Results 11 to 20 of about 521,383 (205)

Performance Evaluation of a Chinese Lean Iron Ore as the Oxygen Carrier in Multi and Short-Time Redox Cycles

open access: yesApplied Sciences, 2018
The performance of a Chinese lean iron ore as the oxygen carrier in chemical looping combustion was investigated in a fixed bed reactor. Considering the short contact time between the fuel gas and oxygen carrier in the sub-pilot experimental setup, the ...
Xudong Wang   +5 more
doaj   +1 more source

Preliminary feasibility study using a solution of synthetic enzymes to replace the natural enzymes in polyhemoglobin-catalase-superoxide dismutase-carbonic anhydrase: effect on warm ischemic hepatocyte cell culture

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
This is a study on a simple solution of chemically prepared small chemical molecules of synthetic enzymes: catalase, superoxide dismutase, and carbonic anhydrase (CAT, SOD, and CA). We carried out a study to see if these synthetic enzymes can replace the
M. Hoq, T. M. S. Chang
doaj   +1 more source

Origin of charge density at LaAlO3-on-SrTiO3 hetero-interfaces; possibility of intrinsic doping [PDF]

open access: yes, 2007
As discovered by Ohtomo et al., a large sheet charge density with high mobility exists at the interface between SrTiO3 and LaAlO3. Based on transport, spectroscopic and oxygen-annealing experiments, we conclude that extrinsic defects in the form of ...
/Stanford U., Geballe Lab.   +15 more
core   +4 more sources

Reverse Water–Gas Shift Chemical Looping Using a Core–Shell Structured Perovskite Oxygen Carrier

open access: yesEnergies, 2020
Reverse water–gas shift chemical looping (RWGS-CL) offers a promising means of converting the greenhouse gas of CO2 to CO because of its relatively low operating temperatures and high CO selectivity without any side product.
Minbeom Lee   +5 more
doaj   +1 more source

Influence of the oxidation step on the behaviour and the performances of an oxygen carrier in fixed bed reactor [PDF]

open access: yesMaterials Research, 2013
Chemical Looping Combustion is a promising technology for clean power generation with integrated CO2 capture. In this process the oxygen required for combustion is provided by a metal oxide.
Lucia Blas   +4 more
doaj   +1 more source

Performance of ventilation air methane combustion over transition metal oxide oxygen carriers

open access: yes工程科学学报, 2017
The performance of combustion of ventilation air methane (VAM) over transition metal oxide oxygen carriers was studied through experiments with using tube reactors.
WU Ju-mao   +3 more
doaj   +1 more source

MP-PIC Simulation of Biomass Steam Gasification Using Ilmenite as an Oxygen Carrier

open access: yesAtmosphere, 2022
Biomass chemical looping gasification (BCLG) is a complex process for the conversion of biomass using an oxygen carrier, which is influenced by various operating parameters.
Timo Dymala   +6 more
doaj   +1 more source

Electrochemical studies of capacitance in cerium oxide thin films and its relationship to anionic and electronic defect densities [PDF]

open access: yes, 2009
Small polaron carrier density in epitaxial, doped CeO_2 thin films under low oxygen partial pressure was determined from electrochemically-measured capacitance after accounting for interfacial effects and shown to agree well with bulk ...
Chueh, William C., Haile, Sossina M.
core   +2 more sources

Selecting and Testing of Cement-Bonded Magnetite and Chalcopyrite as Oxygen Carrier for Chemical-Looping Combustion

open access: yesEnergies, 2022
Combining iron and copper ores can generate an oxygen carrier that has a synergic effect of high temperature resistance and high reactivity. In this work, typical cements available in the market were studied as binders to bind magnetite and chalcopyrite ...
Mengjun Li   +4 more
doaj   +1 more source

Effect of Natural Ilmenite on the Solid Biomass Conversion of Inhomogeneous Fuels in Small-Scale Bubbling Fluidized Beds

open access: yesEnergies, 2022
The application of oxygen carriers as alternative bed material in fluidized bed combustion originates from chemical lopping processes. They serve as oxygen transport agents undergoing consecutive redox cycles. Thereby, oxygen carriers can provide surplus
Tanja Schneider   +2 more
doaj   +1 more source

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