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A simple process for selective removal of carbon from single-walled carbon nanotube samples was developed based on a mild oxidation by carbon dioxide. The reactivity profiles of as prepared and purified nanotube samples were determined using both TG and a related analytical technique, controlled atmosphere programmed temperature oxidation (CAPTO). The complex differential rate curves for weight loss...
A portion of the hydrogen of a high-surface-area silica was exchanged with deuterium gas in a pulse flow microreactor. The exchange reaction was rapid at 190°C when the silica was physically mixed with a Pd on carbon catalyst. The amount of readily exchangeable hydrogen was determined using a titration technique to be 0.87 mmol H/g silica, more than 50% of the estimated number of hydroxyl groups....
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