scholarly journals Selective, high-temperature permeation of nitrogen oxides using a supported molten salt membrane

2015 ◽  
Vol 8 (4) ◽  
pp. 1220-1223 ◽  
Author(s):  
G. Zhang ◽  
E. I. Papaioannou ◽  
I. S. Metcalfe
Keyword(s):  
Carbon Dioxide ◽  
High Temperature ◽  
Nitrogen Oxides ◽  
Nitrogen Oxide ◽  
Molten Salt ◽  
Ceramic Membranes

Nitrate/ceramic membranes were designed for selective nitrogen oxide permeation. These membranes exhibited selective permeation of nitrogen oxides over carbon dioxide and could be employed in e.g. sensing technologies.

scholarly journals Recent Advances in Molten-Carbonate Membranes for Carbon Dioxide Separation: Focus on Material Selection, Geometry, and Surface Modification

2021 ◽  
Vol 2021 ◽  
pp. 1-22
Author(s):  
Shabana Afzal ◽  
Atif Khan
Keyword(s):  
Carbon Dioxide ◽  
Molten Salt ◽  
Material Selection ◽  
Ceramic Membranes ◽  
Co2 Separation ◽  
Molten Carbonate ◽  
Carbon Dioxide Transport ◽  
Carbon Dioxide Separation ◽  
Support Materials ◽  
Separation Membranes

Membranes for carbon dioxide permeation have been recognized as potential candidates for CO2 separation technology, particularly in the energy sector. Supported molten-salt membranes provide ionic routes to facilitate carbon dioxide transport across the membrane, permit the use of membrane at higher temperature, and offer selectivity based on ionic affinity of targeted compound. In this review, molten-carbonate ceramic membranes have been evaluated for CO2 separation. Various research studies regarding mechanisms of permeation, properties of molten salt, significance of material selection, geometry of support materials, and surface modifications have been assessed with reference to membrane stabilities and operational flux rates. In addition, the outcomes of permeation experiments, stability tests, selection of the compatible materials, and the role of interfacial reactions for membrane degradation have also been discussed. At the end, major challenges and possible solutions are highlighted along with future recommendations for fabricating efficient carbon dioxide separation membranes.

The Analysis about Harmful Emissions of Micro Combustor Based on Porous Medium

2013 ◽  
Vol 838-841 ◽  
pp. 2481-2487
Author(s):  
Bin Xu ◽  
Yi Cheng ◽  
Jian Wu
Keyword(s):  
Porous Medium ◽  
High Temperature ◽  
Nitrogen Oxides ◽  
Nitrogen Oxide ◽  
Mixed Gas ◽  
Micro Scale ◽  
Harmful Emissions ◽  
Hc Emissions ◽  
Micro Combustor ◽  
Products Of Incomplete Combustion

According to the changes of the mixed gas flux ,porosity and burner structure,we measured the contents of CO, HC and Nitrogen Oxides in the harmful emissions of the methane burned in the micro combustor.In the micro scale, because the structure size of the burner is small, the combustion space and time is limited, CO and HC emissions are the products of incomplete combustion, nitrogen oxide are the products in local high temperature and oxygen enriched conditions.

Preparation and Oxygen Permeability of ReBaCo2O5+δ (Re = Pr, Nd, Y) Ceramic Membranes

2012 ◽  
Vol 560-561 ◽  
pp. 959-964 ◽  
Author(s):  
Jong Pyo Kim ◽  
Dae Woong Pyo ◽  
Edoardo Magnone ◽  
Jung Hoon Park
Keyword(s):  
Carbon Dioxide ◽  
High Temperature ◽  
Solid State ◽  
Oxygen Permeability ◽  
Ceramic Membranes ◽  
Solid State Reaction Method ◽  
Oxygen Permeation ◽  
Permeation Flux ◽  
Reaction Method ◽  
Oxygen Permeation Flux

ReBaCo2O5+δ (Re=Pr, Nd, Y) oxides were synthesized by solid state reaction method. The oxygen permeation flux of ReBaCo2O5+δ (Re=Pr, Nd, Y) membranes increased with temperature and oxygen partial pressure and ranked as follow: PrBaCo2O5+δ > NdBaCo2O5+δ > YBaCo2O5+δ. The oxygen permeation response of PrBaCo2O5+δ membrane was fairly stable and no detectable degradation is observed at high temperature under carbon dioxide conditions (CO2 = 500 ppm).

scholarly journals Controlling molten carbonate distribution in dual-phase molten salt-ceramic membranes to increase carbon dioxide permeation rates

2021 ◽  
Vol 617 ◽  
pp. 118640
Author(s):  
Maria Kazakli ◽  
Greg A. Mutch ◽  
Georgios Triantafyllou ◽  
Ana Gouveia Gil ◽  
Tao Li ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Molten Salt ◽  
Ceramic Membranes ◽  
Dual Phase ◽  
Molten Carbonate

scholarly journals Alternative Exhaust Emission Factors from Vehicles in On-Road Driving Tests

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3487
Author(s):  
Wojciech Gis ◽  
Maciej Gis ◽  
Jacek Pielecha ◽  
Kinga Skobiej
Keyword(s):  
Carbon Dioxide ◽  
Nitrogen Oxides ◽  
Particle Number ◽  
Exhaust Emission ◽  
The European Union ◽  
Environmental Aspects ◽  
Vehicle Category ◽  
Urban Rural ◽  
European Union Legislation ◽  
Do So

On-road driving tests are performed to determine the emission of harmful exhaust compounds from vehicles. These primarily include carbon dioxide, nitrogen oxides, and particle number. However, there is a lack of indicators that combine the first three substances that are the most important in assessing the environmental aspects of vehicles. The purpose of this article is to indicate the possibility of assessing emissions in real driving conditions from light-duty and heavy-duty vehicles of different categories. In order to do so, a portable emissions measurement system (PEMS) and an instrument for measuring the particle number were used. The tests were carried out on routes designed to comply with the requirements and regulations laid down in the European Union legislation. On-road emissions of carbon dioxide, nitrogen oxides and particle number have been determined. Factors have been determined as the multiplication of these compounds for each vehicle category in three phases of the test: urban, rural, and motorway. A new way of assessing emissions from vehicles using new factors has been proposed.

A trap for the removal of nitrogen oxides from carbon-11 carbon dioxide

1989 ◽  
Vol 40 (9) ◽  
pp. 765-768 ◽  
Author(s):  
Timothy J. Tewson ◽  
William Banks ◽  
Mark Franceschini ◽  
Joan Hoffpauir
Keyword(s):  
Carbon Dioxide ◽  
Nitrogen Oxides
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