Results 51 to 60 of about 663,607 (251)

Insight into fuel injection aging effect on deactivation of PtPd bimetallic supported diesel oxidation catalyst: From engine performance evaluation of monolithic catalysts to microscopic characterization of active species

Fuel Processing Technology
In this study, a comparative experimental study was carried out on DOC catalysts with different aging times (0 h, 40 h, 80 h) by using engine. Emission data were collected through engine testing, and the catalytic behavior of DOC catalysts was analyzed ...
Dezhi Ren, Xin Dai, Jingfang Zhu, Fei Yu, Shunhong Li, Chaoqiang Wang, Jie Yan, Shiying Chang, Dongxia Yang, Yunkun Zhao   +9 more
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

commodity futures on precious metals

, 2011
The aim of the thesis is to clarify the importance of diversifying investment portfolios with the help of precious metals at the present time and to analyze the fluctuation of precious metals market in terms of demand, supply and price developments.
Schwartz, Peter
core   +2 more sources

Precious Metals And Retirement Portfolio Survival Rates [PDF]

, 2010
Recent gains in the value of gold bullion in the presence of declines in the stock and corporate bond markets suggest that retired investors may benefit from holdings of precious metals.  Because of the comparative liquidity and economy of holding ...
Hubbard, Carl M., Walz, Daniel T.
core   +1 more source

Designing Vanadium‐Based Oxide Electrocatalysts for Water Splitting: Experimental and Mechanistic Insights with Machine Learning

Advanced Functional Materials, EarlyView.
This review establishes structure‐property‐mechanism relationships across six modification strategies for V‐based oxide water‐splitting electrocatalysts: lattice engineering, heteroatom doping, interface engineering, carbon‐based hybridization, morphology engineering, and surface reconstruction and pre‐catalyst design, where dissolution is reframed as ...
Youness El Issmaeli, Amina Lahrichi, Hoje Chun, Rafael Gómez‐Bombarelli, Bruno G. Pollet   +4 more
wiley   +1 more source

Results of geological exploration for diamonds, base and precious metals (DBPM) under the "declaration principle" of the licensing, and specifics of implementation of the principle to primary gold deposits as an example

Руды и металлы
The article presents results of the work for diamonds, base and precious metals, fulfilled in the Russian Federation under the "declaration principle" licenses since the mechanism came into effect.
Alekseev Ya. V., Popov I. V., Kulikov D. A.   +2 more
doaj   +1 more source

Microfluidic solvent extraction of platinum and palladium from a chloride leach solution using Alamine 336 [PDF]

, 2013
Microfluidic solvent extraction (μSX) of platinum and palladium from chloride leach solution using Alamine 336 had been conducted. The leach solution was produced by leaching of spent automotive catalysts.
Nikoloski, A.N., Wang, M-W, Yin, C-Y
core  

Decoupling the Size and Loading Effects in Silver Nanoparticles for Efficient Paired Carbon Dioxide and Formaldehyde Electrolysis

Advanced Functional Materials, EarlyView.
We investigate size‐dependent CO selectivity on Ag nanoparticles, where optimized Ag loading achieves nearly 100% Faradaic Efficiency for CO at −100 mA·cm−2. In situ SERS and XPS reveal the crucial role of optimized loading in catalytic performance. The Ag/C catalyst further exhibits bifunctional activity, enabling efficient electrolysis of CO2 and ...
Venkata S. R. K. Tandava, Clara Große, Debabrata Bagchi, Zhenye Zhu, Suptish Ghosh, J. Niklas Hausmann, Carsten Walter, Rosario Suarez Anzorena, Catalina Elena Jimenez, Yasmin Lucero Cobos‐Becerra, Jack C. Q. Fletcher, Tobias Sontheimer, Michael Schwarze, Holger Dau, Matthias Driess, Marcus Bär, Prashanth W. Menezes   +16 more
wiley   +1 more source

Mineral composition and geochemical features of choleoliths of Yakutia residents

Известия Томского политехнического университета: Инжиниринг георесурсов
Relevance. In recent years, the issue of sustainable and comfortable environmental conditions has been becoming increasingly relevant. Unfavourable environmental impacts lead to disruptions in the intake of chemical elements into the body, which, in its
Yana B. Legostaeva, Tatiana I. Vasileva, Olesya V. Shadrinova   +2 more
doaj   +1 more source

Aging hardening characteristic and electrical conductivity of Cu-Cr-Zr-Mo in situ composite

Science and Engineering of Composite Materials, 2016
Cu-0.85Cr-0.5Zr-0.5Mo in situ composite was prepared by continuous casting, cold drawing, and aging treatment. By means of the analysis of microhardness, electrical conductivity, and transmission electron microscopy, the aging characteristics and ...
Wang Song, Zheng Tingting, Xie Ming, Chen Yongtai, Zhang Jiming   +4 more
doaj   +1 more source