Results 71 to 80 of about 29,812 (304)

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

Advanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler, Lucía Vizcaíno‐Anaya, Ahmad Tayyebi, José Manuel Vila‐Fungueiriño, María del Carmen Giménez‐López   +4 more
wiley   +1 more source

Wet Mechanochemical Processing of Celestine using (NH4)2CO3

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2017
In this study, traditional (univariate) method of processing to the wet mechanochemical treatment were applied to obtain both SrCO3 and (NH4)2SO4 from celestite (SrSO4)-(NH4)2CO3-H2O mixtures in a planetary ball mill.
Deniz Bingöl , Salih Aydoğan, Seda Karayünlü Bozbaş   +2 more
doaj   +1 more source

Shaping Matter with Acoustic Waves: From Particles to Functional Structures

Advanced Functional Materials, EarlyView.
Acoustic‐directed assembly is reviewed as a materials‐oriented strategy for organizing particles, polymers, metals, and biological systems into functional structures. The review distinguishes reversible manipulation from permanent structure formation through medium fixation, particle fixation, and in situ material generation, highlighting routes toward
Avraham Kenigsberg, Shelly Zlotnikov, Maya Fiorentino, Yuval Elias, Ornit Nagler‐Avramovitz, Hagay Shpaisman   +5 more
wiley   +1 more source

Study on heat transfer behavior and thermal breakage characteristic of the charge in ball mills

Advances in Mechanical Engineering, 2021
Ball mill is the widely used comminution device for the size reduction of iron ore particles, yet the underlying mechanisms of heat transfer and thermal breakage inside the mills heretofore are not deeply understood.
Tongqing Li, Zixin Yin, Guiyi Wu
doaj   +1 more source

RANCANG BANGUN MESIN BALL MILL (Sistem Transmisi) [PDF]

, 2015
ABSTRAK ANNAS SYARIFUDIN “RANCANG BANGUN MESIN BALL MILL BAGIAN SISTEM TRANSMISI Tujuan dari proyek akhir ini adalah pembuatan mesin ball mill. Pembuatan alat ini berfungsi untuk menghaluskan material menjadi partikel yang lebih kecil atau dalam bentuk ...
SYARIFUDIN, ANNAS
core  

Redirecting Nano‐Silicon Agglomeration: Dual‐Carbon Design Triggers Self‐Adaptive Nanoporous Si Sponge for Enhanced Lithium Storage

Advanced Functional Materials, EarlyView.
This study addresses silicon anode degradation using an engineered nSi/Gr/C dual‐carbon matrix. By restricting SEI infiltration, the architecture redirects silicon agglomeration into a beneficial structural self‐adaptive activation. During cycling, silicon nanoparticles self‐organize into a resilient nanoporous sponge. This dynamic network accommodates
Wei Zhang, Yuxia Zhong, Wen Ren, Lei Zhang, Yexin Pan, Mitch Guijun Li, Gary J. Cheng, Ruohan Yu   +7 more
wiley   +1 more source

Realisation of energy saving potential at mining enterprises on the basis of optimal intramill filling [PDF]

E3S Web of Conferences
The authors present the development of an automated system for controlling the loading of the output mill of pebbles and scrap of the beneficiation plant of JSC Lebedinsky GOK on the basis of measurement of bearing vibration signals.
Starykh Svetlana, Minakova Irina, Derkach Natalia, Taranenko Maksim, Ermolaev Denis   +4 more
doaj   +1 more source

Molecular dynamics of comminution in ball mills [PDF]

The European Physical Journal B, 2000
We Investigate autogenous fragmentation of dry granular material in rotating cylinders using two-dimensional molecular dynamics. By evaluation of spatial force distributions achieved numerically for various rotation velocities we argue that comminution occurs mainly due to the existence of force chains.
Buchholtz, Volkhard, Freund, Jan Alfred, Pöschel, Thorsten   +2 more
openaire   +2 more sources

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Determination of the granulometric composition parameters of the grinding product in a ball mill

MATEC Web of Conferences, 2018
The article deals with the issue of the formation of the grain composition of the comminuted material inside the drum of a ball mill. The approach to the calculation of the grain composition at its transition from a larger fraction from a smaller ...
Sharapov Rashid
doaj   +1 more source