Results 21 to 30 of about 69,795 (304)

Preparation of controlled porosity carbon aerogels for energy storage in rechargeable lithium oxygen batteries [PDF]

open access: yes, 2009
Porous carbon aerogels are prepared by polycondensation of resorcinol and formaldehyde catalyzed by sodium carbonate followed by carbonization of the resultant aerogels in an inert atmosphere. Pore structure of carbon aerogels is adjusted by changing the
EPSRC (Funder)   +2 more
core   +1 more source

Carbonation Resistance of Reinforced Concrete under Bending Load

open access: yesFracture and Structural Integrity, 2019
Fly ash has been used more and more often to take the place of cement as the admixture of concrete in the construction of concrete buildings. However, with the increase of the carbon dioxide (CO2) concentration in the atmosphere, carbonization damage has
Yan Liu   +3 more
doaj   +1 more source

Microwave-assisted hydrothermal synthesis of carbon monolith via a soft-template method using resorcinol and formaldehyde as carbon precursor and pluronic F127 as template [PDF]

open access: yes, 2014
A new microwave-assisted hydrothermal synthesis of carbon monolith is reported in this work. The process uses microwave heating at 100 °C under acidic condition by employing a triblock copolymer F127 as the template, and resorcinol–formaldehyde as the ...
Elaigwu, Sunday E.   +3 more
core   +1 more source

Lower limit of thermal maturity for the carbonization of organic matter in marine shale and its exploration risk

open access: yesPetroleum Exploration and Development, 2018
: Based on the drilling data of the Silurian Longmaxi Formation in the Sichuan Basin and periphery, SW China, the Ro lower limits and essential features of the carbonization of organic matter in over-high maturity marine shale were examined using laser ...
Yuman WANG   +10 more
doaj   +1 more source

Ultrahigh Surface Area Three-Dimensional Porous Graphitic Carbon from Conjugated Polymeric Molecular Framework [PDF]

open access: yes, 2015
Porous graphitic carbon is essential for many applications such as energy storage devices, catalysts, and sorbents. However, current graphitic carbons are limited by low conductivity, low surface area, and ineffective pore structure.
Barbieri O.   +54 more
core   +4 more sources

Colloidal bimetallic platinum–ruthenium nanoparticles in ordered mesoporous carbon films as highly active electrocatalysts for the hydrogen evolution reaction [PDF]

open access: yes, 2020
Hydrogen features a very high specific energy density and is therefore a promising candidate for clean fuel from renewable resources. Water electrolysis can convert electrical energy into storable and transportable hydrogen gas.
Bernsmeier, Denis   +7 more
core   +1 more source

Rapid pyrolysis of low rank coal: dynamic modeling and parameter analysis of a novel solid heat carrier in a co-current downer reactor

open access: yesCase Studies in Thermal Engineering
A novel co-current downer pyrolyzer was developed to enable high-temperature heat-carrying particles, preheated in a fluidized bed, to directly contact coal particles.
Yanchao Shang   +7 more
doaj   +1 more source

Biomass derived mesoporous carbon monoliths via an evaporation-induced self-assembly [PDF]

open access: yes, 2013
Evaporation-induced self-assembly has been applied in the synthesis of crack-free mesoporous carbon monolith with good mechanical stability using a waste plant material as carbon precursor and triblock copolymer F127 as template.
Elaigwu, Sunday E., Greenway, Gillian M.
core   +1 more source

TiO2-doped resorcinol–formaldehyde (RF) polymer and carbon gels with photocatalytic activity [PDF]

open access: yes, 2013
Resorcinol-formaldehyde (RF) polymer gels offer a relatively easy and versatile route for incorporating metals into a carbon aerogel matrix. The hybrid materials thus obtained are ideal candidates for applications involving enhanced adsorption or ...
Czakkel, Orsolya   +3 more
core   +3 more sources

Biofilter aquaponic system for nutrients removal from fresh market wastewater [PDF]

open access: yes, 2020
Aquaponics is a significant wastewater treatment system which refers to the combination of conventional aquaculture (raising aquatic organism) with hydroponics (cultivating plants in water) in a symbiotic environment.
A Endut   +42 more
core   +1 more source

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