Results 31 to 40 of about 5,411 (251)

Comprehensive Recovery of Metals in Tailings Utilization with Mechanochemical Activation

open access: yesResources, 2023
The paper analyzes the results of metal extraction from tailings of ore processing based on traditional approaches. The history of methods of secondary processing of mineral raw materials is described.
Vladimir I. Golik   +9 more
doaj   +1 more source

Thermodynamic aspect of sodium carbonate mechanical transformations under different environment [PDF]

open access: yesScience of Sintering, 2020
During mechanical activation, the energy of treated material is raised to a higher level that can lead to the chemical transformation of the activated material.
Đorđević Nataša G.   +2 more
doaj   +1 more source

Electrochemically-stimulated nanoscale mechanochemical wear of silicon

open access: yesFriction, 2023
Mechanochemical reactions at the sliding interface between a single-crystalline silicon (Si) wafer and a silica (SiO2) microsphere were studied in three environmental conditions: humid air, potassium chloride (KCl) solution, and KCl solution with an ...
Chen Xiao   +4 more
doaj   +1 more source

Aldonitrones as aldehyde surrogates in solvent free synthesis of chalcones under mechanochemical activation

open access: yesResults in Chemistry, 2021
Nitrones perform as aldehyde surrogates in the preparation of chalcones via mechanochemical activation under solvent free condition. Aldonitrones containing electron releasing and electron withdrawing substituent on the C-aryl group exhibit differential ...
Jesna Antony   +3 more
doaj   +1 more source

Combination of SHS and Mechanochemical Synthesis for Nanopowder Technologies

open access: yesKONA Powder and Particle Journal, 2014
The combination of mechanochemical activation and self-propagating high-temperature synthesis (SHS) have widened the possibilities for both methods. For metallic systems, the investigation showed that a short-term
T. Grigorieva, M. Korchagin, N. Lyakhov
doaj   +1 more source

Titania powder activation and rutile ceramics structure formation [PDF]

open access: yesScience of Sintering, 2009
Impact of mechanochemical activation (MCA) in aqueous medium with various organic additives on commercial titania powder and products made of it has been investigated by X-ray diffraction, optical microscopy and Raman spectroscopy. Agar-agar additive has
Ziganshin I.R.   +3 more
doaj   +1 more source

Ultrasound-activated mechanochemical reactions for controllable biomedical applications

open access: yesSmart Materials in Medicine
Intramolecular bonds in small organic molecules, macromolecules, and organic-inorganic hybrids are broken or formed by ultrasound-activated mechanical force that can be applied with spatial and temporal precision for contactless external control of ...
Maocheng Zuo   +7 more
doaj   +1 more source

Mechanochemical Activation for Resolving the Problems of Catalysis

open access: yesKONA Powder and Particle Journal, 2009
The role of structure-energy properties of the mechanically induced defects of the crystal structure of heterogeneous catalysts is considered here. The main concepts of the effect of mechanochemical activation on the activity and selectivity of catalysts are theoretically stated. The most promising research trends are presented.
Buyanov, Roman A.   +2 more
openaire   +3 more sources

Efficient Separation of Zn2+ and Cd2+ Ions in Solution by the Mechanochemically Activated Talc

open access: yesKuangchan zonghe liyong
Natural silicate clay minerals are widely used in the purification of heavy metal polluted wastewater and resource recovery. In this case, mechanochemical activation technology has been used to effectively improve the chemical reaction activity of ...
Chunqi LIU   +7 more
doaj   +1 more source

Preparation of phosphoric acid activated carbon from sugarcane bagasse by mechanochemical processing [PDF]

open access: yesBioResources, 2012
Activated carbon was prepared from sugarcane bagasse with phosphoric acid activation by a mechanochemical process. The effects of milling time on adsorption properties and pore structure of activated carbon were evaluated.
Cui-Xia Chen   +3 more
doaj  

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