Results 141 to 150 of about 77,524 (304)

Enhanced ammonia oxidation on BDD induced by inhibition of oxygen evolution reaction

open access: yes, 2010
Electrochemical oxidation of ammonia (NH3 and NH4+) on boron-doped diamond (BDD) electrode was studied using differential electrochemical mass-spectrometry (DEMS) and chronoamperometry.
Comninellis, Ch.   +9 more
core   +1 more source

Recent Development in Designing Electrocatalysts for Efficient and Selective Ammonia Oxidation Reaction

open access: yesAdvanced Energy & Sustainability Research
Ammonia (NH3) is a critical chemical that is among the top 10 industrial chemicals produced annually in the world. Although the majority of NH3 is currently used in fertilizer production, it has recently recognized as a promising carrier for the storage,
Yeyu Deng   +6 more
doaj   +1 more source

Reinforcing Oxygen Activation of Spinel Oxide via Mn─O Covalency Engineering for VOCs Oxidation

open access: yesAdvanced Science, EarlyView.
A MnCo spinel catalyst with weakened Mn─O covalency was synthesized via a hard‐template method. The reduced Mn─O covalency facilitates localized electron redistribution, promoting the activation of both molecular oxygen and lattice oxygen, and thereby enabling the efficient and complete oxidation of VOCs (ethyl acetate, toluene, and propane).
Gan Li   +8 more
wiley   +1 more source

Aqueous phase (catalytic) wet air oxidation of ammonia: Thermodynamic considerations

open access: yes, 2017
International audienceThe equilibrium concentrations in ammonia and ammonium ion in the liquid and gas phases could be calculated in the temperature range 25–250 °C, under typical operating conditions for the catalytic wet air oxidation of ammonia.
Ayadi, H., Descorme, C., Lousteau, C.
core   +1 more source

After-Treatment Technologies for Emissions of Low-Carbon Fuel Internal Combustion Engines: Current Status and Prospects

open access: yesEnergies
In response to increasingly stringent emission regulations, low-carbon fuels have received significant attention as sustainable energy sources for internal combustion engines.
Najunzhe Jin   +3 more
doaj   +1 more source

Ambipolar Organic–Inorganic Heterostructure Transistor Array for Integrated Visual Information Processing

open access: yesAdvanced Science, EarlyView.
We present an organic–inorganic heterostructure transistor array for neuromorphic computing, achieving 95.6% MNIST accuracy and 1.2 fJ per operation, with dynamic spatiotemporal encoding and precise vehicle direction detection under combined optical and electrical stimulation.
Wen‐Min Zhong   +13 more
wiley   +1 more source

Oxidation of Ammonia in Water by Ferrates (VI) and (IV) [PDF]

open access: yes, 1976
This study was supported in part by the Office of Water Research and Technology. U.S. Department of the Interior under Project A-031-OHIO(print) vii, 71 p. : ill. ; 28 cm.List of Tables -- List of Figures -- Summary of Major Conclusions -- Introduction
Svanks, Karlis
core  

Mechanistic Studies of Copper and Iron Catalyzed Ammonia Oxidation

open access: yes, 2021
Ph.D.Global energy demand is increasing because of industrialization and population growth. Fossil fuels (oil, natural gas, and coal) provide about 88% of the energy needed to meet current demand.
Raghibi Boroujeni, Mahdi
core  

Tailored Catalytic Microenvironments Enable Efficient Electrochemical Ammonia Production

open access: yesAdvanced Science, EarlyView.
This study shows that Co2+ substitution in inverse spinel FeFeCoO4 constructs an integrated catalytic microenvironment for efficient nitrate‐to‐ammonia reduction. Jahn–Teller distortion activates Fe sites for *H generation, while hard–soft acid–base regulated dual‐metal sites optimize proton‐coupled electron transfer and intermediate adsorption ...
Qi Zhang   +8 more
wiley   +1 more source

Avaliação de parâmetros cinéticos de uma cultura mista de microorganismos destinados à eliminação autotrófica de nitrogênio via oxidação de tiossulfato [PDF]

open access: yes, 2008
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.o principal impacto ambiental inerente da atividade industrial é a poluição dos recursos hídricos, devido ao lançamento ...
Amim, Rafael dos Santos
core  

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