scholarly journals In operando Detection of Three-Way Catalyst Aging by a Microwave-Based Method: Initial Studies

2015 ◽  
Vol 5 (3) ◽  
pp. 174-186 ◽  
Author(s):  
Gregor Beulertz ◽  
Martin Votsmeier ◽  
Ralf Moos
Keyword(s):  
In Operando ◽  
Catalyst Aging ◽  
Three Way Catalyst

Stochastic Computing via In Operando Modulation of Rectification in Molecular Tunneling Junctions

2020 ◽  
Author(s):  
Xinkai Qiu ◽  
Sylvia Rousseva ◽  
Gang Ye ◽  
Jan C. Hummelen ◽  
Ryan Chiechi
Keyword(s):  
Self Assembly ◽  
Variable Temperature ◽  
Self Assembled Monolayers ◽  
Microfluidic Channels ◽  
Proof Of Concept ◽  
Glycol Ethers ◽  
Stochastic Computing ◽  
Assembled Monolayers ◽  
In Operando ◽  
Tunneling Junctions

This paper describes the reconfiguration of molecular tunneling junctions during operation via the self-assembly of bilayers of glycol ethers. We use well-established functional groups to modulate the magnitude and direction of rectification in assembled tunneling junctions by exposing them to solutions containing different glycol ethers. Variable-temperature measurements establish that rectification occurs by a bias-dependent tunneling-hopping mechanism and that glycol ethers, beside being an unusually efficient tunneling medium, behave identically to alkanes. We fabricated memory bits from crossbar junctions prepared by injecting eutectic Ga-In into microfluidic channels. Two 8-bit registers were able to perform logical AND operations on bit strings encoded into chemical packets as microfluidic droplets that alter the composition of the crossbar junctions through self-assembly to effect memristor-like properties. This proof of concept work demonstrates the potential for fieldable molecular-electronic devices based on tunneling junctions of self-assembled monolayers and bilayers.

Preparation of CeO2-ZrO2-Al2O3 and Catalytic Performance of Palladium-Based Three-Way Catalyst

2010 ◽  
Vol 31 (4) ◽  
pp. 429-434
Author(s):  
Ming ZHAO ◽  
Hairong WANG ◽  
Shanhu CHEN ◽  
Yanling YAO ◽  
Maochu GONG ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Three Way Catalyst

scholarly journals Corrosion of ternary borosilicate glass in acidic solution studied in operando by fluid-cell Raman spectroscopy

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Christoph Lenting ◽  
Thorsten Geisler
Keyword(s):  
Raman Spectroscopy ◽  
Nuclear Waste ◽  
Numerical Models ◽  
Adsorbed Water ◽  
Corrosion Mechanism ◽  
Borosilicate Glasses ◽  
Long Term Storage ◽  
In Operando ◽  
High Level ◽  
Fluid Cell

AbstractFluid-cell Raman spectroscopy is a space and time-resolving application allowing in operando studies of dynamic processes during solution–solid interactions. A currently heavily debated example is the corrosion mechanism of borosilicate glasses, which are the favoured material for the immobilization of high-level nuclear waste. With an upgraded fluid-cell lid design made entirely from the glass sample itself, we present the polymerization of the surface alteration layer over time in an initially acidic environment, including the differentiation between pore and surface-adsorbed water within it. Our results support an interface-coupled dissolution-precipitation model, which opposes traditional ion-exchange models for the corrosion mechanism. A sound description of the corrosion mechanism is essential for reliable numerical models to predict the corrosion rate of nuclear waste glasses during long-term storage in a geological repository.

A rigorous electrochemical ammonia electrolysis protocol with in-operando quantitative analysis

2021 ◽  
Author(s):  
Yejin Yang ◽  
Jeongwon Kim ◽  
Hyoi Jo ◽  
Arim Seong ◽  
Minzae Lee ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Hydrogen Production ◽  
Hydrogen Storage ◽  
Liquid Fuel ◽  
High Capacity ◽  
In Operando

Ammonia has emerged as attractive liquid fuel for hydrogen production owing to its facile transportation, high capacity of hydrogen storage, and ecofriendly environmental products (N2 and H2). Moreover, the electrolysis...

Regulated and unregulated exhaust emissions from two three-way catalyst equipped gasoline fuelled vehicles

1996 ◽  
Vol 30 (20) ◽  
pp. 3529-3536 ◽  
Author(s):  
Roger Westerholm ◽  
Anders Christensen ◽  
Åke Rosén
Keyword(s):  
Exhaust Emissions ◽  
Three Way Catalyst
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