Results 21 to 30 of about 1,465,196 (394)

Nanostructure of nickel-promoted indium oxide catalysts drives selectivity in CO2 hydrogenation

open access: yesNature Communications, 2021
Metal promotion in heterogeneous catalysis requires nanoscale-precision architectures to attain maximized and durable benefits. Herein, we unravel the complex interplay between nanostructure and product selectivity of nickel-promoted In 2 O 3 in CO 2 ...
M. Frei   +9 more
semanticscholar   +1 more source

How much radioactive nickel does ASASSN-15lh require? [PDF]

open access: yes, 2016
The discovery of the most luminous supernova ASASSN-15lh triggered a shock-wave in the supernova community. The three possible mechanisms proposed for the majority of other superluminous supernovae do not produce a realistic physical model for this ...
Blinnikov, Sergey   +3 more
core   +2 more sources

Overall electrochemical splitting of water at the heterogeneous interface of nickel and iron oxide

open access: yesNature Communications, 2019
Efficient generation of hydrogen from water-splitting is an underpinning chemistry to realize the hydrogen economy. Low cost, transition metals such as nickel and iron-based oxides/hydroxides have been regarded as promising catalysts for the oxygen ...
Bryan H. R. Suryanto   +4 more
semanticscholar   +1 more source

Recovery of Rare Metals from Superalloy Scraps by an Ultrasonic Leaching Method with a Two-Stage Separation Process

open access: yesSeparations, 2022
Superalloy scraps are deemed as potential unconventional sources of rare metals. In this study, an ultrasonic leaching method with a two-stage separation process was proposed.
Long Wang   +9 more
doaj   +1 more source

Atomic-level insight into super-efficient electrocatalytic oxygen evolution on iron and vanadium co-doped nickel (oxy)hydroxide

open access: yesNature Communications, 2018
It is of great importance to understand the origin of high oxygen-evolving activity of state-of-the-art multimetal oxides/(oxy)hydroxides at atomic level.
Jian Jiang   +10 more
semanticscholar   +1 more source

Indicadores económicos para evaluar la sostenibilidad de la empresa extractiva Materiales de Construcción a través del Método Multicriterio

open access: yesCiencia & Futuro, 2022
Se evaluó el desempeño de las variables e indicadores económicos en la empresa extractiva Materiales de la Construcción. La investigación se desarrolló a través de 7 etapas metodológicas que posibilitaron evaluar los principales indicadores de la ...
Dailén González-Martín   +2 more
doaj  

Analysis of Support Design in Weak Rock Drift Using a Systematic Approach

open access: yesAdvances in Civil Engineering, 2020
The aim of this study is to develop a systematic approach for support design of weak rock drift based on empirical, analytical, and numerical method, which is employed to estimate weak rock support demand and design support system.
Xingdong Zhao   +4 more
doaj   +1 more source

Anchoring zero valence single atoms of nickel and iron on graphdiyne for hydrogen evolution

open access: yesNature Communications, 2018
Electrocatalysis by atomic catalysts is a major focus of chemical and energy conversion effort. Although transition-metal-based bulk electrocatalysts for electrochemical application on energy conversion processes have been reported frequently, anchoring ...
Yurui Xue   +8 more
semanticscholar   +1 more source

Ternary nickel–tungsten–copper alloy rivals platinum for catalyzing alkaline hydrogen oxidation

open access: yesNature Communications, 2021
Operating fuel cells in alkaline environments permits the use of platinum-group-metal-free (PGM-free) catalysts and inexpensive bipolar plates, leading to significant cost reduction.
Shuai Qin   +11 more
semanticscholar   +1 more source

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