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• W2021844140 startingPage "5639" @default.
• W2021844140 abstract "Palladium nanoparticles are deposited onto zeolite template carbon (ZTC) via supercritical CO2 (scCO2) mediated hydrogenation of a CO2-phillic transition metal precursor. The supercritical fluid (SCF) mediated metal incorporation approach enabled the decoration of ZTC with 0.2–2.0 wt % of well-dispersed Pd nanoparticles of size 2–5 nm. The resulting Pd-doped ZTCs exhibit enhanced hydrogen uptake and storage density. The ZTC (with surface area of 2046 m2/g) had a hydrogen storage capacity (at 77 K and 20 bar) of 4.9 wt %, while the Pd-ZTCs had uptake of 4.7–5.3 wt % despite a surface area in the range 1390–1858 m2/g. The Pd-ZTCs thus exhibit enhanced hydrogen storage density (14.3–18.3 μmol H2/m2), which is much higher than that of Pd-free ZTC (12.0 μmol H2/m2). The hydrogen isosteric heat of adsorption (Qst) was found to be higher for the Pd-doped carbons (6.7 kJ/mol) compared to the parent ZTC (5.3 kJ/mol). The deposition of small amounts of Pd (up to 2 wt %) along with well-dispersed Pd nanoparticles of size of 2–5 nm is essential for the enhancement of hydrogen uptake and illustrates the importance of optimizing the balance between metal loading/particle size and surface area to achieve the best metal/porous carbon composite for enhanced hydrogen uptake." @default.
• W2021844140 created "2016-06-24" @default.
• W2021844140 creator A5007033958 @default.
• W2021844140 creator A5011631243 @default.
• W2021844140 creator A5062671677 @default.
• W2021844140 creator A5072140754 @default.
• W2021844140 date "2013-06-11" @default.
• W2021844140 modified "2023-09-26" @default.
• W2021844140 title "Supercritical CO₂ Mediated Incorporation of Pd onto Templated Carbons: A Route to Optimizing the Pd Particle Size and Hydrogen Uptake Density" @default.
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• W2021844140 doi "https://doi.org/10.1021/am401622w" @default.
• W2021844140 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23719485" @default.
• W2021844140 hasPublicationYear "2013" @default.
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