Results 11 to 20 of about 4,127 (270)

Solution Combustion Synthesis of Ni/Al2O3 Catalyst for Methane Decomposition: Effect of Fuel

open access: yesApplied Sciences, 2023
The synthesis of a 90% Ni/Al2O3 catalyst via solution combustion synthesis with various fuels was studied in this work. Catalysts with a high content of the active component (i.e., nickel) were obtained as a result of the combustion of Ni(NO3)2·6H2O and ...
Pavel B. Kurmashov   +5 more
doaj   +1 more source

Stacked-cup multiwall carbon nanotubes as components of energy-intensive suspension jet fuels

open access: yesТонкие химические технологии, 2020
Objectives. The addition of high-density carbon materials to jet fuels can lead to a significant increase in the volumetric energy of the fuel combustion.
L. S. Karpushenkava   +2 more
doaj   +1 more source

Modelagem da adsorção de compostos orgânicos voláteis sobre nanotubos de carbono cup-stacked usando o modelo da força motriz linear - doi: 10.4025/actascitechnol.v32i2.4817

open access: yesActa Scientiarum: Technology, 2010
Os compostos orgânicos voláteis (COV) são importante classe de poluentes do ar, e a adsorção tem sido largamente empregada no seu tratamento há vários anos.
Waldir Nagel Schirmer   +3 more
doaj   +1 more source

Multiscale hybrid micro-nanocomposites based on carbon nanotubes and carbon fibers [PDF]

open access: yes, 2010
Amino-modified double wall carbon nanotube (DWCNT-NH2)/carbon fiber (CF)/epoxy hybrid micro-nanocomposite laminates were prepared by a resin infusion technique.
Inam, Fawad   +3 more
core   +3 more sources

Computational study of boron nitride nanotube synthesis: how catalyst morphology stabilizes the boron nitride bond [PDF]

open access: yes, 2009
In an attempt to understand why catalytic methods for the growth of boron nitride nanotubes work much worse than for their carbon counterparts, we use first-principles calculations to study the energetics of elemental reactions forming N2, B2 and BN ...
A. S. Foster   +4 more
core   +3 more sources

Direct measurement of bending stiffness and estimation of Young's modulus of vertically aligned carbon nanofibers [PDF]

open access: yes, 2013
The bending stiffness of individual, as-grown, vertically aligned carbon nanofibers was measured using a custom-built atomic force microscope placed inside a scanning electron microscope.
Alavian Ghavanini, Farzan   +4 more
core   +1 more source

Effect of carbon substrate materials as a Pt–Ru catalyst support on the performance of direct methanol fuel cells [PDF]

open access: yes, 2008
The support effect of carbon nanotubes (CNTs) for direct methanol fuel cell (DMFC) was studied using CNTs with and without defect preparation, carbon black, and fishbone-type CNTs.
Kizuka Tokushi   +5 more
core   +1 more source

Superstable Ultrathin Water Film Confined in a Hydrophilized Carbon Nanotube [PDF]

open access: yes, 2018
Fluids confined in a nanoscale space behave differently than in the bulk due to strong interactions between fluid molecules and solid atoms. Here, we observed water confined inside "open" hydrophilized carbon nanotubes (CNT), with diameter of tens of ...
Askounis, Alexandros   +5 more
core   +3 more sources

CUP STACKING GAMES: THE CONTRIBUTION IN IMPROVING STUDENTS SPEAKING ABILITY

open access: yesJLE: Journal of Literate of English Education Study Program, 2022
Cup stacking games allows the equal opportunities to each student to speak up during the classroom. Thus, the present study is to improve the students' speaking ability in by utilizing Cup stacking games.  This study applied classroom action research which was conducted in four stages; planning, action, observation, and reflection.
St. Hartina, null Rabiah, null Masruddin
openaire   +1 more source

Palladium nanoparticles on carbon nanotubes as catalysts of cross-coupling reactions [PDF]

open access: yes, 2013
The macroscopic properties of composite nanotube-nanoparticle superstructures are determined by a complex interplay of structural parameters at the nanoscale.
Akbayrak   +42 more
core   +2 more sources

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