نتایج جستجو برای: mechanochemical activation

تعداد نتایج: 429609  

Journal: :Angewandte Chemie 2022

Carbon hydrogasification is the slowest reaction among all carbon-involved small-molecule transformations. Here, we demonstrate a mechanochemical method that results in both faster rate and new synthesis route. The was dramatically enhanced by up to 4 orders of magnitude compared traditional thermal method. Simultaneously, exhibited very high selectivity (99.8 % CH4, versus 80 under conditions)...

Journal: :Zapiski Gornogo instituta 2022

Based on a package of modern analysis methods, the influence various acids and energy effects morphology, elemental composition, structural chemical transformations mineral surface, efficiency eudialyte concentrate leaching was studied. The mechanism optimal conditions specific features destruction rock minerals extraction zirconium REE under acids, powerful nanosecond pulses, dielectric barrie...

In this paper the feasibility of NbAl3/Al2O3 nanocomposite formation through mechanochemical reaction between Al and Nb2O5 and the effect of mechanical activation on the kinetic and reaction mechanism were investigated. Structural and phase evolution during mechanical alloying were studied by employing transmission electron microscopy (TEM)...

Journal: :Microporous and Mesoporous Materials 2022

Mechanochemical activation and steam-assisted interzeolite transformation offer a simple, fast cost-efficient synthesis route to gmelinite (GME) zeolite. The use of faujasite (FAU) as the parent zeolite precursor facilitates reaction results in high yields high-quality GME less than 20 h under optimized conditions. accessible porosity amounts stacking-faults were determined by N2 physisorption ...

Journal: :E3S web of conferences 2021

To increase the specific surface area of binder and accelerate strength gain fast-hardening concrete mixtures, a model has been created for calculating aeroactivators as part mobile complexes based on new equipment cement activation, sand enrichment, local materials, production waste. The proposed establishes dependence rate destruction dusty shell particles mechanical impact beaters materials`...

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