Results 31 to 40 of about 14,710 (250)

Ionic Precursors Transformed Into Vinyl Acetate Synthesis Catalyst via Reaction‐Driven Restructuring

Advanced Functional Materials, EarlyView.
This work demonstrates that a simple physical mixture of Pd and Au ionic precursors, KOAc promoter, and SiO2 support can transform into a highly active vinyl acetate synthesis catalyst through reaction‐driven restructuring. The results highlight reaction‐induced restructuring as an innovative and sustainable catalyst design strategy.
Byeong Jun Cha, Welman C. Elias, Hunter P. Jacobs, Kimberly N. Heck, Saghar Rezaie, Sadegh Yazdi, Kiheon Hong, Justin J. Dodson, Laiyuan Chen, Sean G. Mueller, Steven R. Alexander, Michael S. Wong   +11 more
wiley   +1 more source

Laboratory investigations on the leaching of precious and rare metals [PDF]

E3S Web of Conferences
Laboratory tests were carried out to assess whether depleted uranium-bearing ores from the Sugrali deposit can be used for secondary in-situ leaching of precious and rare metals.
Yuldoshev Alisher
doaj   +1 more source

Mesoscopic Process Simulation of In Situ Leaching of Ionic Rare Earth Based on NMRI Technology

Adsorption Science & Technology, 2023
In order to simulate and calculate the leaching process of ionic rare earths more realistically, a digital model of ionic rare earths with real size, shape, seepage channel, and pore ratio and distribution at the mesoscopic scale was constructed based on
Fuyu Wu, Dan Wang, Yunzhang Rao, Meidao Zhang, Liang Shi, Min Han, Wei Xu   +6 more
doaj   +1 more source

Polymer Substrates for Flexible Sensors: Advances and Contributions to Smart Agriculture

Advanced Functional Materials, EarlyView.
This review comprehensively summarizes recent advances in polymer‐based flexible sensors for smart agriculture, focusing on polymer substrate design, interface engineering, and applications in soil, plant, animal, aquaculture, and post‐harvest monitoring.
Yihui Li, Zhangzheng Xiao, Zheng Yan, Adnan Raza Altaf, Qun Song, Dingding Yao, Afshan Sohail, Yixin Wang, Wenxiu Ma, Shanjun Li, Yaohui Chen, Peiwen Liu, Kai Zhang   +12 more
wiley   +1 more source

Tough and Skin‐Free Porous Polyelectrolyte Complex Hydrogels via Salt‐Induced Aqueous Phase Separation

Advanced Functional Materials, EarlyView.
Controlling counterion exchange rate during aqueous phase separation enables the formation of skin‐free, homogeneously porous polyelectrolyte complex hydrogels by suppressing kinetically trapped skin layers and macrovoids. The resulting hydrogel networks exhibit exceptional toughness (∼15 MJ·m−3) and enable 3D (bio)printing and post‐functionalization ...
Adrivit Mukherjee, Vishakha Vishakha, Julien Es Sayed, Hugo Brummer, Peter Dijkstra, Ajay Giri Prakash Kottapalli, Ranjita K. Bose, Marleen Kamperman   +7 more
wiley   +1 more source

Study on Calculation Method for Ore-controlling Volume of Flow Field for In-situ Leaching of Uranium

Yuanzineng kexue jishu
The effective hydrodynamic field and ore-controlling volume of the flow field for in-situ leaching of uranium are key parameters proposed in recent years to characterize the seepage and leaching features of underground water systems in-situ leaching of ...
LI Qinci1, 2, QUE Weimin1, 2, XIE Tingting1, 2, LI Zhaokun1, 2, WANG Sichen1, 2, ZOU Yuhan1, ZHAO Longhao1, 2, DU Zhiming1, 2, YANG Yihan3, ZHANG Chong1, 2
doaj   +1 more source

Functionalizing Micro‐to‐Mesoscopic Electrode Architectures for Regulating Electron Transfer Behaviors in Electrocatalysis

Advanced Functional Materials, EarlyView.
A systematic review is conducted to assess the influence of electrode architecture across micro‐ to mesoscopic length scales on electron‐transfer pathways in electrocatalysis. We discuss the structure‐activity relationships in electrocatalytic applications, including resource recovery and environmental remediation, and provide cost‐effective, efficient
Manshu Zhao, Jiaojiao Zhang, Shideng Yuan, Xinmeng Yu, Keming Wan, Xiaoguang Duan, Zhining Wang   +6 more
wiley   +1 more source

Riverine Ecosystem Contamination and Ecological Risk Assessment Following Cyanide Leakage from In Situ Rare Earth Mining in Northern Laos

Earth
In situ leaching is increasingly used for rare earth element (REE) extraction because of its operational efficiency; however, acidic and chemically reactive leaching solutions may generate substantial environmental risks in riverine systems.
Somchith Phetmany, Bounmy Keohavong, Bounlue Douangdy, Xaythavone Bounyasone, Xuewei Hu   +4 more
doaj   +1 more source

Investigation of the Impact of Leaching Agent Concentration and pH on the Stability of Agglomeration of Ion-Absorbed Rare Earth Deposits

Geofluids, 2023
Ion-absorbed rare earth deposits react with the leaching agent during the in situ leaching process through ion exchange and hydration, which change the stability of ore agglomerates and even result in mining slopes or landslides.
Zhongquan Gao, Yunzhang Rao, Liang Shi, Xiaoming Zhang, Run Xiang   +4 more
doaj   +1 more source

Identification of Water-rock Reaction Mechanism for Uranium In-situ Recovery Desalination Process Based on Inversion Modelling

Yuanzineng kexue jishu, 2023
For the in-situ recovery (ISR) mining of sandstone-type uranium deposits with the high total dissolved solids (TDS), the desalination process of injecting fresh water was required.
WANG Bing1,2;LUO Yue1,3,*;QIAN Jiazhong2;GAO Bai1;LIU Jinhui1,3;LI Xun1;ZHANG Yanhong1,3;CHEN Qianqian1;LI Liyao3
doaj   +1 more source