Results 51 to 60 of about 968,303 (311)

Electrochemical synthesis of FeNx doped carbon quantum dots for sensitive detection of Cu2+ ion

open access: yesGreen Energy & Environment, 2023
A novel strategy was developed to fabricate FeNx-doped carbon quantum dots (Fe-N-CQDs) to detect Cu2+ ions selectively as a fluorescence probe. The Fe-N-CQDs were synthesized by an efficient electrolysis of a carbon cloth electrode, which was coated with
Siyuan Sun   +7 more
doaj   +1 more source

Kinetics Oxidation of Heavy Oil. 2. Application of Genetic Algorithm for Evaluation of Kinetic Parameters [PDF]

open access: yes, 2015
In-situ combustion (ISC) is the process of injecting air into oil reservoirs to oxidize part of the crude-oil and has been utilized for both light and heavy oil.
Castanier, Louis M.   +5 more
core   +3 more sources

Recovery of Heavy Oil from Heavy Oil Sorbed Exfoliated Graphite.

open access: yesNIPPON KAGAKU KAISHI, 2000
膨張黒鉛は,大きな重油収着能を示し,自身重量の80倍程度のA重油あるいは原油を収着した膨張黒鉛から,圧搾法で収着した重油のおよそ80%を,また吸引濾過法でも収着した重油の50-70%を回収することを見いだした。しかしながら,吸引濾過法による回収では,粘性の高いB重油およびC重油では,回収がほぼ不可能であった。この吸引濾過法では,膨張黒鉛特有のかさ高さを壊すことはなく,再収着に使用できた。しかしながら,回収を繰り返すことにより,収着量,回収量は減少していった。一方,回収された重油ともとの原油との間には,炭化水素組成分子量および水分含有量に差は認められず,回収された重油は,そのまま使用可能であることが明らかとなった。
Masahiro TOYODA   +2 more
openaire   +2 more sources

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger   +2 more
wiley   +1 more source

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

open access: yesAdvanced Engineering Materials, EarlyView.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source

Evaluation of Different CH4-CO2 Replacement Processes in Hydrate-Bearing Sediments by Measuring P-Wave Velocity

open access: yesEnergies, 2013
The replacement of methane with carbon dioxide in natural gas hydrate-bearing sediments is considered a promising technology for simultaneously recovering natural gas and entrapping CO2.
Bei Liu   +5 more
doaj   +1 more source

Rational Fine‐Tuning of MOF Pore Metrics: Enhanced SO2 Capture and Sensing with Optimal Multi‐Site Interactions

open access: yesAdvanced Functional Materials, EarlyView.
A pore tuning strategy to amplify the multi‐site MOF‐SO2 interactions is proposed to achieve an enhanced trace SO2 capture and chemiresistive sensing in highly stable isostructural DMOFs by annelating benzene rings. This work provides a facile strategy to achieve tailor‐made stable MOF materials for specific multifunctional applications.
Shanghua Xing   +9 more
wiley   +1 more source

Low-concentration and multi-component NMHCs capture from oil field exhaust using porous ZIF-8/iso-hexadecane slurry

open access: yesGreen Chemical Engineering
Non-methane hydrocarbons (NMHCs) are a common type of volatile organic compounds (VOCs) pollutant in the petrochemical industry and have attracted widespread attention because of their adverse health effects and environmental impacts.
Kun Li   +7 more
doaj   +1 more source

Embedding oxophilic rare-earth single atom in platinum nanoclusters for efficient hydrogen electro-oxidation

open access: yesNature Communications, 2023
Designing Pt-based electrocatalysts with high catalytic activity and CO tolerance is challenging but extremely desirable for alkaline hydrogen oxidation reaction.
Xiaoning Wang   +11 more
doaj   +1 more source

Evidence of traffic-related pollutant control in soil-based Sustainable Urban Drainage Systems (SUDS) [PDF]

open access: yes, 2009
SUDS are being increasingly employed to control highway runoff and have the potential to protect groundwater and surface water quality by minimising the risks of both point and diffuse sources of pollution.
Arcy, B. J. D.   +5 more
core   +4 more sources

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