Articles with "precious metal" as a keyword



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A non‐precious metal ascorbate fuel cell

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Published in 2021 at "International Journal of Energy Research"

DOI: 10.1002/er.6565

Abstract: The requirement of expensive precious metal catalysts as electrode materials in fuel cells remains a major obstacle to commercialization. In this work, two ascorbate fuel cells are fabricated without precious metal catalysts and are operated… read more here.

Keywords: ascorbate; fuel cell; ascorbate fuel; precious metal ... See more keywords
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Precious Metal Doped Ni–Mg/Ceria–Zirconia Catalysts for Methane Conversion to Syngas by Low Temperature Bi-reforming

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Published in 2018 at "Catalysis Letters"

DOI: 10.1007/s10562-018-2310-y

Abstract: Low temperature (450–600 °C) bi-reforming of methane was studied over platinum (0.16 wt%) or palladium (0.13 wt%) along with nickel (1.4 wt%) and magnesium (1.0 wt%) immobilized onto a ceria–zirconia support (termed 0.16Pt and 0.13Pd). Bi-reforming studies using a feed… read more here.

Keywords: low temperature; temperature; ceria zirconia; precious metal ... See more keywords
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Extraction of Associated Precious Metal from Building Industry Raw Material that is Difficult to Process

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Published in 2018 at "Refractories and Industrial Ceramics"

DOI: 10.1007/s11148-018-0232-2

Abstract: Efficient production processes are studied for extraction of associated valuable components from ore raw material by combined physicochemical methods for enrichment with chemical technology methods. It is established by experiment that with heating by an… read more here.

Keywords: raw material; difficult process; precious metal; material difficult ... See more keywords
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Single-site Pt/La-Al2O3 stabilized by barium as an active and stable catalyst in purifying CO and C3H6 emissions

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Published in 2019 at "Applied Catalysis B: Environmental"

DOI: 10.1016/j.apcatb.2018.11.034

Abstract: Abstract High-temperature operations present a substantial challenge for developing industrial-capable precious metal catalysts (e.g. Pt/alumina), where the scarce metal atoms easily become wasted as sintered nanoparticles. Using fully dispersed precious metal atoms to deliver the… read more here.

Keywords: precious metal; metal; barium; alumina support ... See more keywords
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Tantalum Carbide Doped by Fluorine as Non-precious Metal Anodic Electrocatalyst Superior to Pt/C for Glycerol-Oxidation

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Published in 2017 at "Electrochimica Acta"

DOI: 10.1016/j.electacta.2017.01.033

Abstract: Abstract Fluorine (F) doped and partially oxidized tantalum carbide supported on graphitized carbon (TaCxFyOz/gC) as anodic non-precious metal electrocatalyst for glycerol oxidation reaction (GOR) has been successfully synthesized by a novel anion exchanged methodology. The… read more here.

Keywords: precious metal; tantalum carbide; glycerol oxidation; non precious ... See more keywords
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Heterogeneous atoms-doped titanium carbide as a precious metal-free electrocatalyst for oxygen reduction reaction

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Published in 2019 at "Electrochimica Acta"

DOI: 10.1016/j.electacta.2018.10.169

Abstract: Abstract Developing precious metal-free electrocatalysts with both high and stable oxygen reduction reaction (ORR) electrochemical activity is still the key challenge in the wide application of clean energy, e.g. fuel cells or metal air batteries.… read more here.

Keywords: oxygen reduction; precious metal; metal; heterogeneous atoms ... See more keywords
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Supply and demand driven oil price changes and their non-linear impact on precious metal returns: A Markov regime switching approach

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Published in 2018 at "Energy Economics"

DOI: 10.1016/j.eneco.2018.05.024

Abstract: This paper examines the nonlinear effect of oil price shocks on precious metal returns using Markov regime switching regression. We use Ready's (2018) approach to decompose oil price changes into supply, demand, and risk driven… read more here.

Keywords: oil price; precious metal; metal returns; supply demand ... See more keywords
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Enhancing hydrogen production from steam electrolysis in molten hydroxides via selection of non-precious metal electrodes

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Published in 2020 at "International Journal of Hydrogen Energy"

DOI: 10.1016/j.ijhydene.2020.07.183

Abstract: Abstract There are still gaps in the field of reference electrode that is needed to assist electrolysis in high temperature electrolytes (e.g. molten hydroxides) for H2 gas production. This research aims to fill the gaps… read more here.

Keywords: production; non precious; hydrogen; precious metal ... See more keywords
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Biomass-derived precious metal-free porous carbon: Ca-N,P-doped carbon materials and its electrocatalytic properties

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Published in 2021 at "Journal of Alloys and Compounds"

DOI: 10.1016/j.jallcom.2021.160726

Abstract: Abstract The search for non-noble metals catalysts drive from biomass materials for oxygen reduction reactions (ORR) is highly desirable but challenging. Here, we have designed and synthesized three-dimensional hierarchical porous Ca-modified nitrogen and phosphorus co-doped… read more here.

Keywords: doped carbon; oxygen reduction; precious metal; metal ... See more keywords
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Recent progress of precious-metal-free electrocatalysts for efficient water oxidation in acidic media

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Published in 2020 at "Journal of Energy Chemistry"

DOI: 10.1016/j.jechem.2020.03.079

Abstract: Abstract The realization of efficient oxygen evolution reaction (OER) is critical to the development of multiple sustainable energy conversion and storage technologies, especially hydrogen production via water electrolysis. To achieve the massive application of hydrogen… read more here.

Keywords: acidic media; free electrocatalysts; precious metal; water ... See more keywords
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Portfolio management and dependencies among precious metal markets: Evidence from a Copula quantile-on-quantile approach

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Published in 2019 at "Resources Policy"

DOI: 10.1016/j.resourpol.2019.101529

Abstract: This study examines the dependence structure among four major precious metal markets: gold, palladium, platinum, and silver. Using the novel Copula Quantile-on-Quantile Regression (C-QQR) approach of Sim (2016), we show that precious metals share a… read more here.

Keywords: portfolio; precious metal; metal markets; metal ... See more keywords