐pot synthesis. The crystallinity of Al(OH) 3 was found to decrease during the first stage of this mechanochemical synthesis. This was correlated to a significant decrease in the particle size of Al(OH) 3 in this stage. No other significant changes were found for the other components, suggesting that mechanochemical activation of Al(OH) 3 is responsible for the enhanced formation of ettringite by the two‐step approach. The environmentally friendly approach developed for ettringite synthesis offers a versatile synthetic strategy, which can be applied to synthesise further cementitious materials.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Mechanistic Insights into a Sustainable Mechanochemical Synthesis of Ettringite

et al. 2019

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“…Apart from the structural properties of the solids, however, both the chemical properties of solids and those of the surroundings are of importance. (56,58) Solid-gas mechanically-induced adsorption of quartz (46) …”

Section: Discussionmentioning

confidence: 99%