Hydrogen Storage in Carbon Nanotubes: Residual Metal Content and Pretreatment Temperature
Hydrogen storage in MWNT was enhanced via the catalytic activity of NiMgO. The magnitude of the hydrogen to metal ratio for the MWNT/NiMgO system, combined with temperature programmed adsorption and desorption studies, showed hydrogen spillover from the catalyst to the carbon surface. Metal doping combined with temperature activation studies showed that both nickel and magnesium are active in the catalytic process. The yield, quality, and carbon-metal contact were shown to affect hydrogen uptake. Higher pretreatment temperatures enhanced uptake, for both low- and high-pressure measurements, due to increased carbon-metal contact and activation of the catalyst. At 69 bar (or 1,000 psia), the hydrogen adsorption and desorption of the MWNT/NiMgO system were 3.7% and 3.6%, respectively.
A. D. Lueking and R. T. Yang, "Hydrogen Storage in Carbon Nanotubes: Residual Metal Content and Pretreatment Temperature," AIChE Journal, vol. 49, no. 6, pp. 1556-1568, John Wiley & Sons, Jun 2003.
The definitive version is available at https://doi.org/10.1002/aic.690490619
Chemical and Biochemical Engineering
National Science Foundation (U.S.)
Keywords and Phrases
Adsorption; Catalyst activity; Desorption; Hydrogen; Pressure measurement; Metal ratio; Carbon nanotubes; Carbon; Hydrogen; Magnesium; Magnesium oxide; Metal; Nickel; Oxygen; Article; Catalysis; Catalyst; Chemical analysis; Chemical composition; Chemical interaction; Desorption; Dissociation; Measurement; Nanotechnology; Pressure; Proton transport; Quality control; Surface property; Synthesis; Temperature dependence
International Standard Serial Number (ISSN)
Article - Journal
© 2003 John Wiley & Sons, All rights reserved.